./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/locks/test_locks_8.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/locks/test_locks_8.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 b7157ba450d9d62b74d19027a6860eb7210e35a76921ceb23a9c0a69add85337 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 10:57:35,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 10:57:35,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 10:57:35,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 10:57:35,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 10:57:35,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 10:57:35,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 10:57:35,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 10:57:35,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 10:57:35,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 10:57:35,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 10:57:35,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 10:57:35,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 10:57:35,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 10:57:35,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 10:57:35,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 10:57:35,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 10:57:35,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 10:57:35,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 10:57:35,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 10:57:35,514 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 10:57:35,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 10:57:35,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 10:57:35,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 10:57:35,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 10:57:35,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 10:57:35,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 10:57:35,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 10:57:35,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 10:57:35,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 10:57:35,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 10:57:35,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 10:57:35,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 10:57:35,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 10:57:35,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 10:57:35,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 10:57:35,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 10:57:35,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 10:57:35,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 10:57:35,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 10:57:35,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 10:57:35,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 10:57:35,534 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 10:57:35,559 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 10:57:35,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 10:57:35,566 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 10:57:35,567 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 10:57:35,567 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 10:57:35,567 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 10:57:35,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 10:57:35,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 10:57:35,568 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 10:57:35,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 10:57:35,569 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 10:57:35,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 10:57:35,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 10:57:35,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 10:57:35,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 10:57:35,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 10:57:35,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 10:57:35,570 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 10:57:35,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 10:57:35,572 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 10:57:35,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 10:57:35,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 10:57:35,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 10:57:35,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 10:57:35,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:57:35,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 10:57:35,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 10:57:35,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 10:57:35,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 10:57:35,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 10:57:35,574 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 10:57:35,574 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 10:57:35,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 10:57:35,574 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7157ba450d9d62b74d19027a6860eb7210e35a76921ceb23a9c0a69add85337 [2022-07-19 10:57:35,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 10:57:35,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 10:57:35,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 10:57:35,779 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 10:57:35,780 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 10:57:35,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_8.c [2022-07-19 10:57:35,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0c6c3ece/0ce7937d22624785a0273aa33ed91cd7/FLAG09f6749db [2022-07-19 10:57:36,237 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 10:57:36,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_8.c [2022-07-19 10:57:36,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0c6c3ece/0ce7937d22624785a0273aa33ed91cd7/FLAG09f6749db [2022-07-19 10:57:36,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0c6c3ece/0ce7937d22624785a0273aa33ed91cd7 [2022-07-19 10:57:36,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 10:57:36,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 10:57:36,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 10:57:36,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 10:57:36,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 10:57:36,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:57:36" (1/1) ... [2022-07-19 10:57:36,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d84f95f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:57:36, skipping insertion in model container [2022-07-19 10:57:36,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:57:36" (1/1) ... [2022-07-19 10:57:36,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 10:57:36,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 10:57:36,437 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/locks/test_locks_8.c[3218,3231] [2022-07-19 10:57:36,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:57:36,445 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 10:57:36,475 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/locks/test_locks_8.c[3218,3231] [2022-07-19 10:57:36,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:57:36,491 INFO L208 MainTranslator]: Completed translation [2022-07-19 10:57:36,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:57:36 WrapperNode [2022-07-19 10:57:36,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 10:57:36,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 10:57:36,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 10:57:36,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 10:57:36,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:57:36" (1/1) ... [2022-07-19 10:57:36,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:57:36" (1/1) ... [2022-07-19 10:57:36,518 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 116 [2022-07-19 10:57:36,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 10:57:36,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 10:57:36,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 10:57:36,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 10:57:36,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:57:36" (1/1) ... [2022-07-19 10:57:36,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:57:36" (1/1) ... [2022-07-19 10:57:36,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:57:36" (1/1) ... [2022-07-19 10:57:36,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:57:36" (1/1) ... [2022-07-19 10:57:36,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:57:36" (1/1) ... [2022-07-19 10:57:36,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:57:36" (1/1) ... [2022-07-19 10:57:36,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:57:36" (1/1) ... [2022-07-19 10:57:36,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 10:57:36,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 10:57:36,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 10:57:36,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 10:57:36,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:57:36" (1/1) ... [2022-07-19 10:57:36,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:57:36,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:57:36,571 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 10:57:36,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 10:57:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 10:57:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 10:57:36,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 10:57:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 10:57:36,646 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 10:57:36,647 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 10:57:36,787 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 10:57:36,791 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 10:57:36,791 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 10:57:36,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:57:36 BoogieIcfgContainer [2022-07-19 10:57:36,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 10:57:36,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 10:57:36,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 10:57:36,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 10:57:36,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:57:36" (1/3) ... [2022-07-19 10:57:36,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4fd854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:57:36, skipping insertion in model container [2022-07-19 10:57:36,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:57:36" (2/3) ... [2022-07-19 10:57:36,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4fd854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:57:36, skipping insertion in model container [2022-07-19 10:57:36,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:57:36" (3/3) ... [2022-07-19 10:57:36,798 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_8.c [2022-07-19 10:57:36,807 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 10:57:36,808 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 10:57:36,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 10:57:36,846 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@5c6b5da8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@74545e99 [2022-07-19 10:57:36,846 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 10:57:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.875) internal successors, (60), 33 