./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.09.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/systemc/token_ring.09.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 ae06fa96255229a08f1e8c01eaa7f353b1ba462dacd64e058a3c6957598773d9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:53:12,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:53:12,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:53:12,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:53:12,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:53:12,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:53:12,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:53:12,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:53:12,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:53:12,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:53:12,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:53:12,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:53:12,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:53:12,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:53:12,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:53:12,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:53:12,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:53:12,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:53:12,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:53:12,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:53:12,526 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:53:12,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:53:12,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:53:12,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:53:12,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:53:12,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:53:12,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:53:12,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:53:12,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:53:12,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:53:12,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:53:12,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:53:12,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:53:12,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:53:12,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:53:12,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:53:12,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:53:12,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:53:12,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:53:12,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:53:12,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:53:12,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:53:12,545 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:53:12,577 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:53:12,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:53:12,578 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:53:12,579 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:53:12,579 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:53:12,579 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:53:12,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:53:12,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:53:12,580 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:53:12,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:53:12,582 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:53:12,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:53:12,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:53:12,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:53:12,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:53:12,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:53:12,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:53:12,583 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:53:12,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:53:12,584 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:53:12,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:53:12,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:53:12,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:53:12,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:53:12,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:53:12,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:53:12,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:53:12,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:53:12,586 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:53:12,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:53:12,586 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:53:12,586 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:53:12,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:53:12,587 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae06fa96255229a08f1e8c01eaa7f353b1ba462dacd64e058a3c6957598773d9 [2022-07-22 17:53:12,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:53:12,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:53:12,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:53:12,902 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:53:12,903 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:53:12,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.09.cil-2.c [2022-07-22 17:53:12,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5a5fe521/020e3eeffa924a9494a6ab83de5a4b3a/FLAG28ad87722 [2022-07-22 17:53:13,424 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:53:13,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.09.cil-2.c [2022-07-22 17:53:13,443 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5a5fe521/020e3eeffa924a9494a6ab83de5a4b3a/FLAG28ad87722 [2022-07-22 17:53:13,781 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5a5fe521/020e3eeffa924a9494a6ab83de5a4b3a [2022-07-22 17:53:13,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:53:13,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:53:13,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:53:13,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:53:13,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:53:13,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:53:13" (1/1) ... [2022-07-22 17:53:13,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cb3f948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:53:13, skipping insertion in model container [2022-07-22 17:53:13,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:53:13" (1/1) ... [2022-07-22 17:53:13,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:53:13,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:53:14,038 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/systemc/token_ring.09.cil-2.c[671,684] [2022-07-22 17:53:14,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:53:14,184 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:53:14,196 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/systemc/token_ring.09.cil-2.c[671,684] [2022-07-22 17:53:14,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:53:14,287 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:53:14,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:53:14 WrapperNode [2022-07-22 17:53:14,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:53:14,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:53:14,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:53:14,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:53:14,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:53:14" (1/1) ... [2022-07-22 17:53:14,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:53:14" (1/1) ... [2022-07-22 17:53:14,357 INFO L137 Inliner]: procedures = 46, calls = 59, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 684 [2022-07-22 17:53:14,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:53:14,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:53:14,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:53:14,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:53:14,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:53:14" (1/1) ... [2022-07-22 17:53:14,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:53:14" (1/1) ... [2022-07-22 17:53:14,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:53:14" (1/1) ... [2022-07-22 17:53:14,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:53:14" (1/1) ... [2022-07-22 17:53:14,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:53:14" (1/1) ... [2022-07-22 17:53:14,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:53:14" (1/1) ... [2022-07-22 