./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d7b83251f9a608d2befdac3ab06beaba9889f30d8ab1cb865fc88ebdabcb52dd --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:33:26,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:33:26,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:33:26,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:33:26,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:33:26,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:33:26,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:33:26,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:33:26,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:33:26,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:33:26,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:33:26,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:33:26,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:33:26,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:33:26,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:33:26,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:33:26,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:33:26,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:33:26,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:33:26,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:33:26,301 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:33:26,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:33:26,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:33:26,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:33:26,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:33:26,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:33:26,314 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:33:26,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:33:26,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:33:26,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:33:26,317 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:33:26,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:33:26,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:33:26,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:33:26,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:33:26,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:33:26,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:33:26,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:33:26,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:33:26,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:33:26,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:33:26,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:33:26,327 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 20:33:26,351 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:33:26,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:33:26,352 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:33:26,352 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:33:26,353 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:33:26,353 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:33:26,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:33:26,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:33:26,354 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:33:26,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:33:26,355 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:33:26,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 20:33:26,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:33:26,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:33:26,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:33:26,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:33:26,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:33:26,357 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:33:26,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:33:26,357 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:33:26,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:33:26,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:33:26,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:33:26,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:33:26,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:33:26,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:33:26,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:33:26,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:33:26,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 20:33:26,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 20:33:26,359 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:33:26,360 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:33:26,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:33:26,360 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b83251f9a608d2befdac3ab06beaba9889f30d8ab1cb865fc88ebdabcb52dd [2022-07-19 20:33:26,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:33:26,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:33:26,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:33:26,609 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:33:26,610 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:33:26,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2022-07-19 20:33:26,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96652ae33/f2db46644fdd4942a85b0a610ca5eb64/FLAGac35ce66c [2022-07-19 20:33:27,119 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:33:27,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2022-07-19 20:33:27,139 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96652ae33/f2db46644fdd4942a85b0a610ca5eb64/FLAGac35ce66c [2022-07-19 20:33:27,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96652ae33/f2db46644fdd4942a85b0a610ca5eb64 [2022-07-19 20:33:27,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:33:27,458 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:33:27,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:33:27,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:33:27,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:33:27,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:33:27" (1/1) ... [2022-07-19 20:33:27,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4da9b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:33:27, skipping insertion in model container [2022-07-19 20:33:27,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:33:27" (1/1) ... [2022-07-19 20:33:27,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:33:27,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:33:27,659 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.07.cil-2.c[914,927] [2022-07-19 20:33:27,699 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.07.cil-2.c[7115,7128] [2022-07-19 20:33:27,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:33:27,783 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:33:27,792 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.07.cil-2.c[914,927] [2022-07-19 20:33:27,806 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.07.cil-2.c[7115,7128] [2022-07-19 20:33:27,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:33:27,854 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:33:27,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:33:27 WrapperNode [2022-07-19 20:33:27,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:33:27,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:33:27,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:33:27,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:33:27,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:33:27" (1/1) ... [2022-07-19 20:33:27,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:33:27" (1/1) ... [2022-07-19 20:33:27,916 INFO L137 Inliner]: procedures = 67, calls = 79, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 755 [2022-07-19 20:33:27,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:33:27,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:33:27,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:33:27,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:33:27,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:33:27" (1/1) ... [2022-07-19 20:33:27,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:33:27" (1/1) ... [2022-07-19 20:33:27,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:33:27" (1/1) ... [2022-07-19 20:33:27,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:33:27" (1/1) ... [2022-07-19 20:33:27,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:33:27" (1/1) ... [2022-07-19 20:33:27,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:33:27" (1/1) ... [2022-07-19 20:33:27,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:33:27" (1/1) ... [2022-07-19 20:33:27,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:33:27,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:33:27,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:33:27,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:33:27,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:33:27" (1/1) ... [2022-07-19 20:33:27,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:33:27,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:33:27,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 20:33:28,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 20:33:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:33:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 20:33:28,030 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 20:33:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-19 20:33:28,032 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-19 20:33:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-19 20:33:28,032 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-19 20:33:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-19 20:33:28,033 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-19 20:33:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-19 20:33:28,033 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-19 20:33:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-19 20:33:28,034 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-19 20:33:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-19 20:33:28,035 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-19 20:33:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-19 20:33:28,035 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-19 20:33:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-19 20:33:28,035 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-19 20:33:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-19 20:33:28,035 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-19 20:33:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-19 20:33:28,036 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-19 20:33:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 20:33:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-19 20:33:28,037 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-19 20:33:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-19 20:33:28,037 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-19 20:33:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:33:28,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:33:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-19 20:33:28,038 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-19 20:33:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-19 20:33:28,038 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-19 20:33:28,134 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:33:28,135 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:33:28,857 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:33:28,870 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:33:28,870 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-07-19 20:33:28,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:33:28 BoogieIcfgContainer [2022-07-19 20:33:28,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:33:28,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:33:28,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:33:28,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:33:28,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:33:27" (1/3) ... [2022-07-19 20:33:28,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d09d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:33:28, skipping insertion in model container [2022-07-19 20:33:28,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:33:27" (2/3) ... [2022-07-19 20:33:28,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d09d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:33:28, skipping insertion in model container [2022-07-19 20:33:28,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:33:28" (3/3) ... [2022-07-19 20:33:28,886 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2022-07-19 20:33:28,903 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:33:28,903 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:33:28,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:33:28,962 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@25cbadb4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2f8d7b82 [2022-07-19 20:33:28,962 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:33:28,967 INFO L276 IsEmpty]: Start isEmpty. Operand has 366 states, 311 states have (on average 1.6205787781350482) internal successors, (504), 319 states have internal predecessors, (504), 37 states have call successors, (37), 15 states have call predecessors, (37), 15 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-19 20:33:28,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:33:28,977 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:28,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:33:28,979 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:28,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:28,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1360309696, now seen corresponding path program 1 times [2022-07-19 20:33:28,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:28,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344456849] [2022-07-19 20:33:28,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:28,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:29,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:29,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:33:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:29,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:33:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:29,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:33:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:29,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:33:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:29,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:33:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:29,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:33:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:29,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:29,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:29,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344456849] [2022-07-19 20:33:29,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344456849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:29,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:29,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:33:29,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142509511] [2022-07-19 20:33:29,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:29,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:33:29,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:29,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:33:29,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:33:29,341 INFO L87 Difference]: Start difference. First operand has 366 states, 311 states have (on average 1.6205787781350482) internal successors, (504), 319 states have internal predecessors, (504), 37 states have call successors, (37), 15 states have call predecessors, (37), 15 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:33:30,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:30,005 INFO L93 Difference]: Finished difference Result 727 states and 1147 transitions. [2022-07-19 20:33:30,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 20:33:30,007 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:33:30,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:30,018 INFO L225 Difference]: With dead ends: 727 [2022-07-19 20:33:30,019 INFO L226 Difference]: Without dead ends: 373 [2022-07-19 20:33:30,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:33:30,026 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 549 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:30,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 1489 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 20:33:30,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-07-19 20:33:30,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 355. [2022-07-19 20:33:30,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 303 states have (on average 1.528052805280528) internal successors, (463), 308 states have internal predecessors, (463), 37 states have call successors, (37), 15 states have call predecessors, (37), 13 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-19 20:33:30,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 533 transitions. [2022-07-19 20:33:30,092 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 533 transitions. Word has length 65 [2022-07-19 20:33:30,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:30,092 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 533 transitions. [2022-07-19 20:33:30,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:33:30,093 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 533 transitions. [2022-07-19 