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:36,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-19 10:57:36,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:57:36,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:57:36,855 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:57:36,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:57:36,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1577492323, now seen corresponding path program 1 times [2022-07-19 10:57:36,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:57:36,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797669427] [2022-07-19 10:57:36,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:57:36,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:57:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:57:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:57:37,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:57:37,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797669427] [2022-07-19 10:57:37,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797669427] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:57:37,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:57:37,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:57:37,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334464639] [2022-07-19 10:57:37,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:57:37,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:57:37,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:57:37,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:57:37,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,064 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.875) internal successors, (60), 33 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:57:37,109 INFO L93 Difference]: Finished difference Result 71 states and 121 transitions. [2022-07-19 10:57:37,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:57:37,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-07-19 10:57:37,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:57:37,119 INFO L225 Difference]: With dead ends: 71 [2022-07-19 10:57:37,119 INFO L226 Difference]: Without dead ends: 57 [2022-07-19 10:57:37,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,125 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 42 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:57:37,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 115 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:57:37,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-19 10:57:37,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2022-07-19 10:57:37,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 38 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 70 transitions. [2022-07-19 10:57:37,155 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 70 transitions. Word has length 15 [2022-07-19 10:57:37,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:57:37,155 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 70 transitions. [2022-07-19 10:57:37,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,156 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 70 transitions. [2022-07-19 10:57:37,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-19 10:57:37,156 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:57:37,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:57:37,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 10:57:37,157 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:57:37,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:57:37,159 INFO L85 PathProgramCache]: Analyzing trace with hash -876427745, now seen corresponding path program 1 times [2022-07-19 10:57:37,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:57:37,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523676576] [2022-07-19 10:57:37,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:57:37,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:57:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:57:37,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:57:37,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:57:37,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523676576] [2022-07-19 10:57:37,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523676576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:57:37,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:57:37,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:57:37,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794889103] [2022-07-19 10:57:37,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:57:37,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:57:37,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:57:37,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:57:37,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,215 INFO L87 Difference]: Start difference. First operand 39 states and 70 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:57:37,237 INFO L93 Difference]: Finished difference Result 94 states and 169 transitions. [2022-07-19 10:57:37,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:57:37,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-07-19 10:57:37,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:57:37,238 INFO L225 Difference]: With dead ends: 94 [2022-07-19 10:57:37,238 INFO L226 Difference]: Without dead ends: 57 [2022-07-19 10:57:37,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,245 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 38 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:57:37,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 115 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:57:37,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-19 10:57:37,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2022-07-19 10:57:37,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.8148148148148149) internal successors, (98), 54 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 98 transitions. [2022-07-19 10:57:37,250 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 98 transitions. Word has length 15 [2022-07-19 10:57:37,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:57:37,251 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 98 transitions. [2022-07-19 10:57:37,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,251 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 98 transitions. [2022-07-19 10:57:37,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-19 10:57:37,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:57:37,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:57:37,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 10:57:37,252 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:57:37,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:57:37,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1657407761, now seen corresponding path program 1 times [2022-07-19 10:57:37,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:57:37,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042927258] [2022-07-19 10:57:37,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:57:37,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:57:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:57:37,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:57:37,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:57:37,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042927258] [2022-07-19 10:57:37,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042927258] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:57:37,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:57:37,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:57:37,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970382773] [2022-07-19 10:57:37,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:57:37,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:57:37,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:57:37,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:57:37,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,281 INFO L87 Difference]: Start difference. First operand 55 states and 98 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:57:37,290 INFO L93 Difference]: Finished difference Result 87 states and 150 transitions. [2022-07-19 10:57:37,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:57:37,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-19 10:57:37,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:57:37,291 INFO L225 Difference]: With dead ends: 87 [2022-07-19 10:57:37,291 INFO L226 Difference]: Without dead ends: 60 [2022-07-19 10:57:37,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,293 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 40 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:57:37,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 128 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:57:37,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-07-19 10:57:37,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2022-07-19 10:57:37,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.7543859649122806) internal successors, (100), 57 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 100 transitions. [2022-07-19 10:57:37,299 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 100 transitions. Word has length 16 [2022-07-19 10:57:37,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:57:37,300 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 100 transitions. [2022-07-19 10:57:37,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,300 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 100 transitions. [2022-07-19 10:57:37,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-19 10:57:37,302 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:57:37,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:57:37,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 10:57:37,303 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:57:37,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:57:37,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1399242323, now seen corresponding path program 1 times [2022-07-19 10:57:37,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:57:37,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080480387] [2022-07-19 10:57:37,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:57:37,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:57:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:57:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:57:37,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:57:37,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080480387] [2022-07-19 10:57:37,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080480387] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:57:37,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:57:37,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:57:37,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432430726] [2022-07-19 10:57:37,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:57:37,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:57:37,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:57:37,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:57:37,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,343 INFO L87 Difference]: Start difference. First operand 58 states and 100 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:57:37,370 INFO L93 Difference]: Finished difference Result 109 states and 189 transitions. [2022-07-19 10:57:37,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:57:37,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-19 