17:53:14,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:53:14" (1/1) ... [2022-07-22 17:53:14,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:53:14,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:53:14,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:53:14,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:53:14,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:53:14" (1/1) ... [2022-07-22 17:53:14,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:53:14,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:53:14,461 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) [2022-07-22 17:53:14,491 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 [2022-07-22 17:53:14,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:53:14,508 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-22 17:53:14,508 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-22 17:53:14,508 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 17:53:14,509 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 17:53:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 17:53:14,509 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 17:53:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 17:53:14,509 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 17:53:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 17:53:14,509 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 17:53:14,510 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 17:53:14,510 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 17:53:14,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:53:14,510 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 17:53:14,510 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 17:53:14,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:53:14,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:53:14,661 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:53:14,673 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:53:15,210 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:53:15,219 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:53:15,220 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-07-22 17:53:15,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:53:15 BoogieIcfgContainer [2022-07-22 17:53:15,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:53:15,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:53:15,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:53:15,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:53:15,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:53:13" (1/3) ... [2022-07-22 17:53:15,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eacd7b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:53:15, skipping insertion in model container [2022-07-22 17:53:15,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:53:14" (2/3) ... [2022-07-22 17:53:15,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eacd7b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:53:15, skipping insertion in model container [2022-07-22 17:53:15,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:53:15" (3/3) ... [2022-07-22 17:53:15,229 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.09.cil-2.c [2022-07-22 17:53:15,241 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:53:15,242 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:53:15,288 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:53:15,294 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@4303e687, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@44c5b87b [2022-07-22 17:53:15,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:53:15,306 INFO L276 IsEmpty]: Start isEmpty. Operand has 315 states, 281 states have (on average 1.6583629893238434) internal successors, (466), 285 states have internal predecessors, (466), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-22 17:53:15,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 17:53:15,323 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:53:15,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:53:15,325 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:53:15,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:53:15,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1520697994, now seen corresponding path program 1 times [2022-07-22 17:53:15,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:53:15,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448546163] [2022-07-22 17:53:15,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:53:15,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:53:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:15,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:53:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:15,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:53:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:15,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 17:53:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:15,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:53:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:15,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 17:53:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:15,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:53:15,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:53:15,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448546163] [2022-07-22 17:53:15,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448546163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:53:15,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:53:15,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:53:15,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871566268] [2022-07-22 17:53:15,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:53:15,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:53:15,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:53:15,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:53:15,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:53:15,895 INFO L87 Difference]: Start difference. First operand has 315 states, 281 states have (on average 1.6583629893238434) internal successors, (466), 285 states have internal predecessors, (466), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 3 states have internal predecessors, (134), 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) [2022-07-22 17:53:17,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:53:17,186 INFO L93 Difference]: Finished difference Result 725 states and 1199 transitions. [2022-07-22 17:53:17,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:53:17,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 3 states have internal predecessors, (134), 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 145 [2022-07-22 17:53:17,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:53:17,203 INFO L225 Difference]: With dead ends: 725 [2022-07-22 17:53:17,204 INFO L226 Difference]: Without dead ends: 418 [2022-07-22 17:53:17,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:53:17,213 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 817 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:53:17,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 871 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 17:53:17,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-07-22 17:53:17,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 309. [2022-07-22 17:53:17,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 277 states have (on average 1.5703971119133573) internal successors, (435), 279 states have internal predecessors, (435), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-22 17:53:17,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 483 transitions. [2022-07-22 17:53:17,344 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 483 transitions. Word has length 145 [2022-07-22 17:53:17,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:53:17,345 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 483 transitions. [2022-07-22 17:53:17,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 3 states have internal predecessors, (134), 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) [2022-07-22 17:53:17,346 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 483 transitions. [2022-07-22 17:53:17,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 17:53:17,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:53:17,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:53:17,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 