20:33:30,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:33:30,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:30,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:33:30,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 20:33:30,097 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:30,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:30,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1400984446, now seen corresponding path program 1 times [2022-07-19 20:33:30,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:30,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844853432] [2022-07-19 20:33:30,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:30,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:30,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:30,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:33:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:30,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:33:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:30,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:33:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:30,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:33:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:30,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:33:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:30,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:33:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:30,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:30,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:30,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844853432] [2022-07-19 20:33:30,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844853432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:30,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:30,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:33:30,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060201446] [2022-07-19 20:33:30,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:30,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:33:30,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:30,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:33:30,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:33:30,288 INFO L87 Difference]: Start difference. First operand 355 states and 533 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:33:31,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:31,096 INFO L93 Difference]: Finished difference Result 578 states and 847 transitions. [2022-07-19 20:33:31,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:33:31,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:33:31,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:31,108 INFO L225 Difference]: With dead ends: 578 [2022-07-19 20:33:31,108 INFO L226 Difference]: Without dead ends: 490 [2022-07-19 20:33:31,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:33:31,111 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 899 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:31,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1528 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:33:31,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-07-19 20:33:31,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 451. [2022-07-19 20:33:31,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 379 states have (on average 1.4960422163588392) internal successors, (567), 386 states have internal predecessors, (567), 48 states have call successors, (48), 22 states have call predecessors, (48), 22 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-07-19 20:33:31,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 664 transitions. [2022-07-19 20:33:31,186 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 664 transitions. Word has length 65 [2022-07-19 20:33:31,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:31,187 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 664 transitions. [2022-07-19 20:33:31,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:33:31,187 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 664 transitions. [2022-07-19 20:33:31,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:33:31,198 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:31,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:33:31,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 20:33:31,199 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:31,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:31,200 INFO L85 PathProgramCache]: Analyzing trace with hash -997198495, now seen corresponding path program 1 times [2022-07-19 20:33:31,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:31,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57493437] [2022-07-19 20:33:31,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:31,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:31,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:31,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:33:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:31,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:33:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:31,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:33:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:31,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:33:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:31,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:33:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:31,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:33:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:31,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:31,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:31,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57493437] [2022-07-19 20:33:31,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57493437] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:31,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:31,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:33:31,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449273200] [2022-07-19 20:33:31,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:31,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:33:31,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:31,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:33:31,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:33:31,327 INFO L87 Difference]: Start difference. First operand 451 states and 664 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:33:32,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:32,269 INFO L93 Difference]: Finished difference Result 798 states and 1140 transitions. [2022-07-19 20:33:32,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 20:33:32,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:33:32,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:32,274 INFO L225 Difference]: With dead ends: 798 [2022-07-19 20:33:32,274 INFO L226 Difference]: Without dead ends: 621 [2022-07-19 20:33:32,275 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 [2022-07-19 20:33:32,276 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 1091 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:32,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 2058 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 20:33:32,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-07-19 20:33:32,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 547. [2022-07-19 20:33:32,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 455 states have (on average 1.4725274725274726) internal successors, (670), 464 states have internal predecessors, (670), 59 states have call successors, (59), 29 states have call predecessors, (59), 31 states have return successors, (68), 57 states have call predecessors, (68), 55 states have call successors, (68) [2022-07-19 20:33:32,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 797 transitions. [2022-07-19 20:33:32,309 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 797 transitions. Word has length 65 [2022-07-19 20:33:32,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:32,309 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 797 transitions. [2022-07-19 20:33:32,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:33:32,310 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 797 transitions. [2022-07-19 20:33:32,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:33:32,311 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:32,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:33:32,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 20:33:32,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:32,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:32,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1269182691, now seen corresponding path program 1 times [2022-07-19 20:33:32,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:32,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153067592] [2022-07-19 20:33:32,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:32,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:32,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:32,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:33:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:32,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:33:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:32,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:33:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:32,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:33:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:32,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:33:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:32,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:33:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:32,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:32,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:32,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153067592] [2022-07-19 20:33:32,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153067592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:32,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:32,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:33:32,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275813302] [2022-07-19 20:33:32,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:32,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:33:32,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:32,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:33:32,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:33:32,423 INFO L87 Difference]: Start difference. First operand 547 states and 797 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) [2022-07-19 20:33:33,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:33,212 INFO L93 Difference]: Finished difference Result 874 states and 1251 transitions. [2022-07-19 20:33:33,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 20:33:33,213 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 [2022-07-19 20:33:33,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:33,216 INFO L225 Difference]: With dead ends: 874 [2022-07-19 20:33:33,217 INFO L226 Difference]: Without dead ends: 607 [2022-07-19 20:33:33,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:33:33,219 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 669 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:33,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 2103 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:33:33,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-07-19 20:33:33,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 562. [2022-07-19 20:33:33,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 467 states have (on average 1.4603854389721627) internal successors, (682), 476 states have internal predecessors, (682), 59 states have call successors, (59), 29 states have call predecessors, (59), 34 states have return successors, (71), 60 states have call predecessors, (71), 55 states have call successors, (71) [2022-07-19 20:33:33,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 812 transitions. [2022-07-19 20:33:33,258 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 812 transitions. Word has length 65 [2022-07-19 20:33:33,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:33,258 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 812 transitions. [2022-07-19 20:33:33,259 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) [2022-07-19 20:33:33,259 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 812 transitions. [2022-07-19 20:33:33,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:33:33,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:33,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:33:33,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 20:33:33,261 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:33,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:33,262 INFO L85 PathProgramCache]: Analyzing trace with hash -117020703, now seen corresponding path program 1 times [2022-07-19 20:33:33,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:33,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277597075] [2022-07-19 20:33:33,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:33,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:33,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:33,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:33:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:33,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:33:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:33,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:33:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:33,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:33:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:33,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:33:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:33,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:33:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:33,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:33,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:33,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277597075] [2022-07-19 20:33:33,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277597075] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:33,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:33,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:33:33,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359566375] [2022-07-19 20:33:33,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:33,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:33:33,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:33,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:33:33,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:33:33,369 INFO L87 Difference]: Start difference. First operand 562 states and 812 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) [2022-07-19 20:33:34,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:34,156 INFO L93 Difference]: Finished difference Result 880 states and 1244 transitions. [2022-07-19 20:33:34,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:33:34,157 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 [2022-07-19 20:33:34,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:34,160 INFO L225 Difference]: With dead ends: 880 [2022-07-19 20:33:34,160 INFO L226 Difference]: Without dead ends: 598 [2022-07-19 20:33:34,161 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 [2022-07-19 20:33:34,162 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 671 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:34,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 2101 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:33:34,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-07-19 20:33:34,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 567. [2022-07-19 20:33:34,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 471 states have (on average 1.4522292993630572) internal successors, (684), 480 states have internal predecessors, (684), 59 states have call successors, (59), 29 states have call predecessors, (59), 35 states have return successors, (72), 61 states have call predecessors, (72), 55 states have call successors, (72) [2022-07-19 20:33:34,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 815 transitions. [2022-07-19 20:33:34,186 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 815 transitions. Word has length 65 [2022-07-19 20:33:34,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:34,186 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 815 transitions. [2022-07-19 20:33:34,186 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) [2022-07-19 20:33:34,187 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 815 transitions. [2022-07-19 20:33:34,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:33:34,188 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:34,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:33:34,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 20:33:34,189 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:34,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:34,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1146380001, now seen corresponding path program 1 times [2022-07-19 20:33:34,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:34,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249876915] [2022-07-19 