10:57:37,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:57:37,371 INFO L225 Difference]: With dead ends: 109 [2022-07-19 10:57:37,371 INFO L226 Difference]: Without dead ends: 107 [2022-07-19 10:57:37,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,372 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 35 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:57:37,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 101 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:57:37,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-07-19 10:57:37,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 77. [2022-07-19 10:57:37,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.75) internal successors, (133), 76 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 133 transitions. [2022-07-19 10:57:37,382 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 133 transitions. Word has length 16 [2022-07-19 10:57:37,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:57:37,383 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 133 transitions. [2022-07-19 10:57:37,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,383 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 133 transitions. [2022-07-19 10:57:37,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-19 10:57:37,384 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:57:37,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:57:37,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 10:57:37,384 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:57:37,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:57:37,385 INFO L85 PathProgramCache]: Analyzing trace with hash -698177745, now seen corresponding path program 1 times [2022-07-19 10:57:37,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:57:37,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126361597] [2022-07-19 10:57:37,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:57:37,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:57:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:57:37,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:57:37,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:57:37,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126361597] [2022-07-19 10:57:37,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126361597] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:57:37,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:57:37,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:57:37,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606174143] [2022-07-19 10:57:37,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:57:37,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:57:37,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:57:37,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:57:37,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,412 INFO L87 Difference]: Start difference. First operand 77 states and 133 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:57:37,424 INFO L93 Difference]: Finished difference Result 181 states and 315 transitions. [2022-07-19 10:57:37,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:57:37,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-19 10:57:37,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:57:37,426 INFO L225 Difference]: With dead ends: 181 [2022-07-19 10:57:37,426 INFO L226 Difference]: Without dead ends: 109 [2022-07-19 10:57:37,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,428 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 37 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:57:37,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 116 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:57:37,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-07-19 10:57:37,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2022-07-19 10:57:37,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.7264150943396226) internal successors, (183), 106 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 183 transitions. [2022-07-19 10:57:37,447 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 183 transitions. Word has length 16 [2022-07-19 10:57:37,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:57:37,447 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 183 transitions. [2022-07-19 10:57:37,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,448 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 183 transitions. [2022-07-19 10:57:37,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-19 10:57:37,448 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:57:37,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:57:37,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 10:57:37,449 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:57:37,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:57:37,450 INFO L85 PathProgramCache]: Analyzing trace with hash -426624716, now seen corresponding path program 1 times [2022-07-19 10:57:37,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:57:37,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257589498] [2022-07-19 10:57:37,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:57:37,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:57:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:57:37,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:57:37,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:57:37,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257589498] [2022-07-19 10:57:37,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257589498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:57:37,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:57:37,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:57:37,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386329170] [2022-07-19 10:57:37,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:57:37,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:57:37,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:57:37,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:57:37,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,481 INFO L87 Difference]: Start difference. First operand 107 states and 183 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:57:37,505 INFO L93 Difference]: Finished difference Result 162 states and 274 transitions. [2022-07-19 10:57:37,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:57:37,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-19 10:57:37,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:57:37,506 INFO L225 Difference]: With dead ends: 162 [2022-07-19 10:57:37,506 INFO L226 Difference]: Without dead ends: 111 [2022-07-19 10:57:37,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,507 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 39 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:57:37,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 124 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:57:37,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-07-19 10:57:37,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2022-07-19 10:57:37,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.6944444444444444) internal successors, (183), 108 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 183 transitions. [2022-07-19 10:57:37,513 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 183 transitions. Word has length 17 [2022-07-19 10:57:37,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:57:37,513 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 183 transitions. [2022-07-19 10:57:37,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,513 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 183 transitions. [2022-07-19 10:57:37,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-19 10:57:37,513 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:57:37,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:57:37,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 10:57:37,514 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:57:37,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:57:37,514 INFO L85 PathProgramCache]: Analyzing trace with hash -168459278, now seen corresponding path program 1 times [2022-07-19 10:57:37,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:57:37,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230832482] [2022-07-19 10:57:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:57:37,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:57:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:57:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:57:37,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:57:37,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230832482] [2022-07-19 10:57:37,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230832482] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:57:37,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:57:37,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:57:37,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836778042] [2022-07-19 10:57:37,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:57:37,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:57:37,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:57:37,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:57:37,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,577 INFO L87 Difference]: Start difference. First operand 109 states and 183 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:57:37,590 INFO L93 Difference]: Finished difference Result 309 states and 521 transitions. [2022-07-19 10:57:37,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:57:37,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-19 10:57:37,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:57:37,592 INFO L225 Difference]: With dead ends: 309 [2022-07-19 10:57:37,592 INFO L226 Difference]: Without dead ends: 207 [2022-07-19 10:57:37,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,593 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 37 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:57:37,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 103 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:57:37,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-07-19 10:57:37,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2022-07-19 10:57:37,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.661764705882353) internal successors, (339), 204 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 339 transitions. [2022-07-19 10:57:37,605 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 339 transitions. Word has length 17 [2022-07-19 10:57:37,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:57:37,605 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 339 transitions. [2022-07-19 10:57:37,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,606 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 339 transitions. [2022-07-19 10:57:37,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-19 10:57:37,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:57:37,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:57:37,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 10:57:37,607 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:57:37,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:57:37,608 INFO L85 PathProgramCache]: Analyzing trace with hash -869523856, now seen corresponding path program 1 times [2022-07-19 10:57:37,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:57:37,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705905005] [2022-07-19 