17:53:17,353 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:53:17,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:53:17,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1231878604, now seen corresponding path program 1 times [2022-07-22 17:53:17,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:53:17,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845507969] [2022-07-22 17:53:17,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:53:17,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:53:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:17,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:53:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:17,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:53:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:17,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 17:53:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:17,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:53:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:17,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 17:53:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:17,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:53:17,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:53:17,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845507969] [2022-07-22 17:53:17,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845507969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:53:17,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:53:17,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:53:17,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46795847] [2022-07-22 17:53:17,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:53:17,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:53:17,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:53:17,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:53:17,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:53:17,589 INFO L87 Difference]: Start difference. First operand 309 states and 483 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 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) [2022-07-22 17:53:19,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:53:19,779 INFO L93 Difference]: Finished difference Result 1123 states and 1794 transitions. [2022-07-22 17:53:19,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:53:19,780 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 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 145 [2022-07-22 17:53:19,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:53:19,788 INFO L225 Difference]: With dead ends: 1123 [2022-07-22 17:53:19,788 INFO L226 Difference]: Without dead ends: 831 [2022-07-22 17:53:19,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:53:19,792 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 1224 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:53:19,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 1363 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1581 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 17:53:19,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2022-07-22 17:53:19,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 612. [2022-07-22 17:53:19,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 555 states have (on average 1.581981981981982) internal successors, (878), 558 states have internal predecessors, (878), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-07-22 17:53:19,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 965 transitions. [2022-07-22 17:53:19,852 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 965 transitions. Word has length 145 [2022-07-22 17:53:19,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:53:19,852 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 965 transitions. [2022-07-22 17:53:19,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 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) [2022-07-22 17:53:19,853 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 965 transitions. [2022-07-22 17:53:19,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 17:53:19,855 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:53:19,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:53:19,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 17:53:19,856 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:53:19,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:53:19,857 INFO L85 PathProgramCache]: Analyzing trace with hash -569587000, now seen corresponding path program 1 times [2022-07-22 17:53:19,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:53:19,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331484324] [2022-07-22 17:53:19,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:53:19,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:53:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:19,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:53:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:19,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:53:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:20,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 17:53:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:20,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:53:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:20,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 17:53:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:20,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:53:20,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:53:20,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331484324] [2022-07-22 17:53:20,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331484324] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:53:20,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:53:20,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:53:20,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735887752] [2022-07-22 17:53:20,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:53:20,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:53:20,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:53:20,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:53:20,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:53:20,051 INFO L87 Difference]: Start difference. First operand 612 states and 965 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-07-22 17:53:22,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:53:22,717 INFO L93 Difference]: Finished difference Result 1851 states and 2961 transitions. [2022-07-22 17:53:22,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:53:22,718 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 145 [2022-07-22 17:53:22,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:53:22,730 INFO L225 Difference]: With dead ends: 1851 [2022-07-22 17:53:22,730 INFO L226 Difference]: Without dead ends: 1256 [2022-07-22 17:53:22,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:53:22,742 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 1239 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 2464 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 2388 SdHoareTripleChecker+Invalid, 2537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:53:22,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 2388 Invalid, 2537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2464 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 17:53:22,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2022-07-22 17:53:22,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 894. [2022-07-22 17:53:22,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 812 states have (on average 1.5751231527093597) internal successors, (1279), 816 states have internal predecessors, (1279), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-07-22 17:53:22,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1404 transitions. [2022-07-22 17:53:22,825 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1404 transitions. Word has length 145 [2022-07-22 17:53:22,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:53:22,827 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 1404 transitions. [2022-07-22 17:53:22,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-07-22 17:53:22,827 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1404 transitions. [2022-07-22 17:53:22,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 