20:33:34,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:34,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:34,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:34,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:33:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:34,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:33:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:34,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:33:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:34,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:33:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:34,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:33:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:34,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:33:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:34,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:34,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:34,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249876915] [2022-07-19 20:33:34,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249876915] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:34,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:34,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 20:33:34,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374388383] [2022-07-19 20:33:34,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:34,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:33:34,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:34,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:33:34,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:33:34,275 INFO L87 Difference]: Start difference. First operand 567 states and 815 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) [2022-07-19 20:33:35,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:35,781 INFO L93 Difference]: Finished difference Result 1923 states and 2656 transitions. [2022-07-19 20:33:35,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-19 20:33:35,782 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 [2022-07-19 20:33:35,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:35,789 INFO L225 Difference]: With dead ends: 1923 [2022-07-19 20:33:35,789 INFO L226 Difference]: Without dead ends: 1618 [2022-07-19 20:33:35,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-19 20:33:35,795 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 3092 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 675 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3107 SdHoareTripleChecker+Valid, 2039 SdHoareTripleChecker+Invalid, 2103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 675 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:35,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3107 Valid, 2039 Invalid, 2103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [675 Valid, 1428 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 20:33:35,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2022-07-19 20:33:35,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1483. [2022-07-19 20:33:35,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1483 states, 1198 states have (on average 1.3664440734557597) internal successors, (1637), 1222 states have internal predecessors, (1637), 147 states have call successors, (147), 112 states have call predecessors, (147), 136 states have return successors, (189), 151 states have call predecessors, (189), 143 states have call successors, (189) [2022-07-19 20:33:35,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 1973 transitions. [2022-07-19 20:33:35,883 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 1973 transitions. Word has length 65 [2022-07-19 20:33:35,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:35,884 INFO L495 AbstractCegarLoop]: Abstraction has 1483 states and 1973 transitions. [2022-07-19 20:33:35,884 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) [2022-07-19 20:33:35,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 1973 transitions. [2022-07-19 20:33:35,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:33:35,885 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:35,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:33:35,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 20:33:35,886 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:35,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:35,887 INFO L85 PathProgramCache]: Analyzing trace with hash -166967177, now seen corresponding path program 1 times [2022-07-19 20:33:35,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:35,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155328762] [2022-07-19 20:33:35,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:35,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:35,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:35,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:33:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:35,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:33:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:35,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:33:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:35,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:33:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:35,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:33:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:35,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:33:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:35,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:35,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:35,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155328762] [2022-07-19 20:33:35,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155328762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:35,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:35,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:33:35,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684644356] [2022-07-19 20:33:35,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:35,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:33:35,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:35,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:33:35,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:33:35,992 INFO L87 Difference]: Start difference. First operand 1483 states and 1973 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:33:36,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:36,871 INFO L93 Difference]: Finished difference Result 2762 states and 3559 transitions. [2022-07-19 20:33:36,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 20:33:36,872 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:33:36,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:36,879 INFO L225 Difference]: With dead ends: 2762 [2022-07-19 20:33:36,879 INFO L226 Difference]: Without dead ends: 1770 [2022-07-19 20:33:36,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-07-19 20:33:36,882 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 1043 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1067 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:36,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1067 Valid, 1808 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:33:36,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2022-07-19 20:33:36,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1425. [2022-07-19 20:33:36,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1156 states have (on average 1.3624567474048443) internal successors, (1575), 1175 states have internal predecessors, (1575), 141 states have call successors, (141), 107 states have call predecessors, (141), 126 states have return successors, (174), 144 states have call predecessors, (174), 137 states have call successors, (174) [2022-07-19 20:33:36,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 1890 transitions. [2022-07-19 20:33:36,955 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 1890 transitions. Word has length 65 [2022-07-19 20:33:36,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:36,956 INFO L495 AbstractCegarLoop]: Abstraction has 1425 states and 1890 transitions. [2022-07-19 20:33:36,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:33:36,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 1890 transitions. [2022-07-19 20:33:36,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:33:36,957 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:36,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:33:36,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 20:33:36,958 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:36,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:36,958 INFO L85 PathProgramCache]: Analyzing trace with hash -300980683, now seen corresponding path program 1 times [2022-07-19 20:33:36,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:36,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476003795] [2022-07-19 20:33:36,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:36,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:36,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:36,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:33:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:37,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:33:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:37,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:33:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:37,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:33:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:37,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:33:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:37,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:33:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:37,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:37,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:37,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476003795] [2022-07-19 20:33:37,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476003795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:37,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:37,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:33:37,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561354557] [2022-07-19 20:33:37,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:37,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:33:37,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:37,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:33:37,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:33:37,032 INFO L87 Difference]: Start difference. First operand 1425 states and 1890 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) [2022-07-19 20:33:37,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:37,461 INFO L93 Difference]: Finished difference Result 3787 states and 4887 transitions. [2022-07-19 20:33:37,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 20:33:37,462 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 [2022-07-19 20:33:37,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:37,475 INFO L225 Difference]: With dead ends: 3787 [2022-07-19 20:33:37,475 INFO L226 Difference]: Without dead ends: 2631 [2022-07-19 20:33:37,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-19 20:33:37,478 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 1530 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:37,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 1028 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:33:37,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2631 states. [2022-07-19 20:33:37,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2631 to 2483. [2022-07-19 20:33:37,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 1974 states have (on average 1.3034447821681865) internal successors, (2573), 2009 states have internal predecessors, (2573), 257 states have call successors, (257), 206 states have call predecessors, (257), 250 states have return successors, (362), 269 states have call predecessors, (362), 253 states have call successors, (362) [2022-07-19 20:33:37,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 3192 transitions. [2022-07-19 20:33:37,623 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 3192 transitions. Word has length 65 [2022-07-19 20:33:37,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:37,623 INFO L495 AbstractCegarLoop]: Abstraction has 2483 states and 3192 transitions. [2022-07-19 20:33:37,623 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) [2022-07-19 20:33:37,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 3192 transitions. [2022-07-19 20:33:37,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:33:37,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:37,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:33:37,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 20:33:37,625 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:37,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:37,625 INFO L85 PathProgramCache]: Analyzing trace with hash -57595364, now seen corresponding path program 1 times [2022-07-19 20:33:37,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:37,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264417721] [2022-07-19 20:33:37,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:37,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:37,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:37,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:33:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:37,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:33:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:37,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:33:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:37,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:33:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:37,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:33:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:37,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:33:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:37,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:37,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:37,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264417721] [2022-07-19 20:33:37,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264417721] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:37,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:37,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:33:37,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139735703] [2022-07-19 20:33:37,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:37,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:33:37,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:37,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:33:37,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:33:37,696 INFO L87 Difference]: Start difference. First operand 2483 states and 3192 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) [2022-07-19 20:33:38,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:38,210 INFO L93 Difference]: Finished difference Result 5763 states and 7313 transitions. [2022-07-19 20:33:38,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:33:38,210 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 [2022-07-19 20:33:38,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:38,228 INFO L225 Difference]: With dead ends: 5763 [2022-07-19 20:33:38,229 INFO L226 Difference]: Without dead ends: 3549 [2022-07-19 20:33:38,234 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 [2022-07-19 20:33:38,235 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 877 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:38,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 1256 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 20:33:38,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3549 states. [2022-07-19 20:33:38,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3549 to 3253. [2022-07-19 20:33:38,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3253 states, 2573 states have (on average 1.2883793237465992) internal successors, (3315), 2613 states have internal predecessors, (3315), 341 states have call successors, (341), 279 states have call predecessors, (341), 337 states have return successors, (466), 362 states have call predecessors, (466), 337 states have call successors, (466) [2022-07-19 20:33:38,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3253 states to 3253 states and 4122 transitions. [2022-07-19 20:33:38,398 INFO L78 Accepts]: Start accepts. Automaton has 3253 states and 4122 transitions. Word has length 66 [2022-07-19 20:33:38,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:38,398 INFO L495 AbstractCegarLoop]: Abstraction has 3253 states and 4122 transitions. [2022-07-19 20:33:38,399 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) [2022-07-19 20:33:38,399 INFO L276 IsEmpty]: Start isEmpty. Operand 3253 states and 4122 transitions. [2022-07-19 20:33:38,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 20:33:38,400 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:38,400 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] [2022-07-19 20:33:38,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 20:33:38,400 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:38,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:38,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1644831941, now seen corresponding path program 1 times [2022-07-19 20:33:38,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:38,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442193447] [2022-07-19 