10:57:37,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:57:37,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:57:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:57:37,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:57:37,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:57:37,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705905005] [2022-07-19 10:57:37,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705905005] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:57:37,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:57:37,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:57:37,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406043234] [2022-07-19 10:57:37,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:57:37,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:57:37,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:57:37,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:57:37,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,630 INFO L87 Difference]: Start difference. First operand 205 states and 339 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:57:37,638 INFO L93 Difference]: Finished difference Result 257 states and 429 transitions. [2022-07-19 10:57:37,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:57:37,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-19 10:57:37,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:57:37,640 INFO L225 Difference]: With dead ends: 257 [2022-07-19 10:57:37,640 INFO L226 Difference]: Without dead ends: 255 [2022-07-19 10:57:37,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,641 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 32 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:57:37,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 134 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:57:37,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-07-19 10:57:37,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 205. [2022-07-19 10:57:37,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.642156862745098) internal successors, (335), 204 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 335 transitions. [2022-07-19 10:57:37,667 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 335 transitions. Word has length 17 [2022-07-19 10:57:37,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:57:37,667 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 335 transitions. [2022-07-19 10:57:37,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,668 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 335 transitions. [2022-07-19 10:57:37,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-19 10:57:37,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:57:37,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:57:37,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 10:57:37,669 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:57:37,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:57:37,670 INFO L85 PathProgramCache]: Analyzing trace with hash -927055644, now seen corresponding path program 1 times [2022-07-19 10:57:37,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:57:37,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057392666] [2022-07-19 10:57:37,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:57:37,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:57:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:57:37,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:57:37,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:57:37,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057392666] [2022-07-19 10:57:37,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057392666] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:57:37,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:57:37,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:57:37,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952023220] [2022-07-19 10:57:37,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:57:37,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:57:37,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:57:37,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:57:37,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,690 INFO L87 Difference]: Start difference. First operand 205 states and 335 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:57:37,714 INFO L93 Difference]: Finished difference Result 373 states and 617 transitions. [2022-07-19 10:57:37,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:57:37,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-19 10:57:37,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:57:37,715 INFO L225 Difference]: With dead ends: 373 [2022-07-19 10:57:37,716 INFO L226 Difference]: Without dead ends: 371 [2022-07-19 10:57:37,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,717 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 29 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:57:37,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 97 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:57:37,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-07-19 10:57:37,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 289. [2022-07-19 10:57:37,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.6076388888888888) internal successors, (463), 288 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 463 transitions. [2022-07-19 10:57:37,732 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 463 transitions. Word has length 18 [2022-07-19 10:57:37,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:57:37,732 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 463 transitions. [2022-07-19 10:57:37,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,732 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 463 transitions. [2022-07-19 10:57:37,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-19 10:57:37,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:57:37,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:57:37,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 10:57:37,734 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:57:37,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:57:37,734 INFO L85 PathProgramCache]: Analyzing trace with hash -225991066, now seen corresponding path program 1 times [2022-07-19 10:57:37,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:57:37,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128070700] [2022-07-19 10:57:37,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:57:37,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:57:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:57:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:57:37,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:57:37,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128070700] [2022-07-19 10:57:37,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128070700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:57:37,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:57:37,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:57:37,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143148357] [2022-07-19 10:57:37,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:57:37,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:57:37,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:57:37,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:57:37,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,762 INFO L87 Difference]: Start difference. First operand 289 states and 463 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:57:37,774 INFO L93 Difference]: Finished difference Result 677 states and 1089 transitions. [2022-07-19 10:57:37,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:57:37,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-19 10:57:37,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:57:37,775 INFO L225 Difference]: With dead ends: 677 [2022-07-19 10:57:37,776 INFO L226 Difference]: Without dead ends: 395 [2022-07-19 10:57:37,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,777 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 35 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:57:37,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 118 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:57:37,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-07-19 10:57:37,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 393. [2022-07-19 10:57:37,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 1.5790816326530612) internal successors, (619), 392 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 619 transitions. [2022-07-19 10:57:37,786 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 619 transitions. Word has length 18 [2022-07-19 10:57:37,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:57:37,786 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 619 transitions. [2022-07-19 10:57:37,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,786 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 619 transitions. [2022-07-19 10:57:37,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-19 10:57:37,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:57:37,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:57:37,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 10:57:37,788 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:57:37,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:57:37,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1326261127, now seen corresponding path program 1 times [2022-07-19 10:57:37,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:57:37,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261448988] [2022-07-19 10:57:37,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:57:37,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:57:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:57:37,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:57:37,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:57:37,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261448988] [2022-07-19 10:57:37,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261448988] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:57:37,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:57:37,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:57:37,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725845416] [2022-07-19 10:57:37,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:57:37,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:57:37,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:57:37,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:57:37,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,816 INFO L87 Difference]: Start difference. First operand 393 states and 619 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:57:37,834 INFO L93 Difference]: Finished difference Result 597 states and 937 transitions. [2022-07-19 10:57:37,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:57:37,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-19 10:57:37,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:57:37,835 INFO L225 Difference]: With dead ends: 597 [2022-07-19 10:57:37,835 INFO L226 Difference]: Without dead ends: 407 [2022-07-19 10:57:37,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,836 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 37 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:57:37,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 116 