17:53:22,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:53:22,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:53:22,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 17:53:22,833 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:53:22,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:53:22,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1276183606, now seen corresponding path program 1 times [2022-07-22 17:53:22,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:53:22,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569061664] [2022-07-22 17:53:22,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:53:22,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:53:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:22,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:53:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:22,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:53:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:22,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 17:53:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:22,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:53:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:22,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 17:53:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:22,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:53:22,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:53:22,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569061664] [2022-07-22 17:53:22,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569061664] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:53:22,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:53:22,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:53:22,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051961030] [2022-07-22 17:53:22,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:53:22,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:53:22,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:53:22,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:53:22,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:53:22,976 INFO L87 Difference]: Start difference. First operand 894 states and 1404 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-07-22 17:53:25,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:53:25,450 INFO L93 Difference]: Finished difference Result 2924 states and 4668 transitions. [2022-07-22 17:53:25,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:53:25,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 145 [2022-07-22 17:53:25,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:53:25,462 INFO L225 Difference]: With dead ends: 2924 [2022-07-22 17:53:25,463 INFO L226 Difference]: Without dead ends: 2047 [2022-07-22 17:53:25,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:53:25,477 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 1236 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 2542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:53:25,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 2380 Invalid, 2542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 17:53:25,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2022-07-22 17:53:25,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 1459. [2022-07-22 17:53:25,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1327 states have (on average 1.5689525244913338) internal successors, (2082), 1333 states have internal predecessors, (2082), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-07-22 17:53:25,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2287 transitions. [2022-07-22 17:53:25,612 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2287 transitions. Word has length 145 [2022-07-22 17:53:25,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:53:25,613 INFO L495 AbstractCegarLoop]: Abstraction has 1459 states and 2287 transitions. [2022-07-22 17:53:25,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-07-22 17:53:25,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2287 transitions. [2022-07-22 17:53:25,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 17:53:25,615 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:53:25,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:53:25,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 17:53:25,616 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:53:25,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:53:25,617 INFO L85 PathProgramCache]: Analyzing trace with hash -329145720, now seen corresponding path program 1 times [2022-07-22 17:53:25,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:53:25,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636100653] [2022-07-22 17:53:25,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:53:25,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:53:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:25,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:53:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:25,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:53:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:25,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 17:53:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:25,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:53:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:25,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 17:53:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:25,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:53:25,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:53:25,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636100653] [2022-07-22 17:53:25,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636100653] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:53:25,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:53:25,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:53:25,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432645265] [2022-07-22 17:53:25,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:53:25,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:53:25,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:53:25,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:53:25,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:53:25,773 INFO L87 Difference]: Start difference. First operand 1459 states and 2287 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-07-22 17:53:28,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:53:28,179 INFO L93 Difference]: Finished difference Result 4989 states and 7935 transitions. [2022-07-22 17:53:28,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:53:28,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 145 [2022-07-22 17:53:28,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:53:28,223 INFO L225 Difference]: With dead ends: 4989 [2022-07-22 17:53:28,224 INFO L226 Difference]: Without dead ends: 3547 [2022-07-22 17:53:28,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:53:28,229 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 1232 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 2376 SdHoareTripleChecker+Invalid, 2537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:53:28,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1248 Valid, 2376 Invalid, 2537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2461 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 17:53:28,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3547 states. [2022-07-22 17:53:28,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3547 to 2590. [2022-07-22 17:53:28,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2590 states, 2358 states have (on average 1.5640373197625106) internal successors, (3688), 2368 states have internal predecessors, (3688), 169 states have call successors, (169), 55 states have call predecessors, (169), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-22 17:53:28,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2590 states to 2590 states and 4059 transitions. [2022-07-22 17:53:28,403 INFO L78 Accepts]: Start accepts. Automaton has 2590 states and 4059 transitions. Word has length 145 [2022-07-22 17:53:28,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:53:28,404 INFO L495 AbstractCegarLoop]: Abstraction has 2590 states and 4059 transitions. [2022-07-22 17:53:28,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-07-22 17:53:28,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2590 states and 4059 transitions. [2022-07-22 