20:33:38,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:38,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:38,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:38,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:33:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:38,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:33:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:38,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:33:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:38,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:33:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:38,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:33:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:38,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:33:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:38,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:38,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:38,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442193447] [2022-07-19 20:33:38,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442193447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:38,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:38,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:33:38,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757993775] [2022-07-19 20:33:38,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:38,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:33:38,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:38,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:33:38,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:33:38,469 INFO L87 Difference]: Start difference. First operand 3253 states and 4122 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) [2022-07-19 20:33:38,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:38,885 INFO L93 Difference]: Finished difference Result 6797 states and 8495 transitions. [2022-07-19 20:33:38,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:33:38,886 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 [2022-07-19 20:33:38,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:38,901 INFO L225 Difference]: With dead ends: 6797 [2022-07-19 20:33:38,902 INFO L226 Difference]: Without dead ends: 3812 [2022-07-19 20:33:38,908 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 [2022-07-19 20:33:38,909 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 1223 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:38,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 1087 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 20:33:38,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3812 states. [2022-07-19 20:33:39,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3812 to 3531. [2022-07-19 20:33:39,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3531 states, 2794 states have (on average 1.280959198282033) internal successors, (3579), 2836 states have internal predecessors, (3579), 369 states have call successors, (369), 304 states have call predecessors, (369), 366 states have return successors, (498), 392 states have call predecessors, (498), 365 states have call successors, (498) [2022-07-19 20:33:39,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3531 states to 3531 states and 4446 transitions. [2022-07-19 20:33:39,070 INFO L78 Accepts]: Start accepts. Automaton has 3531 states and 4446 transitions. Word has length 72 [2022-07-19 20:33:39,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:39,072 INFO L495 AbstractCegarLoop]: Abstraction has 3531 states and 4446 transitions. [2022-07-19 20:33:39,072 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) [2022-07-19 20:33:39,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3531 states and 4446 transitions. [2022-07-19 20:33:39,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-19 20:33:39,073 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:39,073 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] [2022-07-19 20:33:39,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 20:33:39,074 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:39,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:39,074 INFO L85 PathProgramCache]: Analyzing trace with hash 33226707, now seen corresponding path program 1 times [2022-07-19 20:33:39,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:39,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208914130] [2022-07-19 20:33:39,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:39,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:39,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:39,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:33:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:39,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:33:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:39,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:33:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:39,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:33:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:39,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:33:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:39,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:33:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:39,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:39,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:39,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208914130] [2022-07-19 20:33:39,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208914130] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:39,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:39,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:33:39,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324461866] [2022-07-19 20:33:39,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:39,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:33:39,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:39,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:33:39,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:33:39,159 INFO L87 Difference]: Start difference. First operand 3531 states and 4446 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) [2022-07-19 20:33:39,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:39,661 INFO L93 Difference]: Finished difference Result 4630 states and 5757 transitions. [2022-07-19 20:33:39,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:33:39,662 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 [2022-07-19 20:33:39,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:39,680 INFO L225 Difference]: With dead ends: 4630 [2022-07-19 20:33:39,681 INFO L226 Difference]: Without dead ends: 4627 [2022-07-19 20:33:39,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-07-19 20:33:39,683 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 1731 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1741 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:39,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1741 Valid, 1067 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:33:39,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-07-19 20:33:39,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 3993. [2022-07-19 20:33:39,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3993 states, 3149 states have (on average 1.2696093998094633) internal successors, (3998), 3194 states have internal predecessors, (3998), 419 states have call successors, (419), 348 states have call predecessors, (419), 423 states have return successors, (575), 452 states have call predecessors, (575), 416 states have call successors, (575) [2022-07-19 20:33:39,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3993 states to 3993 states and 4992 transitions. [2022-07-19 20:33:39,866 INFO L78 Accepts]: Start accepts. Automaton has 3993 states and 4992 transitions. Word has length 73 [2022-07-19 20:33:39,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:39,867 INFO L495 AbstractCegarLoop]: Abstraction has 3993 states and 4992 transitions. [2022-07-19 20:33:39,867 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) [2022-07-19 20:33:39,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3993 states and 4992 transitions. [2022-07-19 20:33:39,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 20:33:39,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:39,868 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] [2022-07-19 20:33:39,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 20:33:39,869 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:39,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:39,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1028933253, now seen corresponding path program 1 times [2022-07-19 20:33:39,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:39,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232875814] [2022-07-19 20:33:39,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:39,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:39,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:39,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:33:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:39,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:33:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:39,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:33:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:39,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:33:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:39,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:33:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:39,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:33:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:39,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:39,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:39,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232875814] [2022-07-19 20:33:39,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232875814] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:33:39,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404890471] [2022-07-19 20:33:39,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:39,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:33:39,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:33:40,001 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:33:40,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 20:33:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:40,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 20:33:40,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:33:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:40,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 20:33:40,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:40,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404890471] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 20:33:40,550 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 20:33:40,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-19 20:33:40,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212090996] [2022-07-19 20:33:40,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 20:33:40,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:33:40,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:40,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:33:40,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:33:40,552 INFO L87 Difference]: Start difference. First operand 3993 states and 4992 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) [2022-07-19 20:33:42,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:42,307 INFO L93 Difference]: Finished difference Result 8338 states and 10243 transitions. [2022-07-19 20:33:42,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-19 20:33:42,308 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 [2022-07-19 20:33:42,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:42,349 INFO L225 Difference]: With dead ends: 8338 [2022-07-19 20:33:42,349 INFO L226 Difference]: Without dead ends: 8335 [2022-07-19 20:33:42,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-07-19 20:33:42,354 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 1404 mSDsluCounter, 1880 mSDsCounter, 0 mSdLazyCounter, 1965 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 2570 SdHoareTripleChecker+Invalid, 2150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:42,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1463 Valid, 2570 Invalid, 2150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1965 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 20:33:42,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8335 states. [2022-07-19 20:33:42,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8335 to 7410. [2022-07-19 20:33:42,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7410 states, 5824 states have (on average 1.2520604395604396) internal successors, (7292), 5904 states have internal predecessors, (7292), 778 states have call successors, (778), 662 states have call predecessors, (778), 806 states have return successors, (1076), 845 states have call predecessors, (1076), 775 states have call successors, (1076) [2022-07-19 20:33:42,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7410 states to 7410 states and 9146 transitions. [2022-07-19 20:33:42,796 INFO L78 Accepts]: Start accepts. Automaton has 7410 states and 9146 transitions. Word has length 74 [2022-07-19 20:33:42,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:42,797 INFO L495 AbstractCegarLoop]: Abstraction has 7410 states and 9146 transitions. [2022-07-19 20:33:42,797 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) [2022-07-19 20:33:42,797 INFO L276 IsEmpty]: Start isEmpty. Operand 7410 states and 9146 transitions. [2022-07-19 20:33:42,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 20:33:42,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:42,799 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] [2022-07-19 20:33:42,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 20:33:43,019 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,SelfDestructingSolverStorable11 [2022-07-19 20:33:43,019 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:43,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:43,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1516349741, now seen corresponding path program 2 times [2022-07-19 20:33:43,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:43,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493543502] [2022-07-19 20:33:43,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:43,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:43,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:43,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:33:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:43,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:33:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:43,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:33:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:43,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:33:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:43,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:33:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:43,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:33:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:43,081 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:43,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:43,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493543502] [2022-07-19 20:33:43,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493543502] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:43,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:43,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:33:43,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646899808] [2022-07-19 20:33:43,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:43,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:33:43,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:43,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:33:43,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:33:43,084 INFO L87 Difference]: Start difference. First operand 7410 states and 9146 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) [2022-07-19 20:33:43,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:43,548 INFO L93 Difference]: Finished difference Result 10011 states and 12368 transitions. [2022-07-19 20:33:43,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 20:33:43,549 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 [2022-07-19 20:33:43,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:43,562 INFO L225 Difference]: With dead ends: 10011 [2022-07-19 20:33:43,562 INFO L226 Difference]: Without dead ends: 3837 [2022-07-19 20:33:43,575 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 [2022-07-19 20:33:43,576 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 928 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:43,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 1389 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:33:43,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3837 states. [2022-07-19 20:33:43,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3837 to 2844. [2022-07-19 20:33:43,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2844 states, 2262 states have (on average 1.259946949602122) internal successors, (2850), 2288 states have internal predecessors, (2850), 298 states have call successors, (298), 245 states have call predecessors, (298), 282 states have return successors, (377), 312 states have call predecessors, (377), 295 states have call successors, (377) [2022-07-19 20:33:43,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 3525 transitions. [2022-07-19 20:33:43,768 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 3525 transitions. Word has