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:57:37,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-07-19 10:57:37,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 405. [2022-07-19 10:57:37,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 1.551980198019802) internal successors, (627), 404 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 627 transitions. [2022-07-19 10:57:37,844 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 627 transitions. Word has length 19 [2022-07-19 10:57:37,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:57:37,844 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 627 transitions. [2022-07-19 10:57:37,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,844 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 627 transitions. [2022-07-19 10:57:37,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-19 10:57:37,845 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:57:37,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:57:37,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 10:57:37,845 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:57:37,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:57:37,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1584426565, now seen corresponding path program 1 times [2022-07-19 10:57:37,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:57:37,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377242827] [2022-07-19 10:57:37,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:57:37,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:57:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:57:37,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:57:37,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:57:37,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377242827] [2022-07-19 10:57:37,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377242827] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:57:37,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:57:37,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:57:37,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530515617] [2022-07-19 10:57:37,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:57:37,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:57:37,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:57:37,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:57:37,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,879 INFO L87 Difference]: Start difference. First operand 405 states and 627 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:57:37,889 INFO L93 Difference]: Finished difference Result 713 states and 1117 transitions. [2022-07-19 10:57:37,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:57:37,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-19 10:57:37,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:57:37,891 INFO L225 Difference]: With dead ends: 713 [2022-07-19 10:57:37,891 INFO L226 Difference]: Without dead ends: 711 [2022-07-19 10:57:37,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,892 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 26 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:57:37,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 95 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:57:37,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2022-07-19 10:57:37,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 581. [2022-07-19 10:57:37,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 580 states have (on average 1.5086206896551724) internal successors, (875), 580 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 875 transitions. [2022-07-19 10:57:37,909 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 875 transitions. Word has length 19 [2022-07-19 10:57:37,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:57:37,909 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 875 transitions. [2022-07-19 10:57:37,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,909 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 875 transitions. [2022-07-19 10:57:37,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-19 10:57:37,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:57:37,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:57:37,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 10:57:37,911 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:57:37,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:57:37,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2009476153, now seen corresponding path program 1 times [2022-07-19 10:57:37,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:57:37,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853407055] [2022-07-19 10:57:37,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:57:37,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:57:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:57:37,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:57:37,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:57:37,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853407055] [2022-07-19 10:57:37,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853407055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:57:37,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:57:37,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:57:37,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98236208] [2022-07-19 10:57:37,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:57:37,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:57:37,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:57:37,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:57:37,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,949 INFO L87 Difference]: Start difference. First operand 581 states and 875 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:57:37,967 INFO L93 Difference]: Finished difference Result 1337 states and 2013 transitions. [2022-07-19 10:57:37,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:57:37,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-19 10:57:37,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:57:37,970 INFO L225 Difference]: With dead ends: 1337 [2022-07-19 10:57:37,970 INFO L226 Difference]: Without dead ends: 775 [2022-07-19 10:57:37,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:37,972 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 34 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:57:37,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 119 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:57:37,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-07-19 10:57:37,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 773. [2022-07-19 10:57:37,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 772 states have (on average 1.4753886010362693) internal successors, (1139), 772 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1139 transitions. [2022-07-19 10:57:37,986 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1139 transitions. Word has length 19 [2022-07-19 10:57:37,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:57:37,986 INFO L495 AbstractCegarLoop]: Abstraction has 773 states and 1139 transitions. [2022-07-19 10:57:37,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:37,986 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1139 transitions. [2022-07-19 10:57:37,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-19 10:57:37,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:57:37,988 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] [2022-07-19 10:57:37,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 10:57:37,988 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:57:37,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:57:37,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1872798619, now seen corresponding path program 1 times [2022-07-19 10:57:37,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:57:37,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952325833] [2022-07-19 10:57:37,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:57:37,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:57:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:57:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:57:38,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:57:38,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952325833] [2022-07-19 10:57:38,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952325833] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:57:38,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:57:38,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:57:38,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670960431] [2022-07-19 10:57:38,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:57:38,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:57:38,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:57:38,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:57:38,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:38,024 INFO L87 Difference]: Start difference. First operand 773 states and 1139 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:57:38,043 INFO L93 Difference]: Finished difference Result 1161 states and 1701 transitions. [2022-07-19 10:57:38,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:57:38,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-19 10:57:38,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:57:38,045 INFO L225 Difference]: With dead ends: 1161 [2022-07-19 10:57:38,046 INFO L226 Difference]: Without dead ends: 791 [2022-07-19 10:57:38,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:38,047 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 36 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:57:38,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 112 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:57:38,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2022-07-19 10:57:38,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 789. [2022-07-19 10:57:38,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 788 states have (on average 1.4454314720812182) internal successors, (1139), 788 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1139 transitions. [2022-07-19 10:57:38,062 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1139 transitions. Word has length 20 [2022-07-19 10:57:38,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:57:38,064 INFO L495 AbstractCegarLoop]: Abstraction has 789 states and 1139 transitions. [2022-07-19 10:57:38,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,064 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1139 transitions. [2022-07-19 10:57:38,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-19 10:57:38,066 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:57:38,066 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] [2022-07-19 10:57:38,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 10:57:38,066 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:57:38,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:57:38,066 INFO L85 PathProgramCache]: Analyzing trace with hash 2130964057, now seen corresponding path program 1 times [2022-07-19 10:57:38,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:57:38,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301106278] [2022-07-19 10:57:38,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:57:38,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:57:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:57:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:57:38,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:57:38,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301106278] [2022-07-19 