17:53:28,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 17:53:28,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:53:28,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:53:28,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 17:53:28,408 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:53:28,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:53:28,409 INFO L85 PathProgramCache]: Analyzing trace with hash 532687882, now seen corresponding path program 1 times [2022-07-22 17:53:28,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:53:28,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669856408] [2022-07-22 17:53:28,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:53:28,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:53:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:28,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:53:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:28,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:53:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:28,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 17:53:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:28,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:53:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:28,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 17:53:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:28,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:53:28,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:53:28,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669856408] [2022-07-22 17:53:28,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669856408] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:53:28,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:53:28,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:53:28,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119650238] [2022-07-22 17:53:28,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:53:28,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:53:28,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:53:28,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:53:28,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:53:28,569 INFO L87 Difference]: Start difference. First operand 2590 states and 4059 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-07-22 17:53:31,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:53:31,233 INFO L93 Difference]: Finished difference Result 9118 states and 14485 transitions. [2022-07-22 17:53:31,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:53:31,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 145 [2022-07-22 17:53:31,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:53:31,266 INFO L225 Difference]: With dead ends: 9118 [2022-07-22 17:53:31,266 INFO L226 Difference]: Without dead ends: 6545 [2022-07-22 17:53:31,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:53:31,277 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 1231 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 2453 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 2532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:53:31,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 2370 Invalid, 2532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2453 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 17:53:31,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6545 states. [2022-07-22 17:53:31,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6545 to 4857. [2022-07-22 17:53:31,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4857 states, 4425 states have (on average 1.560677966101695) internal successors, (6906), 4443 states have internal predecessors, (6906), 313 states have call successors, (313), 103 states have call predecessors, (313), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-07-22 17:53:31,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4857 states to 4857 states and 7627 transitions. [2022-07-22 17:53:31,643 INFO L78 Accepts]: Start accepts. Automaton has 4857 states and 7627 transitions. Word has length 145 [2022-07-22 17:53:31,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:53:31,643 INFO L495 AbstractCegarLoop]: Abstraction has 4857 states and 7627 transitions. [2022-07-22 17:53:31,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-07-22 17:53:31,644 INFO L276 IsEmpty]: Start isEmpty. Operand 4857 states and 7627 transitions. [2022-07-22 17:53:31,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 17:53:31,648 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:53:31,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:53:31,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:53:31,649 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:53:31,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:53:31,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1517721016, now seen corresponding path program 1 times [2022-07-22 17:53:31,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:53:31,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348915479] [2022-07-22 17:53:31,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:53:31,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:53:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:31,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:53:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:31,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:53:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:31,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 17:53:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:31,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:53:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:31,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 17:53:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:31,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:53:31,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:53:31,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348915479] [2022-07-22 17:53:31,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348915479] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:53:31,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:53:31,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:53:31,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988914919] [2022-07-22 17:53:31,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:53:31,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:53:31,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:53:31,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:53:31,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:53:31,829 INFO L87 Difference]: Start difference. First operand 4857 states and 7627 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-07-22 17:53:34,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:53:34,466 INFO L93 Difference]: Finished difference Result 17360 states and 27615 transitions. [2022-07-22 17:53:34,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:53:34,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 145 [2022-07-22 17:53:34,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:53:34,527 INFO L225 Difference]: With dead ends: 17360 [2022-07-22 17:53:34,528 INFO L226 Difference]: Without dead ends: 12520 [2022-07-22 17:53:34,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:53:34,548 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 1315 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 2161 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 2275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:53:34,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 1624 Invalid, 2275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2161 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 17:53:34,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12520 states. [2022-07-22 17:53:35,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12520 to 9421. [2022-07-22 17:53:35,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9421 states, 8589 states have (on average 1.559436488531843) internal successors, (13394), 8623 states have internal predecessors, (13394), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-22 17:53:35,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9421 states to 9421 states and 14869 transitions. [2022-07-22 17:53:35,290 INFO L78 Accepts]: Start accepts. Automaton has 9421 states and 14869 transitions. Word has length 145 [2022-07-22 17:53:35,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:53:35,290 