length 77 [2022-07-19 20:33:43,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:43,768 INFO L495 AbstractCegarLoop]: Abstraction has 2844 states and 3525 transitions. [2022-07-19 20:33:43,769 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) [2022-07-19 20:33:43,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 3525 transitions. [2022-07-19 20:33:43,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-19 20:33:43,771 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:43,772 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] [2022-07-19 20:33:43,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 20:33:43,772 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:43,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:43,773 INFO L85 PathProgramCache]: Analyzing trace with hash 522255415, now seen corresponding path program 1 times [2022-07-19 20:33:43,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:43,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284726589] [2022-07-19 20:33:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:43,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:43,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:43,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:33:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:43,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:33:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:43,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:33:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:43,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:33:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:43,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:33:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:43,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:33:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:43,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 20:33:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:43,848 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 20:33:43,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:43,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284726589] [2022-07-19 20:33:43,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284726589] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:43,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:43,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:33:43,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337406815] [2022-07-19 20:33:43,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:43,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:33:43,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:43,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:33:43,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:33:43,850 INFO L87 Difference]: Start difference. First operand 2844 states and 3525 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) [2022-07-19 20:33:44,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:44,877 INFO L93 Difference]: Finished difference Result 8040 states and 9826 transitions. [2022-07-19 20:33:44,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 20:33:44,877 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 [2022-07-19 20:33:44,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:44,902 INFO L225 Difference]: With dead ends: 8040 [2022-07-19 20:33:44,902 INFO L226 Difference]: Without dead ends: 5465 [2022-07-19 20:33:44,908 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 [2022-07-19 20:33:44,908 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 924 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 2154 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:44,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 2154 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:33:44,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5465 states. [2022-07-19 20:33:45,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5465 to 5158. [2022-07-19 20:33:45,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5158 states, 4010 states have (on average 1.2231920199501247) internal successors, (4905), 4110 states have internal predecessors, (4905), 565 states have call successors, (565), 473 states have call predecessors, (565), 581 states have return successors, (822), 577 states have call predecessors, (822), 562 states have call successors, (822) [2022-07-19 20:33:45,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5158 states to 5158 states and 6292 transitions. [2022-07-19 20:33:45,194 INFO L78 Accepts]: Start accepts. Automaton has 5158 states and 6292 transitions. Word has length 84 [2022-07-19 20:33:45,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:45,195 INFO L495 AbstractCegarLoop]: Abstraction has 5158 states and 6292 transitions. [2022-07-19 20:33:45,195 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) [2022-07-19 20:33:45,195 INFO L276 IsEmpty]: Start isEmpty. Operand 5158 states and 6292 transitions. [2022-07-19 20:33:45,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-19 20:33:45,198 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:45,198 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] [2022-07-19 20:33:45,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 20:33:45,199 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:45,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:45,199 INFO L85 PathProgramCache]: Analyzing trace with hash -315104239, now seen corresponding path program 1 times [2022-07-19 20:33:45,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:45,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822589972] [2022-07-19 20:33:45,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:45,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:45,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:45,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:33:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:45,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:33:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:45,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:33:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:45,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:33:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:45,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:33:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:45,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:33:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:45,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 20:33:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:45,266 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 20:33:45,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:45,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822589972] [2022-07-19 20:33:45,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822589972] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:45,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:45,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:33:45,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90756479] [2022-07-19 20:33:45,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:45,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:33:45,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:45,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:33:45,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:33:45,270 INFO L87 Difference]: Start difference. First operand 5158 states and 6292 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:33:46,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:46,419 INFO L93 Difference]: Finished difference Result 8060 states and 9812 transitions. [2022-07-19 20:33:46,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 20:33:46,420 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 [2022-07-19 20:33:46,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:46,431 INFO L225 Difference]: With dead ends: 8060 [2022-07-19 20:33:46,431 INFO L226 Difference]: Without dead ends: 3762 [2022-07-19 20:33:46,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-19 20:33:46,442 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 1869 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:46,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1903 Valid, 1637 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 20:33:46,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3762 states. [2022-07-19 20:33:46,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3762 to 3393. [2022-07-19 20:33:46,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3393 states, 2640 states have (on average 1.2166666666666666) internal successors, (3212), 2711 states have internal predecessors, (3212), 367 states have call successors, (367), 300 states have call predecessors, (367), 384 states have return successors, (507), 384 states have call predecessors, (507), 364 states have call successors, (507) [2022-07-19 20:33:46,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 4086 transitions. [2022-07-19 20:33:46,654 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 4086 transitions. Word has length 93 [2022-07-19 20:33:46,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:46,654 INFO L495 AbstractCegarLoop]: Abstraction has 3393 states and 4086 transitions. [2022-07-19 20:33:46,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:33:46,655 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 4086 transitions. [2022-07-19 20:33:46,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 20:33:46,657 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:46,658 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] [2022-07-19 20:33:46,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 20:33:46,658 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:46,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:46,658 INFO L85 PathProgramCache]: Analyzing trace with hash -909909463, now seen corresponding path program 1 times [2022-07-19 20:33:46,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:46,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923540743] [2022-07-19 20:33:46,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:46,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:46,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:46,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:33:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:46,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:33:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:46,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:33:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:46,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:33:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:46,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:46,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923540743] [2022-07-19 20:33:46,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923540743] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:46,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:46,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:33:46,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898308216] [2022-07-19 20:33:46,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:46,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:33:46,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:46,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:33:46,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:33:46,758 INFO L87 Difference]: Start difference. First operand 3393 states and 4086 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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) [2022-07-19 20:33:47,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:47,771 INFO L93 Difference]: Finished difference Result 3730 states and 4624 transitions. [2022-07-19 20:33:47,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:33:47,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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 124 [2022-07-19 20:33:47,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:47,780 INFO L225 Difference]: With dead ends: 3730 [2022-07-19 20:33:47,780 INFO L226 Difference]: Without dead ends: 3480 [2022-07-19 20:33:47,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:33:47,783 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 768 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:47,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1012 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:33:47,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2022-07-19 20:33:48,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 3393. [2022-07-19 20:33:48,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3393 states, 2640 states have (on average 1.2162878787878788) internal successors, (3211), 2711 states have internal predecessors, (3211), 367 states have call successors, (367), 300 states have call predecessors, (367), 384 states have return successors, (507), 384 states have call predecessors, (507), 364 states have call successors, (507) [2022-07-19 20:33:48,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 4085 transitions. [2022-07-19 20:33:48,028 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 4085 transitions. Word has length 124 [2022-07-19 20:33:48,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:48,029 INFO L495 AbstractCegarLoop]: Abstraction has 3393 states and 4085 transitions. [2022-07-19 20:33:48,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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) [2022-07-19 20:33:48,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 4085 transitions. [2022-07-19 20:33:48,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 20:33:48,032 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:48,032 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] [2022-07-19 20:33:48,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 20:33:48,032 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:48,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:48,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1657912871, now seen corresponding path program 1 times [2022-07-19 20:33:48,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:48,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546255700] [2022-07-19 20:33:48,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:48,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:48,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:48,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:33:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:48,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:33:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:48,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:33:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:48,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:33:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:48,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:48,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:48,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546255700] [2022-07-19 20:33:48,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546255700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:48,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:48,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:33:48,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983549812] [2022-07-19 20:33:48,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:48,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:33:48,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:48,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:33:48,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:33:48,125 INFO L87 Difference]: Start difference. First operand 3393 states and 4085 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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) [2022-07-19 20:33:49,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:49,834 INFO L93 Difference]: Finished difference Result 4063 states and 5156 transitions. [2022-07-19 20:33:49,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:33:49,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 124 [2022-07-19 20:33:49,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:49,842 INFO L225 Difference]: With dead ends: 4063 [2022-07-19 20:33:49,843 INFO L226 Difference]: Without dead ends: 3819 [2022-07-19 20:33:49,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:33:49,844 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 1210 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:49,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1234 Valid, 1413 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 20:33:49,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3819 states. [2022-07-19 20:33:50,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3819 to 3644. [2022-07-19 20:33:50,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 2868 states have (on average 1.2454672245467224) internal successors, (3572), 2940 states have internal predecessors, (3572), 383 states have call successors, (383), 306 states have call predecessors, (383), 391 states have return successors, (526), 400 states have call predecessors, (526), 380 states have call successors, (526) [2022-07-19 20:33:50,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 4481 transitions. [2022-07-19 20:33:50,103 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 4481 transitions. Word has length 124 [2022-07-19 20:33:50,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:50,104 INFO L495 AbstractCegarLoop]: Abstraction has 3644 states and 4481 transitions. [2022-07-19 20:33:50,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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) [2022-07-19 