10:57:38,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301106278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:57:38,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:57:38,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:57:38,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790888919] [2022-07-19 10:57:38,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:57:38,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:57:38,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:57:38,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:57:38,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:38,095 INFO L87 Difference]: Start difference. First operand 789 states and 1139 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:57:38,122 INFO L93 Difference]: Finished difference Result 1353 states and 1973 transitions. [2022-07-19 10:57:38,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:57:38,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-19 10:57:38,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:57:38,125 INFO L225 Difference]: With dead ends: 1353 [2022-07-19 10:57:38,125 INFO L226 Difference]: Without dead ends: 1351 [2022-07-19 10:57:38,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:38,139 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 23 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:57:38,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 93 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:57:38,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2022-07-19 10:57:38,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1157. [2022-07-19 10:57:38,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1156 states have (on average 1.4005190311418685) internal successors, (1619), 1156 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1619 transitions. [2022-07-19 10:57:38,178 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1619 transitions. Word has length 20 [2022-07-19 10:57:38,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:57:38,178 INFO L495 AbstractCegarLoop]: Abstraction has 1157 states and 1619 transitions. [2022-07-19 10:57:38,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1619 transitions. [2022-07-19 10:57:38,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-19 10:57:38,180 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:57:38,180 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] [2022-07-19 10:57:38,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 10:57:38,180 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:57:38,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:57:38,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1462938661, now seen corresponding path program 1 times [2022-07-19 10:57:38,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:57:38,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633552619] [2022-07-19 10:57:38,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:57:38,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:57:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:57:38,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:57:38,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:57:38,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633552619] [2022-07-19 10:57:38,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633552619] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:57:38,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:57:38,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:57:38,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721304634] [2022-07-19 10:57:38,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:57:38,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:57:38,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:57:38,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:57:38,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:38,195 INFO L87 Difference]: Start difference. First operand 1157 states and 1619 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:57:38,217 INFO L93 Difference]: Finished difference Result 2633 states and 3669 transitions. [2022-07-19 10:57:38,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:57:38,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-19 10:57:38,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:57:38,221 INFO L225 Difference]: With dead ends: 2633 [2022-07-19 10:57:38,221 INFO L226 Difference]: Without dead ends: 1511 [2022-07-19 10:57:38,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:38,222 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 33 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:57:38,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 120 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:57:38,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2022-07-19 10:57:38,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1509. [2022-07-19 10:57:38,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1508 states have (on average 1.360079575596817) internal successors, (2051), 1508 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2051 transitions. [2022-07-19 10:57:38,248 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2051 transitions. Word has length 20 [2022-07-19 10:57:38,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:57:38,249 INFO L495 AbstractCegarLoop]: Abstraction has 1509 states and 2051 transitions. [2022-07-19 10:57:38,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2051 transitions. [2022-07-19 10:57:38,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-19 10:57:38,250 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:57:38,250 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] [2022-07-19 10:57:38,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 10:57:38,251 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:57:38,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:57:38,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1635592028, now seen corresponding path program 1 times [2022-07-19 10:57:38,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:57:38,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023765695] [2022-07-19 10:57:38,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:57:38,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:57:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:57:38,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:57:38,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:57:38,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023765695] [2022-07-19 10:57:38,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023765695] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:57:38,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:57:38,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:57:38,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659287284] [2022-07-19 10:57:38,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:57:38,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:57:38,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:57:38,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:57:38,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:38,283 INFO L87 Difference]: Start difference. First operand 1509 states and 2051 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:57:38,304 INFO L93 Difference]: Finished difference Result 2265 states and 3061 transitions. [2022-07-19 10:57:38,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:57:38,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-07-19 10:57:38,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:57:38,307 INFO L225 Difference]: With dead ends: 2265 [2022-07-19 10:57:38,308 INFO L226 Difference]: Without dead ends: 1543 [2022-07-19 10:57:38,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:38,309 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 35 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:57:38,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 108 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:57:38,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2022-07-19 10:57:38,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1541. [2022-07-19 10:57:38,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1540 states have (on average 1.3318181818181818) internal successors, (2051), 1540 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2051 transitions. [2022-07-19 10:57:38,354 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2051 transitions. Word has length 21 [2022-07-19 10:57:38,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:57:38,355 INFO L495 AbstractCegarLoop]: Abstraction has 1541 states and 2051 transitions. [2022-07-19 10:57:38,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2051 transitions. [2022-07-19 10:57:38,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-19 10:57:38,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:57:38,357 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] [2022-07-19 10:57:38,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 10:57:38,357 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:57:38,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:57:38,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1893757466, now seen corresponding path program 1 times [2022-07-19 10:57:38,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:57:38,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933801027] [2022-07-19 10:57:38,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:57:38,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:57:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:57:38,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:57:38,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:57:38,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933801027] [2022-07-19 10:57:38,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933801027] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:57:38,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:57:38,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:57:38,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410191026] [2022-07-19 10:57:38,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:57:38,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:57:38,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:57:38,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:57:38,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:38,402 INFO L87 Difference]: Start difference. First operand 1541 states and 2051 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:57:38,433 INFO L93 Difference]: Finished difference Result 2569 states and 3429 transitions. [2022-07-19 10:57:38,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:57:38,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-07-19 10:57:38,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:57:38,439 INFO L225 Difference]: With dead ends: 2569 [2022-07-19 10:57:38,440 INFO L226 Difference]: Without dead ends: 2567 [2022-07-19 10:57:38,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:38,441 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 20 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:57:38,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 91 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:57:38,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2022-07-19 10:57:38,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2309. [2022-07-19 10:57:38,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 