INFO L495 AbstractCegarLoop]: Abstraction has 9421 states and 14869 transitions. [2022-07-22 17:53:35,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-07-22 17:53:35,291 INFO L276 IsEmpty]: Start isEmpty. Operand 9421 states and 14869 transitions. [2022-07-22 17:53:35,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 17:53:35,300 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:53:35,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:53:35,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:53:35,301 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:53:35,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:53:35,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1684611078, now seen corresponding path program 1 times [2022-07-22 17:53:35,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:53:35,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814702226] [2022-07-22 17:53:35,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:53:35,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:53:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:35,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:53:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:35,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:53:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:35,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 17:53:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:35,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:53:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:35,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 17:53:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:35,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:53:35,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:53:35,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814702226] [2022-07-22 17:53:35,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814702226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:53:35,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:53:35,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:53:35,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812188900] [2022-07-22 17:53:35,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:53:35,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:53:35,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:53:35,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:53:35,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:53:35,441 INFO L87 Difference]: Start difference. First operand 9421 states and 14869 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-07-22 17:53:38,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:53:38,701 INFO L93 Difference]: Finished difference Result 33878 states and 54131 transitions. [2022-07-22 17:53:38,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:53:38,702 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 145 [2022-07-22 17:53:38,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:53:38,829 INFO L225 Difference]: With dead ends: 33878 [2022-07-22 17:53:38,829 INFO L226 Difference]: Without dead ends: 24474 [2022-07-22 17:53:38,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:53:38,872 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 1225 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 2425 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 2357 SdHoareTripleChecker+Invalid, 2505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:53:38,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 2357 Invalid, 2505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2425 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 17:53:38,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24474 states. [2022-07-22 17:53:40,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24474 to 18578. [2022-07-22 17:53:40,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18578 states, 16946 states have (on average 1.5585978992092528) internal successors, (26412), 17012 states have internal predecessors, (26412), 1177 states have call successors, (1177), 391 states have call predecessors, (1177), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2022-07-22 17:53:40,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18578 states to 18578 states and 29557 transitions. [2022-07-22 17:53:40,245 INFO L78 Accepts]: Start accepts. Automaton has 18578 states and 29557 transitions. Word has length 145 [2022-07-22 17:53:40,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:53:40,245 INFO L495 AbstractCegarLoop]: Abstraction has 18578 states and 29557 transitions. [2022-07-22 17:53:40,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-07-22 17:53:40,246 INFO L276 IsEmpty]: Start isEmpty. Operand 18578 states and 29557 transitions. [2022-07-22 17:53:40,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 17:53:40,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:53:40,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:53:40,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:53:40,259 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:53:40,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:53:40,260 INFO L85 PathProgramCache]: Analyzing trace with hash 402438792, now seen corresponding path program 1 times [2022-07-22 17:53:40,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:53:40,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941298519] [2022-07-22 17:53:40,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:53:40,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:53:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:40,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:53:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:40,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:53:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:40,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 17:53:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:40,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:53:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:40,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 17:53:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:40,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:53:40,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:53:40,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941298519] [2022-07-22 17:53:40,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941298519] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:53:40,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:53:40,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:53:40,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526595852] [2022-07-22 17:53:40,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:53:40,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:53:40,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:53:40,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:53:40,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:53:40,387 INFO L87 Difference]: Start difference. First operand 18578 states and 29557 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-07-22 17:53:45,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:53:45,413 INFO L93 Difference]: Finished difference Result 66913 states and 107761 transitions. [2022-07-22 17:53:45,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:53:45,414 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 145 [2022-07-22 17:53:45,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:53:45,639 INFO L225 Difference]: With dead ends: 66913 [2022-07-22 17:53:45,640 INFO L226 Difference]: Without dead ends: 48352 [2022-07-22 17:53:45,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:53:45,728 INFO L413 NwaCegarLoop]: 781 mSDtfsCounter, 1224 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 2497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:53:45,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 2352 Invalid, 2497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 17:53:45,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48352 states. [2022-07-22 17:53:48,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48352 to 36955. [2022-07-22 17:53:48,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36955 states, 33723 states have (on average 1.5580464371497198) internal successors, (52542), 33853 states have internal predecessors, (52542), 2329 states have call successors, (2329), 775 states have call predecessors, (2329), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2022-07-22 