20:33:50,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 4481 transitions. [2022-07-19 20:33:50,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 20:33:50,108 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:50,108 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] [2022-07-19 20:33:50,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 20:33:50,109 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:50,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:50,109 INFO L85 PathProgramCache]: Analyzing trace with hash 640264483, now seen corresponding path program 1 times [2022-07-19 20:33:50,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:50,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457647284] [2022-07-19 20:33:50,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:50,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:50,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:50,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:33:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:50,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:33:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:50,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:33:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:50,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:33:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:50,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:50,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457647284] [2022-07-19 20:33:50,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457647284] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:50,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:50,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:33:50,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043158312] [2022-07-19 20:33:50,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:50,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:33:50,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:50,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:33:50,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:33:50,205 INFO L87 Difference]: Start difference. First operand 3644 states and 4481 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:33:52,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:52,352 INFO L93 Difference]: Finished difference Result 4661 states and 6105 transitions. [2022-07-19 20:33:52,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:33:52,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-19 20:33:52,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:52,362 INFO L225 Difference]: With dead ends: 4661 [2022-07-19 20:33:52,362 INFO L226 Difference]: Without dead ends: 4166 [2022-07-19 20:33:52,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:33:52,365 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 1217 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 2194 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 2297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:52,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 2317 Invalid, 2297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2194 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 20:33:52,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4166 states. [2022-07-19 20:33:52,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4166 to 3878. [2022-07-19 20:33:52,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3079 states have (on average 1.2663202338421566) internal successors, (3899), 3152 states have internal predecessors, (3899), 399 states have call successors, (399), 312 states have call predecessors, (399), 398 states have return successors, (544), 417 states have call predecessors, (544), 396 states have call successors, (544) [2022-07-19 20:33:52,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 4842 transitions. [2022-07-19 20:33:52,691 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 4842 transitions. Word has length 124 [2022-07-19 20:33:52,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:52,692 INFO L495 AbstractCegarLoop]: Abstraction has 3878 states and 4842 transitions. [2022-07-19 20:33:52,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:33:52,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 4842 transitions. [2022-07-19 20:33:52,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 20:33:52,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:52,695 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] [2022-07-19 20:33:52,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 20:33:52,696 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:52,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:52,696 INFO L85 PathProgramCache]: Analyzing trace with hash 758705957, now seen corresponding path program 1 times [2022-07-19 20:33:52,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:52,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895786517] [2022-07-19 20:33:52,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:52,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:52,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:52,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:33:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:52,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:33:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:52,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:33:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:52,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:33:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:52,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:52,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895786517] [2022-07-19 20:33:52,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895786517] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:52,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:52,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:33:52,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277849343] [2022-07-19 20:33:52,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:52,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:33:52,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:52,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:33:52,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:33:52,800 INFO L87 Difference]: Start difference. First operand 3878 states and 4842 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:33:54,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:54,938 INFO L93 Difference]: Finished difference Result 5542 states and 7494 transitions. [2022-07-19 20:33:54,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:33:54,938 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-19 20:33:54,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:54,951 INFO L225 Difference]: With dead ends: 5542 [2022-07-19 20:33:54,951 INFO L226 Difference]: Without dead ends: 4813 [2022-07-19 20:33:54,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:33:54,958 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 1214 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 2196 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 2309 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:54,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 2309 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2196 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 20:33:54,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2022-07-19 20:33:55,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 4347. [2022-07-19 20:33:55,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 3502 states have (on average 1.3003997715591091) internal successors, (4554), 3577 states have internal predecessors, (4554), 431 states have call successors, (431), 324 states have call predecessors, (431), 412 states have return successors, (584), 451 states have call predecessors, (584), 428 states have call successors, (584) [2022-07-19 20:33:55,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 5569 transitions. [2022-07-19 20:33:55,254 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 5569 transitions. Word has length 124 [2022-07-19 20:33:55,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:55,255 INFO L495 AbstractCegarLoop]: Abstraction has 4347 states and 5569 transitions. [2022-07-19 20:33:55,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:33:55,255 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 5569 transitions. [2022-07-19 20:33:55,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 20:33:55,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:55,258 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] [2022-07-19 20:33:55,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 20:33:55,259 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:55,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:55,259 INFO L85 PathProgramCache]: Analyzing trace with hash -2146967325, now seen corresponding path program 1 times [2022-07-19 20:33:55,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:55,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735138057] [2022-07-19 20:33:55,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:55,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:55,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:55,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:33:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:55,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:33:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:55,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:33:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:55,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:33:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:55,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:55,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:55,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735138057] [2022-07-19 20:33:55,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735138057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:55,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:55,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:33:55,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171682985] [2022-07-19 20:33:55,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:55,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:33:55,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:55,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:33:55,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:33:55,391 INFO L87 Difference]: Start difference. First operand 4347 states and 5569 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:33:56,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:56,531 INFO L93 Difference]: Finished difference Result 5999 states and 8212 transitions. [2022-07-19 20:33:56,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:33:56,535 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-19 20:33:56,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:56,549 INFO L225 Difference]: With dead ends: 5999 [2022-07-19 20:33:56,549 INFO L226 Difference]: Without dead ends: 4801 [2022-07-19 20:33:56,555 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 [2022-07-19 20:33:56,555 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 941 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:56,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 1391 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 20:33:56,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2022-07-19 20:33:56,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 4347. [2022-07-19 20:33:56,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 3502 states have (on average 1.2989720159908624) internal successors, (4549), 3577 states have internal predecessors, (4549), 431 states have call successors, (431), 324 states have call predecessors, (431), 412 states have return successors, (584), 451 states have call predecessors, (584), 428 states have call successors, (584) [2022-07-19 20:33:56,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 5564 transitions. [2022-07-19 20:33:56,941 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 5564 transitions. Word has length 124 [2022-07-19 20:33:56,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:56,941 INFO L495 AbstractCegarLoop]: Abstraction has 4347 states and 5564 transitions. [2022-07-19 20:33:56,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:33:56,942 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 5564 transitions. [2022-07-19 20:33:56,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 20:33:56,945 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:56,945 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] [2022-07-19 20:33:56,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 20:33:56,945 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:56,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:56,946 INFO L85 PathProgramCache]: Analyzing trace with hash 114605925, now seen corresponding path program 1 times [2022-07-19 20:33:56,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:56,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077899722] [2022-07-19 20:33:56,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:56,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:56,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:56,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:33:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:57,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:33:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:57,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:33:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:57,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:33:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:57,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:57,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077899722] [2022-07-19 20:33:57,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077899722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:57,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:57,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:33:57,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358053919] [2022-07-19 20:33:57,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:57,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:33:57,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:57,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:33:57,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:33:57,052 INFO L87 Difference]: Start difference. First operand 4347 states and 5564 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:33:59,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:59,306 INFO L93 Difference]: Finished difference Result 7228 states and 10115 transitions. [2022-07-19 20:33:59,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:33:59,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-19 20:33:59,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:59,319 INFO L225 Difference]: With dead ends: 7228 [2022-07-19 20:33:59,320 INFO L226 Difference]: Without dead ends: 6030 [2022-07-19 20:33:59,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:33:59,325 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 1274 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1298 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 2080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:59,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1298 Valid, 1683 Invalid, 2080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 20:33:59,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6030 states. [2022-07-19 20:33:59,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6030 to 5295. [2022-07-19 20:33:59,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5295 states, 4358 states have (on average 1.3469481413492428) internal successors, (5870), 4437 states have internal predecessors, (5870), 495 states have call successors, (495), 348 states have call predecessors, (495), 440 states have return successors, (670), 519 states have call predecessors, (670), 492 states have call successors, (670) [2022-07-19 20:33:59,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5295 states to 5295 states and 7035 transitions. [2022-07-19 20:33:59,723 INFO L78 Accepts]: Start accepts. Automaton has 5295 states and 7035 transitions. Word has length 124 [2022-07-19 20:33:59,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:59,724 INFO L495 AbstractCegarLoop]: Abstraction has 5295 states and 7035 transitions. [2022-07-19 20:33:59,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:33:59,724 INFO L276 IsEmpty]: Start isEmpty. Operand 5295 states and 7035 transitions. [2022-07-19 20:33:59,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 20:33:59,728 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:59,728 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] [2022-07-19 20:33:59,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 20:33:59,728 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:59,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:59,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1192536473, now seen corresponding path program 1 times [2022-07-19 20:33:59,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:59,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098050258] [2022-07-19 