2308 states have (on average 1.290727902946274) internal successors, (2979), 2308 states have internal predecessors, (2979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 2979 transitions. [2022-07-19 10:57:38,482 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 2979 transitions. Word has length 21 [2022-07-19 10:57:38,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:57:38,483 INFO L495 AbstractCegarLoop]: Abstraction has 2309 states and 2979 transitions. [2022-07-19 10:57:38,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 2979 transitions. [2022-07-19 10:57:38,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-19 10:57:38,486 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:57:38,486 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] [2022-07-19 10:57:38,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 10:57:38,486 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:57:38,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:57:38,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1700145252, now seen corresponding path program 1 times [2022-07-19 10:57:38,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:57:38,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035990344] [2022-07-19 10:57:38,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:57:38,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:57:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:57:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:57:38,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:57:38,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035990344] [2022-07-19 10:57:38,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035990344] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:57:38,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:57:38,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:57:38,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809795010] [2022-07-19 10:57:38,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:57:38,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:57:38,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:57:38,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:57:38,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:38,507 INFO L87 Difference]: Start difference. First operand 2309 states and 2979 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:57:38,564 INFO L93 Difference]: Finished difference Result 5193 states and 6629 transitions. [2022-07-19 10:57:38,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:57:38,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-07-19 10:57:38,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:57:38,571 INFO L225 Difference]: With dead ends: 5193 [2022-07-19 10:57:38,571 INFO L226 Difference]: Without dead ends: 2951 [2022-07-19 10:57:38,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:38,575 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 32 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:57:38,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 121 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:57:38,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2022-07-19 10:57:38,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2949. [2022-07-19 10:57:38,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2948 states have (on average 1.2384667571234735) internal successors, (3651), 2948 states have internal predecessors, (3651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 3651 transitions. [2022-07-19 10:57:38,630 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 3651 transitions. Word has length 21 [2022-07-19 10:57:38,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:57:38,630 INFO L495 AbstractCegarLoop]: Abstraction has 2949 states and 3651 transitions. [2022-07-19 10:57:38,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,631 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 3651 transitions. [2022-07-19 10:57:38,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-19 10:57:38,633 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:57:38,634 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] [2022-07-19 10:57:38,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 10:57:38,634 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:57:38,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:57:38,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1422844656, now seen corresponding path program 1 times [2022-07-19 10:57:38,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:57:38,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625498751] [2022-07-19 10:57:38,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:57:38,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:57:38,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:57:38,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:57:38,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:57:38,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625498751] [2022-07-19 10:57:38,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625498751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:57:38,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:57:38,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:57:38,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515973439] [2022-07-19 10:57:38,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:57:38,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:57:38,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:57:38,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:57:38,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:38,656 INFO L87 Difference]: Start difference. First operand 2949 states and 3651 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:57:38,691 INFO L93 Difference]: Finished difference Result 4425 states and 5445 transitions. [2022-07-19 10:57:38,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:57:38,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-07-19 10:57:38,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:57:38,698 INFO L225 Difference]: With dead ends: 4425 [2022-07-19 10:57:38,698 INFO L226 Difference]: Without dead ends: 3015 [2022-07-19 10:57:38,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:38,701 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 34 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:57:38,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 104 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:57:38,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2022-07-19 10:57:38,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 3013. [2022-07-19 10:57:38,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3013 states, 3012 states have (on average 1.2121513944223108) internal successors, (3651), 3012 states have internal predecessors, (3651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 3651 transitions. [2022-07-19 10:57:38,774 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 3651 transitions. Word has length 22 [2022-07-19 10:57:38,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:57:38,774 INFO L495 AbstractCegarLoop]: Abstraction has 3013 states and 3651 transitions. [2022-07-19 10:57:38,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,775 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 3651 transitions. [2022-07-19 10:57:38,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-19 10:57:38,777 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:57:38,777 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] [2022-07-19 10:57:38,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 10:57:38,778 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:57:38,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:57:38,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1164679218, now seen corresponding path program 1 times [2022-07-19 10:57:38,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:57:38,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729532421] [2022-07-19 10:57:38,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:57:38,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:57:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:57:38,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:57:38,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:57:38,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729532421] [2022-07-19 10:57:38,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729532421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:57:38,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:57:38,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:57:38,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024827503] [2022-07-19 10:57:38,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:57:38,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:57:38,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:57:38,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:57:38,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:38,805 INFO L87 Difference]: Start difference. First operand 3013 states and 3651 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:57:38,846 INFO L93 Difference]: Finished difference Result 4871 states and 5828 transitions. [2022-07-19 10:57:38,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:57:38,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-07-19 10:57:38,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:57:38,857 INFO L225 Difference]: With dead ends: 4871 [2022-07-19 10:57:38,858 INFO L226 Difference]: Without dead ends: 4869 [2022-07-19 10:57:38,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:38,860 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 16 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:57:38,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 88 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:57:38,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4869 states. [2022-07-19 10:57:38,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4869 to 4613. [2022-07-19 10:57:38,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4613 states, 4612 states have (on average 1.180182133564614) internal successors, (5443), 4612 states have internal predecessors, (5443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4613 states to 4613 states and 5443 transitions. [2022-07-19 10:57:38,951 INFO L78 Accepts]: Start accepts. Automaton has 4613 states and 5443 transitions. Word has length 22 [2022-07-19 10:57:38,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:57:38,951 INFO L495 AbstractCegarLoop]: Abstraction has 4613 states and 5443 transitions. [2022-07-19 10:57:38,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:38,951 INFO L276 IsEmpty]: Start isEmpty. Operand 4613 states and 5443 transitions. [2022-07-19 10:57:38,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-19 10:57:38,955 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:57:38,955 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] [2022-07-19 10:57:38,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 10:57:38,956 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:57:38,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:57:38,956 INFO L85 PathProgramCache]: Analyzing trace with hash -463614640, now seen corresponding path program 1 times [2022-07-19 10:57:38,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:57:38,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257951955] [2022-07-19 