17:53:48,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36955 states to 36955 states and 59513 transitions. [2022-07-22 17:53:48,369 INFO L78 Accepts]: Start accepts. Automaton has 36955 states and 59513 transitions. Word has length 145 [2022-07-22 17:53:48,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:53:48,369 INFO L495 AbstractCegarLoop]: Abstraction has 36955 states and 59513 transitions. [2022-07-22 17:53:48,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-07-22 17:53:48,370 INFO L276 IsEmpty]: Start isEmpty. Operand 36955 states and 59513 transitions. [2022-07-22 17:53:48,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 17:53:48,396 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:53:48,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:53:48,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:53:48,397 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:53:48,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:53:48,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1440036922, now seen corresponding path program 1 times [2022-07-22 17:53:48,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:53:48,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952923625] [2022-07-22 17:53:48,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:53:48,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:53:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:48,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:53:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:48,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:53:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:48,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 17:53:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:48,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:53:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:48,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 17:53:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:48,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:53:48,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:53:48,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952923625] [2022-07-22 17:53:48,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952923625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:53:48,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:53:48,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:53:48,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833392528] [2022-07-22 17:53:48,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:53:48,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:53:48,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:53:48,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:53:48,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:53:48,522 INFO L87 Difference]: Start difference. First operand 36955 states and 59513 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-07-22 17:53:56,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:53:56,303 INFO L93 Difference]: Finished difference Result 132984 states and 216871 transitions. [2022-07-22 17:53:56,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:53:56,303 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 145 [2022-07-22 17:53:56,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:53:56,752 INFO L225 Difference]: With dead ends: 132984 [2022-07-22 17:53:56,752 INFO L226 Difference]: Without dead ends: 96046 [2022-07-22 17:53:56,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:53:56,888 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 1223 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 2409 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 2489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:53:56,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 2347 Invalid, 2489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2409 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 17:53:56,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96046 states. [2022-07-22 17:54:01,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96046 to 73836. [2022-07-22 17:54:01,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73836 states, 67404 states have (on average 1.5576523648448164) internal successors, (104992), 67662 states have internal predecessors, (104992), 4633 states have call successors, (4633), 1543 states have call predecessors, (4633), 1798 states have return successors, (11448), 4886 states have call predecessors, (11448), 4631 states have call successors, (11448) [2022-07-22 17:54:01,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73836 states to 73836 states and 121073 transitions. [2022-07-22 17:54:01,982 INFO L78 Accepts]: Start accepts. Automaton has 73836 states and 121073 transitions. Word has length 145 [2022-07-22 17:54:01,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:54:01,983 INFO L495 AbstractCegarLoop]: Abstraction has 73836 states and 121073 transitions. [2022-07-22 17:54:01,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-07-22 17:54:01,983 INFO L276 IsEmpty]: Start isEmpty. Operand 73836 states and 121073 transitions. [2022-07-22 17:54:02,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 17:54:02,042 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:54:02,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:54:02,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 17:54:02,043 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:54:02,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:54:02,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1132927688, now seen corresponding path program 1 times [2022-07-22 17:54:02,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:54:02,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736812580] [2022-07-22 17:54:02,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:54:02,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:54:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:02,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:54:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:02,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:54:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:02,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 17:54:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:02,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:54:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:02,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 17:54:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:02,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:54:02,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:54:02,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736812580] [2022-07-22 17:54:02,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736812580] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:54:02,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:54:02,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:54:02,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389085270] [2022-07-22 17:54:02,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:54:02,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:54:02,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:54:02,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:54:02,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:54:02,184 INFO L87 Difference]: Start difference. First operand 73836 states and 121073 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-07-22 17:54:20,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:54:20,987 INFO L93 Difference]: Finished difference Result 299687 states and 493471 transitions. [2022-07-22 17:54:20,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:54:20,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 145 [2022-07-22 17:54:20,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:54:22,102 INFO L225 Difference]: With dead ends: 299687 [2022-07-22 17:54:22,102 INFO L226 Difference]: Without dead ends: 225868 [2022-07-22 17:54:22,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:54:22,508 INFO L413 NwaCegarLoop]: 769 mSDtfsCounter, 1591 mSDsluCounter, 1563 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 2479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:54:22,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 2332 Invalid, 2479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 17:54:22,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225868 states.