20:33:59,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:59,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:59,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:59,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:33:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:59,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:33:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:59,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:33:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:59,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:33:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:59,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:59,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:59,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098050258] [2022-07-19 20:33:59,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098050258] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:59,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:59,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:33:59,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582310982] [2022-07-19 20:33:59,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:59,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:33:59,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:59,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:33:59,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:33:59,821 INFO L87 Difference]: Start difference. First operand 5295 states and 7035 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:34:01,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:01,167 INFO L93 Difference]: Finished difference Result 8182 states and 11624 transitions. [2022-07-19 20:34:01,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:34:01,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-19 20:34:01,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:01,182 INFO L225 Difference]: With dead ends: 8182 [2022-07-19 20:34:01,182 INFO L226 Difference]: Without dead ends: 6036 [2022-07-19 20:34:01,188 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 [2022-07-19 20:34:01,189 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 939 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:01,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 1382 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:34:01,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6036 states. [2022-07-19 20:34:01,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6036 to 5295. [2022-07-19 20:34:01,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5295 states, 4358 states have (on average 1.3448829738412116) internal successors, (5861), 4437 states have internal predecessors, (5861), 495 states have call successors, (495), 348 states have call predecessors, (495), 440 states have return successors, (670), 519 states have call predecessors, (670), 492 states have call successors, (670) [2022-07-19 20:34:01,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5295 states to 5295 states and 7026 transitions. [2022-07-19 20:34:01,575 INFO L78 Accepts]: Start accepts. Automaton has 5295 states and 7026 transitions. Word has length 124 [2022-07-19 20:34:01,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:01,575 INFO L495 AbstractCegarLoop]: Abstraction has 5295 states and 7026 transitions. [2022-07-19 20:34:01,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:34:01,576 INFO L276 IsEmpty]: Start isEmpty. Operand 5295 states and 7026 transitions. [2022-07-19 20:34:01,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 20:34:01,579 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:01,579 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] [2022-07-19 20:34:01,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 20:34:01,580 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:01,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:01,580 INFO L85 PathProgramCache]: Analyzing trace with hash 704960293, now seen corresponding path program 1 times [2022-07-19 20:34:01,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:01,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906868304] [2022-07-19 20:34:01,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:01,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:01,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:01,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:01,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:34:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:01,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:34:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:01,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:34:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:01,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:01,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:01,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906868304] [2022-07-19 20:34:01,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906868304] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:01,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:01,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:34:01,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866739588] [2022-07-19 20:34:01,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:01,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:34:01,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:01,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:34:01,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:34:01,669 INFO L87 Difference]: Start difference. First operand 5295 states and 7026 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:34:03,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:03,865 INFO L93 Difference]: Finished difference Result 10614 states and 15378 transitions. [2022-07-19 20:34:03,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:34:03,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-19 20:34:03,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:03,886 INFO L225 Difference]: With dead ends: 10614 [2022-07-19 20:34:03,886 INFO L226 Difference]: Without dead ends: 8468 [2022-07-19 20:34:03,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:34:03,894 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 1196 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 2128 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 2282 SdHoareTripleChecker+Invalid, 2238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:03,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 2282 Invalid, 2238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2128 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 20:34:03,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8468 states. [2022-07-19 20:34:04,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8468 to 7203. [2022-07-19 20:34:04,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7203 states, 6082 states have (on average 1.3987175271292338) internal successors, (8507), 6169 states have internal predecessors, (8507), 623 states have call successors, (623), 396 states have call predecessors, (623), 496 states have return successors, (860), 655 states have call predecessors, (860), 620 states have call successors, (860) [2022-07-19 20:34:04,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7203 states to 7203 states and 9990 transitions. [2022-07-19 20:34:04,354 INFO L78 Accepts]: Start accepts. Automaton has 7203 states and 9990 transitions. Word has length 124 [2022-07-19 20:34:04,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:04,354 INFO L495 AbstractCegarLoop]: Abstraction has 7203 states and 9990 transitions. [2022-07-19 20:34:04,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:34:04,355 INFO L276 IsEmpty]: Start isEmpty. Operand 7203 states and 9990 transitions. [2022-07-19 20:34:04,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 20:34:04,359 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:04,359 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] [2022-07-19 20:34:04,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 20:34:04,360 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:04,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:04,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1736001191, now seen corresponding path program 1 times [2022-07-19 20:34:04,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:04,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845765733] [2022-07-19 20:34:04,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:04,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:04,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:04,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:04,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:34:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:04,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:34:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:04,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:34:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:04,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:04,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845765733] [2022-07-19 20:34:04,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845765733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:04,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:04,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:34:04,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538086971] [2022-07-19 20:34:04,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:04,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:34:04,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:04,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:34:04,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:34:04,440 INFO L87 Difference]: Start difference. First operand 7203 states and 9990 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:34:05,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:05,786 INFO L93 Difference]: Finished difference Result 12554 states and 18475 transitions. [2022-07-19 20:34:05,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:34:05,787 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-19 20:34:05,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:05,806 INFO L225 Difference]: With dead ends: 12554 [2022-07-19 20:34:05,807 INFO L226 Difference]: Without dead ends: 8500 [2022-07-19 20:34:05,818 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 [2022-07-19 20:34:05,818 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 936 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:05,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 1373 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 20:34:05,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8500 states. [2022-07-19 20:34:06,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8500 to 7203. [2022-07-19 20:34:06,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7203 states, 6082 states have (on average 1.3959223939493588) internal successors, (8490), 6169 states have internal predecessors, (8490), 623 states have call successors, (623), 396 states have call predecessors, (623), 496 states have return successors, (860), 655 states have call predecessors, (860), 620 states have call successors, (860) [2022-07-19 20:34:06,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7203 states to 7203 states and 9973 transitions. [2022-07-19 20:34:06,304 INFO L78 Accepts]: Start accepts. Automaton has 7203 states and 9973 transitions. Word has length 124 [2022-07-19 20:34:06,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:06,304 INFO L495 AbstractCegarLoop]: Abstraction has 7203 states and 9973 transitions. [2022-07-19 20:34:06,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:34:06,304 INFO L276 IsEmpty]: Start isEmpty. Operand 7203 states and 9973 transitions. [2022-07-19 20:34:06,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 20:34:06,308 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:06,308 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] [2022-07-19 20:34:06,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 20:34:06,309 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:06,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:06,309 INFO L85 PathProgramCache]: Analyzing trace with hash -170402075, now seen corresponding path program 1 times [2022-07-19 20:34:06,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:06,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751009144] [2022-07-19 20:34:06,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:06,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:06,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:06,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:06,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:34:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:06,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:34:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:06,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:34:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:06,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:06,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751009144] [2022-07-19 20:34:06,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751009144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:06,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:06,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:34:06,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775875536] [2022-07-19 20:34:06,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:06,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:34:06,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:06,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:34:06,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:34:06,396 INFO L87 Difference]: Start difference. First operand 7203 states and 9973 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:34:09,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:09,162 INFO L93 Difference]: Finished difference Result 18906 states and 28242 transitions. [2022-07-19 20:34:09,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:34:09,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-19 20:34:09,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:09,192 INFO L225 Difference]: With dead ends: 18906 [2022-07-19 20:34:09,192 INFO L226 Difference]: Without dead ends: 14852 [2022-07-19 20:34:09,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:34:09,202 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 1439 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 2093 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 2208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:09,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1471 Valid, 2257 Invalid, 2208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2093 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 20:34:09,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14852 states. [2022-07-19 20:34:10,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14852 to 10841. [2022-07-19 20:34:10,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10841 states, 9368 states have (on average 1.4391545687446627) internal successors, (13482), 9471 states have internal predecessors, (13482), 863 states have call successors, (863), 492 states have call predecessors, (863), 608 states have return successors, (1278), 911 states have call predecessors, (1278), 860 states have call successors, (1278) [2022-07-19 20:34:10,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10841 states to 10841 states and 15623 transitions. [2022-07-19 20:34:10,046 INFO L78 Accepts]: Start accepts. Automaton has 10841 states and 15623 transitions. Word has length 124 [2022-07-19 20:34:10,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:10,046 INFO L495 AbstractCegarLoop]: Abstraction has 10841 states and 15623 transitions. [2022-07-19 20:34:10,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:34:10,046 INFO L276 IsEmpty]: Start isEmpty. Operand 10841 states and 15623 transitions. [2022-07-19 20:34:10,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 20:34:10,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:10,052 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] [2022-07-19 20:34:10,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 20:34:10,053 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:10,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:10,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1430669031, now seen corresponding path program 1 times [2022-07-19 20:34:10,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:10,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335328721] [2022-07-19 20:34:10,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:10,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:10,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:10,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:10,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:34:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:10,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:34:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:10,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:34:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:10,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:10,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:10,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335328721] [2022-07-19 20:34:10,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335328721] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:10,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:10,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:34:10,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076996500] [2022-07-19 20:34:10,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:10,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:34:10,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:10,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:34:10,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:34:10,145 INFO L87 Difference]: Start difference. First operand 10841 states and 15623 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:34:13,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:13,960 INFO L93 Difference]: Finished difference Result 32966 states and 50254 transitions. [2022-07-19 20:34:13,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:34:13,960 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-19 20:34:13,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:14,012 INFO L225 Difference]: With dead ends: 32966 [2022-07-19 20:34:14,015 INFO L226 Difference]: Without dead ends: 25274 [2022-07-19 20:34:14,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:34:14,034 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 1240 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 2487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:14,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1263 Valid, 2348 Invalid, 2487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 20:34:14,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25274 states. [2022-07-19 20:34:15,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25274 to 18258. [2022-07-19 20:34:15,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18258 states, 16097 states have (on average 1.4762999316642853) internal successors, (23764), 16232 states have internal predecessors, (23764), 1327 states have call successors, (1327), 684 states have call predecessors, (1327), 832 states have return successors, (2260), 1407 states have call predecessors, (2260), 1324 states have call successors, (2260) [2022-07-19 20:34:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18258 states to 18258 states and 27351 transitions. [2022-07-19 20:34:15,288 INFO L78 Accepts]: Start accepts. Automaton has 18258 states and 27351 transitions. Word has length 124 [2022-07-19 20:34:15,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:15,288 INFO L495 AbstractCegarLoop]: Abstraction has 18258 states and 27351 transitions. [2022-07-19 20:34:15,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:34:15,288 INFO L276 IsEmpty]: Start isEmpty. Operand 18258 states and 27351 transitions. [2022-07-19 20:34:15,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 20:34:15,295 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:15,295 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] [2022-07-19 20:34:15,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 20:34:15,295 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:15,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:15,296 INFO L85 PathProgramCache]: Analyzing trace with hash 373937829, now seen corresponding path program 1 times [2022-07-19 20:34:15,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:15,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369032926] [2022-07-19 20:34:15,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:15,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:15,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:15,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:15,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:34:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:15,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:34:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:15,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:34:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:15,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:15,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:15,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369032926] [2022-07-19 20:34:15,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369032926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:15,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:15,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:34:15,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41194603] [2022-07-19 20:34:15,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:15,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:34:15,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:15,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:34:15,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:34:15,374 INFO L87 Difference]: Start difference. First operand 18258 states and 27351 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:34:17,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:17,970 INFO L93 Difference]: Finished difference Result 37794 states and 58728 transitions. [2022-07-19 20:34:17,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:34:17,971 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-19 20:34:17,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:18,023 INFO L225 Difference]: With dead ends: 37794 [2022-07-19 20:34:18,024 INFO L226 Difference]: Without dead ends: 22685 [2022-07-19 20:34:18,067 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 [2022-07-19 20:34:18,068 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 938 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:18,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 1361 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 20:34:18,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22685 states. [2022-07-19 20:34:19,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22685 to 18258. [2022-07-19 20:34:19,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18258 states, 16097 states have (on average 1.4722619121575449) internal successors, (23699), 16232 states have internal predecessors, (23699), 1327 states have call successors, (1327), 684 states have call predecessors, (1327), 832 states have return successors, (2260), 1407 states have call predecessors, (2260), 1324 states have call successors, (2260) [2022-07-19 20:34:19,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18258 states to 18258 states and 27286 transitions. [2022-07-19 20:34:19,364 INFO L78 Accepts]: Start accepts. Automaton has 18258 states and 27286 transitions. Word has length 124 [2022-07-19 20:34:19,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:19,364 INFO L495 AbstractCegarLoop]: Abstraction has 18258 states and 27286 transitions. [2022-07-19 20:34:19,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:34:19,365 INFO L276 IsEmpty]: Start isEmpty. Operand 18258 states and 27286 transitions. [2022-07-19 20:34:19,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 20:34:19,372 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:19,372 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] [2022-07-19 20:34:19,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 20:34:19,372 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:19,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:19,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1725323047, now seen corresponding path program 1 times [2022-07-19 20:34:19,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:19,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203537149] [2022-07-19 20:34:19,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:19,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:19,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:19,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:19,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:34:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:19,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:34:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:19,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:34:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:19,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:19,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:19,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203537149] [2022-07-19 20:34:19,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203537149] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:19,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:19,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:34:19,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005926052] [2022-07-19 20:34:19,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:19,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:34:19,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:19,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:34:19,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:34:19,459 INFO L87 Difference]: Start difference. First operand 18258 states and 27286 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:34:24,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:24,971 INFO L93 Difference]: Finished difference Result 59017 states and 91664 transitions. [2022-07-19 20:34:24,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:34:24,972 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-19 20:34:24,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:25,109 INFO L225 Difference]: With dead ends: 59017 [2022-07-19 20:34:25,110 INFO L226 Difference]: Without dead ends: 43908 [2022-07-19 20:34:25,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:34:25,159 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 1255 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 2052 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 2195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:25,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1278 Valid, 1695 Invalid, 2195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 2052 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 20:34:25,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43908 states. [2022-07-19 20:34:27,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43908 to 33189. [2022-07-19 20:34:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33189 states, 29684 states have (on average 1.4965974935992454) internal successors, (44425), 29883 states have internal predecessors, (44425), 2223 states have call successors, (2223), 1068 states have call predecessors, (2223), 1280 states have return successors, (4678), 2367 states have call predecessors, (4678), 2220 states have call successors, (4678) [2022-07-19 20:34:27,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33189 states to 33189 states and 51326 transitions. [2022-07-19 20:34:27,579 INFO L78 Accepts]: Start accepts. Automaton has 33189 states and 51326 transitions. Word has length 124 [2022-07-19 20:34:27,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:27,580 INFO L495 AbstractCegarLoop]: Abstraction has 33189 states and 51326 transitions. [2022-07-19 20:34:27,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:34:27,580 INFO L276 IsEmpty]: Start isEmpty. Operand 33189 states and 51326 transitions. [2022-07-19 20:34:27,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 20:34:27,593 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:27,593 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] [2022-07-19 20:34:27,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 20:34:27,594 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:27,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:27,594 INFO L85 PathProgramCache]: Analyzing trace with hash 841814057, now seen corresponding path program 1 times [2022-07-19 20:34:27,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:27,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367938013] [2022-07-19 20:34:27,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:27,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:27,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:27,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:27,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:34:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:27,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:34:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:27,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:34:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:27,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:27,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:27,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367938013] [2022-07-19 20:34:27,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367938013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:27,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:27,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:34:27,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586621955] [2022-07-19 20:34:27,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:27,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:34:27,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:27,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:34:27,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:34:27,694 INFO L87 Difference]: Start difference. First operand 33189 states and 51326 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:34:36,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:36,846 INFO L93 Difference]: Finished difference Result 111994 states and 177898 transitions. [2022-07-19 20:34:36,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:34:36,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-19 20:34:36,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:37,077 INFO L225 Difference]: With dead ends: 111994 [2022-07-19 20:34:37,077 INFO L226 Difference]: Without dead ends: 81954 [2022-07-19 20:34:37,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:34:37,152 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 1234 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:37,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 2234 Invalid, 2156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 20:34:37,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81954 states. [2022-07-19 20:34:42,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81954 to 62982. [2022-07-19 20:34:42,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62982 states, 56853 states have (on average 1.5114593776933496) internal successors, (85931), 57180 states have internal predecessors, (85931), 3951 states have call successors, (3951), 1836 states have call predecessors, (3951), 2176 states have return successors, (10908), 4223 states have call predecessors, (10908), 3948 states have call successors, (10908) [2022-07-19 20:34:42,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62982 states to 62982 states and 100790 transitions. [2022-07-19 20:34:42,261 INFO L78 Accepts]: Start accepts. Automaton has 62982 states and 100790 transitions. Word has length 124 [2022-07-19 20:34:42,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:42,261 INFO L495 AbstractCegarLoop]: Abstraction has 62982 states and 100790 transitions. [2022-07-19 20:34:42,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:34:42,262 INFO L276 IsEmpty]: Start isEmpty. Operand 62982 states and 100790 transitions. [2022-07-19 20:34:42,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 20:34:42,288 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:42,288 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] [2022-07-19 20:34:42,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 20:34:42,288 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:42,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:42,289 INFO L85 PathProgramCache]: Analyzing trace with hash 813313767, now seen corresponding path program 1 times [2022-07-19 20:34:42,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:42,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121411991] [2022-07-19 20:34:42,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:42,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:34:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:34:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:34:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:42,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:42,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121411991] [2022-07-19 20:34:42,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121411991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:42,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:42,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:34:42,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142544207] [2022-07-19 20:34:42,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:42,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:34:42,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:42,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:34:42,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:34:42,386 INFO L87 Difference]: Start difference. First operand 62982 states and 100790 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-07-19 20:34:58,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:58,509 INFO L93 Difference]: Finished difference Result 215577 states and 352416 transitions. [2022-07-19 20:34:58,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:34:58,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-19 20:34:58,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:59,033 INFO L225 Difference]: With dead ends: 215577 [2022-07-19 20:34:59,034 INFO L226 Difference]: Without dead ends: 155744 [2022-07-19 20:34:59,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:34:59,176 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 1179 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 2141 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 2242 SdHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:59,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1202 Valid, 2242 Invalid, 2254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2141 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 20:34:59,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155744 states.