10:57:38,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:57:38,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:57:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:57:38,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:57:38,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:57:38,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257951955] [2022-07-19 10:57:38,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257951955] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:57:38,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:57:38,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:57:38,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142566514] [2022-07-19 10:57:38,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:57:38,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:57:38,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:57:38,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:57:38,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:38,977 INFO L87 Difference]: Start difference. First operand 4613 states and 5443 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:39,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:57:39,045 INFO L93 Difference]: Finished difference Result 10245 states and 11843 transitions. [2022-07-19 10:57:39,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:57:39,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-07-19 10:57:39,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:57:39,046 INFO L225 Difference]: With dead ends: 10245 [2022-07-19 10:57:39,046 INFO L226 Difference]: Without dead ends: 0 [2022-07-19 10:57:39,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:57:39,055 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 30 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:57:39,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 120 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:57:39,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-19 10:57:39,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-19 10:57:39,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:39,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-19 10:57:39,055 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2022-07-19 10:57:39,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:57:39,055 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-19 10:57:39,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:57:39,056 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-19 10:57:39,056 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-19 10:57:39,058 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 10:57:39,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 10:57:39,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-19 10:57:39,067 INFO L899 garLoopResultBuilder]: For program point L93(line 93) no Hoare annotation was computed. [2022-07-19 10:57:39,067 INFO L899 garLoopResultBuilder]: For program point L118(line 118) no Hoare annotation was computed. [2022-07-19 10:57:39,067 INFO L899 garLoopResultBuilder]: For program point L102-1(lines 35 132) no Hoare annotation was computed. [2022-07-19 10:57:39,068 INFO L902 garLoopResultBuilder]: At program point L127-1(lines 35 132) the Hoare annotation is: true [2022-07-19 10:57:39,068 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-19 10:57:39,068 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-19 10:57:39,068 INFO L899 garLoopResultBuilder]: For program point L86-1(lines 35 132) no Hoare annotation was computed. [2022-07-19 10:57:39,069 INFO L899 garLoopResultBuilder]: For program point L78-1(lines 35 132) no Hoare annotation was computed. [2022-07-19 10:57:39,069 INFO L902 garLoopResultBuilder]: At program point L136(lines 6 137) the Hoare annotation is: true [2022-07-19 10:57:39,069 INFO L899 garLoopResultBuilder]: For program point L103(line 103) no Hoare annotation was computed. [2022-07-19 10:57:39,069 INFO L899 garLoopResultBuilder]: For program point L37(lines 37 39) no Hoare annotation was computed. [2022-07-19 10:57:39,069 INFO L899 garLoopResultBuilder]: For program point L70-1(lines 35 132) no Hoare annotation was computed. [2022-07-19 10:57:39,069 INFO L899 garLoopResultBuilder]: For program point L128(line 128) no Hoare annotation was computed. [2022-07-19 10:57:39,069 INFO L895 garLoopResultBuilder]: At program point L128-1(lines 7 137) the Hoare annotation is: false [2022-07-19 10:57:39,069 INFO L899 garLoopResultBuilder]: For program point L62-1(lines 35 132) no Hoare annotation was computed. [2022-07-19 10:57:39,069 INFO L899 garLoopResultBuilder]: For program point L112-1(lines 35 132) no Hoare annotation was computed. [2022-07-19 10:57:39,069 INFO L899 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2022-07-19 10:57:39,069 INFO L899 garLoopResultBuilder]: For program point L97-1(lines 35 132) no Hoare annotation was computed. [2022-07-19 10:57:39,070 INFO L899 garLoopResultBuilder]: For program point L122-1(lines 35 132) no Hoare annotation was computed. [2022-07-19 10:57:39,070 INFO L899 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2022-07-19 10:57:39,070 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-19 10:57:39,070 INFO L899 garLoopResultBuilder]: For program point L123(line 123) no Hoare annotation was computed. [2022-07-19 10:57:39,070 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 135) no Hoare annotation was computed. [2022-07-19 10:57:39,070 INFO L899 garLoopResultBuilder]: For program point L82-1(lines 35 132) no Hoare annotation was computed. [2022-07-19 10:57:39,070 INFO L899 garLoopResultBuilder]: For program point L107-1(lines 35 132) no Hoare annotation was computed. [2022-07-19 10:57:39,070 INFO L899 garLoopResultBuilder]: For program point L74-1(lines 35 132) no Hoare annotation was computed. [2022-07-19 10:57:39,070 INFO L899 garLoopResultBuilder]: For program point L66-1(lines 35 132) no Hoare annotation was computed. [2022-07-19 10:57:39,070 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-19 10:57:39,070 INFO L899 garLoopResultBuilder]: For program point L58(lines 58 60) no Hoare annotation was computed. [2022-07-19 10:57:39,070 INFO L899 garLoopResultBuilder]: For program point L58-2(lines 35 132) no Hoare annotation was computed. [2022-07-19 10:57:39,070 INFO L899 garLoopResultBuilder]: For program point L108(line 108) no Hoare annotation was computed. [2022-07-19 10:57:39,070 INFO L902 garLoopResultBuilder]: At program point L133(lines 7 137) the Hoare annotation is: true [2022-07-19 10:57:39,070 INFO L899 garLoopResultBuilder]: For program point L92-1(lines 35 132) no Hoare annotation was computed. [2022-07-19 10:57:39,070 INFO L899 garLoopResultBuilder]: For program point L117-1(lines 35 132) no Hoare annotation was computed. [2022-07-19 10:57:39,073 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:57:39,074 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 10:57:39,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 10:57:39 BoogieIcfgContainer [2022-07-19 10:57:39,081 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 10:57:39,081 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 10:57:39,081 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 10:57:39,081 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 10:57:39,082 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:57:36" (3/4) ... [2022-07-19 10:57:39,084 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 10:57:39,092 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-07-19 10:57:39,092 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-19 10:57:39,092 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 10:57:39,093 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 10:57:39,123 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 10:57:39,123 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 10:57:39,125 INFO L158 Benchmark]: Toolchain (without parser) took 2863.74ms. Allocated memory was 90.2MB in the beginning and 190.8MB in the end (delta: 100.7MB). Free memory was 57.1MB in the beginning and 73.9MB in the end (delta: -16.9MB). Peak memory consumption was 84.0MB. Max. memory is 16.1GB. [2022-07-19 10:57:39,125 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 90.2MB. Free memory was 46.1MB in the beginning and 46.0MB in the end (delta: 39.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 10:57:39,125 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.04ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 56.8MB in the beginning and 84.4MB in the end (delta: -27.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 10:57:39,125 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.64ms. Allocated memory is still 109.1MB. Free memory was 84.0MB in the beginning and 82.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 10:57:39,125 INFO L158 Benchmark]: Boogie Preprocessor took 28.85ms. Allocated memory is still 109.1MB. Free memory was 82.6MB in the beginning and 81.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 10:57:39,125 INFO L158 Benchmark]: RCFGBuilder took 243.54ms. Allocated memory is still 109.1MB. Free memory was 81.4MB in the beginning and 69.8MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 10:57:39,126 INFO L158 Benchmark]: TraceAbstraction took 2287.19ms. Allocated memory was 109.1MB in the beginning and 190.8MB in the end (delta: 81.8MB). Free memory was 69.3MB in the beginning and 77.1MB in the end (delta: -7.8MB). Peak memory consumption was 74.5MB. Max. memory is 16.1GB. [2022-07-19 10:57:39,126 INFO L158 Benchmark]: Witness Printer took 41.75ms. Allocated memory is still 190.8MB. Free memory was 77.1MB in the beginning and 73.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 10:57:39,127 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 90.2MB. Free memory was 46.1MB in the beginning and 46.0MB in the end (delta: 39.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 231.04ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 56.8MB in the beginning and 84.4MB in the end (delta: -27.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.64ms. Allocated memory is still 109.1MB. Free memory was 84.0MB in the beginning and 82.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.85ms. Allocated memory is still 109.1MB. Free memory was 82.6MB in the beginning and 81.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 243.54ms. Allocated memory is still 109.1MB. Free memory was 81.4MB in the beginning and 69.8MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2287.19ms. Allocated memory was 109.1MB in the beginning and 190.8MB in the end (delta: 81.8MB). Free memory was 69.3MB in the beginning and 77.1MB in the end (delta: -7.8MB). Peak memory consumption was 74.5MB. Max. memory is 16.1GB. * Witness Printer took 41.75ms. Allocated memory is still 190.8MB. Free memory was 77.1MB in the beginning and 73.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 135]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 720 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 720 mSDsluCounter, 2438 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 964 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 117 IncrementalHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 1474 mSDtfsCounter, 117 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4613occurred in iteration=21, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 22 MinimizatonAttempts, 1044 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 265 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 411 NumberOfCodeBlocks, 411 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 389 ConstructedInterpolants, 0 QuantifiedInterpolants, 805 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-19 10:57:39,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE