./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0515a0092ae60bee69c0826328a56fce70547e074096ceb561e2dff3da2ff25f --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:10:30,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:10:30,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:10:30,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:10:30,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:10:30,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:10:30,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:10:30,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:10:30,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:10:30,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:10:30,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:10:30,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:10:30,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:10:30,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:10:30,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:10:30,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:10:30,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:10:30,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:10:30,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:10:30,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:10:30,526 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:10:30,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:10:30,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:10:30,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:10:30,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:10:30,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:10:30,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:10:30,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:10:30,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:10:30,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:10:30,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:10:30,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:10:30,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:10:30,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:10:30,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:10:30,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:10:30,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:10:30,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:10:30,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:10:30,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:10:30,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:10:30,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:10:30,561 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:10:30,591 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:10:30,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:10:30,592 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:10:30,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:10:30,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:10:30,593 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:10:30,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:10:30,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:10:30,594 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:10:30,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:10:30,595 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:10:30,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:10:30,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:10:30,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:10:30,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:10:30,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:10:30,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:10:30,597 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:10:30,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:10:30,597 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:10:30,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:10:30,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:10:30,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:10:30,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:10:30,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:10:30,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:10:30,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:10:30,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:10:30,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:10:30,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:10:30,599 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:10:30,600 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:10:30,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:10:30,600 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0515a0092ae60bee69c0826328a56fce70547e074096ceb561e2dff3da2ff25f [2022-07-21 08:10:30,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:10:30,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:10:30,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:10:30,940 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:10:30,941 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:10:30,942 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-2.c [2022-07-21 08:10:31,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40503fc28/81e177780a16419b943afd695f3f224f/FLAG0223b3381 [2022-07-21 08:10:31,420 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:10:31,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-2.c [2022-07-21 08:10:31,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40503fc28/81e177780a16419b943afd695f3f224f/FLAG0223b3381 [2022-07-21 08:10:31,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40503fc28/81e177780a16419b943afd695f3f224f [2022-07-21 08:10:31,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:10:31,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:10:31,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:10:31,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:10:31,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:10:31,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:10:31" (1/1) ... [2022-07-21 08:10:31,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e701dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:31, skipping insertion in model container [2022-07-21 08:10:31,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:10:31" (1/1) ... [2022-07-21 08:10:31,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:10:31,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:10:31,995 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-2.c[911,924] [2022-07-21 08:10:32,097 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-2.c[8416,8429] [2022-07-21 08:10:32,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:10:32,181 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:10:32,191 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-2.c[911,924] [2022-07-21 08:10:32,217 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-2.c[8416,8429] [2022-07-21 08:10:32,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:10:32,295 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:10:32,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:32 WrapperNode [2022-07-21 08:10:32,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:10:32,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:10:32,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:10:32,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:10:32,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:32" (1/1) ... [2022-07-21 08:10:32,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:32" (1/1) ... [2022-07-21 08:10:32,372 INFO L137 Inliner]: procedures = 67, calls = 79, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 730 [2022-07-21 08:10:32,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:10:32,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:10:32,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:10:32,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:10:32,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:32" (1/1) ... [2022-07-21 08:10:32,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:32" (1/1) ... [2022-07-21 08:10:32,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:32" (1/1) ... [2022-07-21 08:10:32,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:32" (1/1) ... [2022-07-21 08:10:32,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:32" (1/1) ... [2022-07-21 08:10:32,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:32" (1/1) ... [2022-07-21 08:10:32,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:32" (1/1) ... [2022-07-21 08:10:32,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:10:32,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:10:32,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:10:32,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:10:32,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:32" (1/1) ... [2022-07-21 08:10:32,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:10:32,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:10:32,484 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) [2022-07-21 08:10:32,501 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 [2022-07-21 08:10:32,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:10:32,524 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 08:10:32,524 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 08:10:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-21 08:10:32,529 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-21 08:10:32,529 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-21 08:10:32,529 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-21 08:10:32,529 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-21 08:10:32,529 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-21 08:10:32,530 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-21 08:10:32,530 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-21 08:10:32,530 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-21 08:10:32,530 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-21 08:10:32,530 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-21 08:10:32,531 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-21 08:10:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-21 08:10:32,531 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-21 08:10:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-21 08:10:32,531 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-21 08:10:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-21 08:10:32,532 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-21 08:10:32,532 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-21 08:10:32,532 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-21 08:10:32,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:10:32,532 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-21 08:10:32,533 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-21 08:10:32,533 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-21 08:10:32,533 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-21 08:10:32,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:10:32,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:10:32,533 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-21 08:10:32,534 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-21 08:10:32,628 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:10:32,630 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:10:33,251 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-21 08:10:33,252 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-07-21 08:10:33,321 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:10:33,331 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:10:33,334 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-07-21 08:10:33,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:10:33 BoogieIcfgContainer [2022-07-21 08:10:33,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:10:33,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:10:33,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:10:33,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:10:33,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:10:31" (1/3) ... [2022-07-21 08:10:33,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71615f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:10:33, skipping insertion in model container [2022-07-21 08:10:33,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:32" (2/3) ... [2022-07-21 08:10:33,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71615f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:10:33, skipping insertion in model container [2022-07-21 08:10:33,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:10:33" (3/3) ... [2022-07-21 08:10:33,344 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.06.cil-2.c [2022-07-21 08:10:33,357 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:10:33,357 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:10:33,418 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:10:33,426 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@48629353, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6eaee91f [2022-07-21 08:10:33,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:10:33,434 INFO L276 IsEmpty]: Start isEmpty. Operand has 349 states, 296 states have (on average 1.6047297297297298) internal successors, (475), 302 states have internal predecessors, (475), 36 states have call successors, (36), 14 states have call predecessors, (36), 14 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2022-07-21 08:10:33,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:10:33,449 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:33,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:10:33,451 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:33,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:33,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1893731304, now seen corresponding path program 1 times [2022-07-21 08:10:33,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:33,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394470163] [2022-07-21 08:10:33,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:33,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:33,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:33,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:33,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:33,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:33,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:10:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:33,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:10:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:33,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:10:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:33,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:33,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:33,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394470163] [2022-07-21 08:10:33,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394470163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:33,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:33,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:10:33,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512002699] [2022-07-21 08:10:33,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:33,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:10:33,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:33,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:10:33,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:10:33,792 INFO L87 Difference]: Start difference. First operand has 349 states, 296 states have (on average 1.6047297297297298) internal successors, (475), 302 states have internal predecessors, (475), 36 states have call successors, (36), 14 states have call predecessors, (36), 14 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:10:34,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:34,869 INFO L93 Difference]: Finished difference Result 827 states and 1293 transitions. [2022-07-21 08:10:34,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:10:34,872 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-21 08:10:34,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:34,893 INFO L225 Difference]: With dead ends: 827 [2022-07-21 08:10:34,894 INFO L226 Difference]: Without dead ends: 490 [2022-07-21 08:10:34,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:10:34,907 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 921 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:34,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 1725 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:10:34,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-07-21 08:10:34,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 451. [2022-07-21 08:10:34,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 378 states have (on average 1.492063492063492) internal successors, (564), 384 states have internal predecessors, (564), 49 states have call successors, (49), 21 states have call predecessors, (49), 22 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-07-21 08:10:34,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 665 transitions. [2022-07-21 08:10:34,982 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 665 transitions. Word has length 65 [2022-07-21 08:10:34,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:34,983 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 665 transitions. [2022-07-21 08:10:34,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:10:34,983 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 665 transitions. [2022-07-21 08:10:34,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:10:34,987 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:34,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:10:34,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:10:34,988 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:34,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:34,989 INFO L85 PathProgramCache]: Analyzing trace with hash -214842664, now seen corresponding path program 1 times [2022-07-21 08:10:34,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:34,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431307822] [2022-07-21 08:10:34,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:34,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:35,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:10:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:10:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:10:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:35,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:35,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431307822] [2022-07-21 08:10:35,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431307822] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:35,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:35,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:10:35,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295344892] [2022-07-21 08:10:35,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:35,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:10:35,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:35,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:10:35,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:10:35,136 INFO L87 Difference]: Start difference. First operand 451 states and 665 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:10:36,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:36,135 INFO L93 Difference]: Finished difference Result 848 states and 1231 transitions. [2022-07-21 08:10:36,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:10:36,136 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-21 08:10:36,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:36,141 INFO L225 Difference]: With dead ends: 848 [2022-07-21 08:10:36,141 INFO L226 Difference]: Without dead ends: 639 [2022-07-21 08:10:36,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:10:36,143 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 1235 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:36,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1263 Valid, 1800 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:10:36,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-07-21 08:10:36,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 563. [2022-07-21 08:10:36,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 468 states have (on average 1.4743589743589745) internal successors, (690), 476 states have internal predecessors, (690), 62 states have call successors, (62), 28 states have call predecessors, (62), 31 states have return successors, (73), 62 states have call predecessors, (73), 60 states have call successors, (73) [2022-07-21 08:10:36,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 825 transitions. [2022-07-21 08:10:36,192 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 825 transitions. Word has length 65 [2022-07-21 08:10:36,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:36,192 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 825 transitions. [2022-07-21 08:10:36,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:10:36,193 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 825 transitions. [2022-07-21 08:10:36,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:10:36,195 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:36,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:10:36,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:10:36,196 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:36,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:36,197 INFO L85 PathProgramCache]: Analyzing trace with hash 2051538522, now seen corresponding path program 1 times [2022-07-21 08:10:36,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:36,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487083587] [2022-07-21 08:10:36,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:36,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:36,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:36,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:36,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:36,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:36,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:10:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:36,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:10:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:36,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:10:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:36,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:36,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:36,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487083587] [2022-07-21 08:10:36,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487083587] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:36,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:36,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:10:36,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472024268] [2022-07-21 08:10:36,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:36,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:10:36,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:36,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:10:36,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:10:36,355 INFO L87 Difference]: Start difference. First operand 563 states and 825 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-21 08:10:38,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:38,174 INFO L93 Difference]: Finished difference Result 2109 states and 3023 transitions. [2022-07-21 08:10:38,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 08:10:38,175 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-07-21 08:10:38,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:38,184 INFO L225 Difference]: With dead ends: 2109 [2022-07-21 08:10:38,185 INFO L226 Difference]: Without dead ends: 1776 [2022-07-21 08:10:38,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-21 08:10:38,189 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 2796 mSDsluCounter, 1789 mSDsCounter, 0 mSdLazyCounter, 1759 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2814 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 2393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 1759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:38,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2814 Valid, 2430 Invalid, 2393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 1759 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 08:10:38,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2022-07-21 08:10:38,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1616. [2022-07-21 08:10:38,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1316 states have (on average 1.3936170212765957) internal successors, (1834), 1339 states have internal predecessors, (1834), 172 states have call successors, (172), 111 states have call predecessors, (172), 126 states have return successors, (206), 168 states have call predecessors, (206), 170 states have call successors, (206) [2022-07-21 08:10:38,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2212 transitions. [2022-07-21 08:10:38,306 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2212 transitions. Word has length 65 [2022-07-21 08:10:38,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:38,307 INFO L495 AbstractCegarLoop]: Abstraction has 1616 states and 2212 transitions. [2022-07-21 08:10:38,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-21 08:10:38,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2212 transitions. [2022-07-21 08:10:38,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 08:10:38,309 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:38,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:10:38,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:10:38,310 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:38,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:38,310 INFO L85 PathProgramCache]: Analyzing trace with hash 209581264, now seen corresponding path program 1 times [2022-07-21 08:10:38,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:38,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148160707] [2022-07-21 08:10:38,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:38,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:38,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:38,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:38,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:38,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:38,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:10:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:38,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 08:10:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:38,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:10:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:38,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:38,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:38,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148160707] [2022-07-21 08:10:38,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148160707] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:38,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:38,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:10:38,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013218356] [2022-07-21 08:10:38,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:38,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:10:38,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:38,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:10:38,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:10:38,436 INFO L87 Difference]: Start difference. First operand 1616 states and 2212 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-21 08:10:40,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:40,273 INFO L93 Difference]: Finished difference Result 5140 states and 7094 transitions. [2022-07-21 08:10:40,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 08:10:40,273 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-07-21 08:10:40,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:40,282 INFO L225 Difference]: With dead ends: 5140 [2022-07-21 08:10:40,283 INFO L226 Difference]: Without dead ends: 2021 [2022-07-21 08:10:40,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-21 08:10:40,291 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 2839 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2857 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 2334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:40,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2857 Valid, 2478 Invalid, 2334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 08:10:40,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2022-07-21 08:10:40,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 1817. [2022-07-21 08:10:40,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1447 states have (on average 1.3503800967519004) internal successors, (1954), 1472 states have internal predecessors, (1954), 212 states have call successors, (212), 139 states have call predecessors, (212), 156 states have return successors, (250), 208 states have call predecessors, (250), 210 states have call successors, (250) [2022-07-21 08:10:40,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 2416 transitions. [2022-07-21 08:10:40,388 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 2416 transitions. Word has length 66 [2022-07-21 08:10:40,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:40,389 INFO L495 AbstractCegarLoop]: Abstraction has 1817 states and 2416 transitions. [2022-07-21 08:10:40,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-21 08:10:40,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 2416 transitions. [2022-07-21 08:10:40,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 08:10:40,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:40,392 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:10:40,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:10:40,393 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:40,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:40,393 INFO L85 PathProgramCache]: Analyzing trace with hash 149517079, now seen corresponding path program 1 times [2022-07-21 08:10:40,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:40,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405140841] [2022-07-21 08:10:40,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:40,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:40,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:40,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:40,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:40,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:40,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:10:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:40,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 08:10:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:40,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:10:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:40,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 08:10:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:40,537 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 08:10:40,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:40,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405140841] [2022-07-21 08:10:40,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405140841] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:40,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:40,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:10:40,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866738767] [2022-07-21 08:10:40,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:40,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:10:40,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:40,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:10:40,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:10:40,540 INFO L87 Difference]: Start difference. First operand 1817 states and 2416 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:10:41,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:41,461 INFO L93 Difference]: Finished difference Result 3640 states and 4857 transitions. [2022-07-21 08:10:41,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:10:41,462 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2022-07-21 08:10:41,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:41,473 INFO L225 Difference]: With dead ends: 3640 [2022-07-21 08:10:41,473 INFO L226 Difference]: Without dead ends: 2059 [2022-07-21 08:10:41,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:10:41,480 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 417 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 2165 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:41,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 2165 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:10:41,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2022-07-21 08:10:41,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 1877. [2022-07-21 08:10:41,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1877 states, 1495 states have (on average 1.3351170568561872) internal successors, (1996), 1520 states have internal predecessors, (1996), 212 states have call successors, (212), 139 states have call predecessors, (212), 168 states have return successors, (262), 220 states have call predecessors, (262), 210 states have call successors, (262) [2022-07-21 08:10:41,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 2470 transitions. [2022-07-21 08:10:41,573 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 2470 transitions. Word has length 91 [2022-07-21 08:10:41,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:41,574 INFO L495 AbstractCegarLoop]: Abstraction has 1877 states and 2470 transitions. [2022-07-21 08:10:41,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:10:41,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 2470 transitions. [2022-07-21 08:10:41,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 08:10:41,579 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:41,579 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:10:41,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:10:41,580 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:41,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:41,580 INFO L85 PathProgramCache]: Analyzing trace with hash 593417753, now seen corresponding path program 1 times [2022-07-21 08:10:41,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:41,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187893919] [2022-07-21 08:10:41,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:41,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:41,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:41,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:41,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:41,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:41,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:10:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:41,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 08:10:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:41,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:10:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:41,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 08:10:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 08:10:41,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:41,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187893919] [2022-07-21 08:10:41,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187893919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:41,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:41,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:10:41,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461411550] [2022-07-21 08:10:41,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:41,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:10:41,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:41,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:10:41,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:10:41,702 INFO L87 Difference]: Start difference. First operand 1877 states and 2470 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:10:42,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:42,690 INFO L93 Difference]: Finished difference Result 3437 states and 4521 transitions. [2022-07-21 08:10:42,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 08:10:42,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-21 08:10:42,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:42,703 INFO L225 Difference]: With dead ends: 3437 [2022-07-21 08:10:42,703 INFO L226 Difference]: Without dead ends: 2029 [2022-07-21 08:10:42,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-07-21 08:10:42,713 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 990 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:42,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 1784 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:10:42,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2022-07-21 08:10:42,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1661. [2022-07-21 08:10:42,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1331 states have (on average 1.3388429752066116) internal successors, (1782), 1351 states have internal predecessors, (1782), 184 states have call successors, (184), 120 states have call predecessors, (184), 144 states have return successors, (223), 191 states have call predecessors, (223), 182 states have call successors, (223) [2022-07-21 08:10:42,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2189 transitions. [2022-07-21 08:10:42,817 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2189 transitions. Word has length 91 [2022-07-21 08:10:42,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:42,817 INFO L495 AbstractCegarLoop]: Abstraction has 1661 states and 2189 transitions. [2022-07-21 08:10:42,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:10:42,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2189 transitions. [2022-07-21 08:10:42,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 08:10:42,819 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:42,819 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:10:42,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:10:42,820 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:42,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:42,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1762387497, now seen corresponding path program 1 times [2022-07-21 08:10:42,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:42,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236278009] [2022-07-21 08:10:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:42,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:42,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:42,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:42,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:42,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:42,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:10:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:42,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 08:10:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:42,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:10:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:42,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 08:10:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:42,916 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:10:42,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:42,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236278009] [2022-07-21 08:10:42,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236278009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:42,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:42,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:42,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370975740] [2022-07-21 08:10:42,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:42,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:42,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:42,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:42,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:42,919 INFO L87 Difference]: Start difference. First operand 1661 states and 2189 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-21 08:10:43,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:43,447 INFO L93 Difference]: Finished difference Result 4803 states and 6357 transitions. [2022-07-21 08:10:43,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:10:43,447 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-07-21 08:10:43,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:43,466 INFO L225 Difference]: With dead ends: 4803 [2022-07-21 08:10:43,466 INFO L226 Difference]: Without dead ends: 3379 [2022-07-21 08:10:43,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:10:43,474 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 915 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:43,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 1534 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:10:43,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3379 states. [2022-07-21 08:10:43,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3379 to 3085. [2022-07-21 08:10:43,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3085 states, 2444 states have (on average 1.3019639934533551) internal successors, (3182), 2493 states have internal predecessors, (3182), 345 states have call successors, (345), 233 states have call predecessors, (345), 294 states have return successors, (497), 361 states have call predecessors, (497), 343 states have call successors, (497) [2022-07-21 08:10:43,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3085 states to 3085 states and 4024 transitions. [2022-07-21 08:10:43,666 INFO L78 Accepts]: Start accepts. Automaton has 3085 states and 4024 transitions. Word has length 91 [2022-07-21 08:10:43,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:43,666 INFO L495 AbstractCegarLoop]: Abstraction has 3085 states and 4024 transitions. [2022-07-21 08:10:43,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-21 08:10:43,667 INFO L276 IsEmpty]: Start isEmpty. Operand 3085 states and 4024 transitions. [2022-07-21 08:10:43,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 08:10:43,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:43,670 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:10:43,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:10:43,670 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:43,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:43,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1474741721, now seen corresponding path program 1 times [2022-07-21 08:10:43,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:43,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415266045] [2022-07-21 08:10:43,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:43,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:10:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 08:10:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:10:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 08:10:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 08:10:43,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:43,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415266045] [2022-07-21 08:10:43,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415266045] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:43,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:43,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:10:43,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273465281] [2022-07-21 08:10:43,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:43,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:10:43,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:43,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:10:43,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:10:43,753 INFO L87 Difference]: Start difference. First operand 3085 states and 4024 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:10:44,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:44,214 INFO L93 Difference]: Finished difference Result 4656 states and 6024 transitions. [2022-07-21 08:10:44,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 08:10:44,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-21 08:10:44,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:44,224 INFO L225 Difference]: With dead ends: 4656 [2022-07-21 08:10:44,224 INFO L226 Difference]: Without dead ends: 1808 [2022-07-21 08:10:44,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:10:44,232 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 728 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:44,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 1094 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:10:44,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2022-07-21 08:10:44,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1661. [2022-07-21 08:10:44,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1331 states have (on average 1.3110443275732533) internal successors, (1745), 1351 states have internal predecessors, (1745), 184 states have call successors, (184), 120 states have call predecessors, (184), 144 states have return successors, (223), 191 states have call predecessors, (223), 182 states have call successors, (223) [2022-07-21 08:10:44,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2152 transitions. [2022-07-21 08:10:44,329 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2152 transitions. Word has length 91 [2022-07-21 08:10:44,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:44,330 INFO L495 AbstractCegarLoop]: Abstraction has 1661 states and 2152 transitions. [2022-07-21 08:10:44,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:10:44,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2152 transitions. [2022-07-21 08:10:44,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-21 08:10:44,331 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:44,332 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:10:44,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:10:44,332 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:44,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:44,333 INFO L85 PathProgramCache]: Analyzing trace with hash 818403522, now seen corresponding path program 1 times [2022-07-21 08:10:44,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:44,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090028160] [2022-07-21 08:10:44,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:44,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:10:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 08:10:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:10:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 08:10:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,420 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:10:44,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:44,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090028160] [2022-07-21 08:10:44,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090028160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:44,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:44,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:10:44,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798825852] [2022-07-21 08:10:44,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:44,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:10:44,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:44,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:10:44,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:10:44,423 INFO L87 Difference]: Start difference. First operand 1661 states and 2152 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 08:10:45,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:45,711 INFO L93 Difference]: Finished difference Result 4597 states and 5956 transitions. [2022-07-21 08:10:45,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 08:10:45,711 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2022-07-21 08:10:45,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:45,727 INFO L225 Difference]: With dead ends: 4597 [2022-07-21 08:10:45,728 INFO L226 Difference]: Without dead ends: 3173 [2022-07-21 08:10:45,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-21 08:10:45,734 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 1602 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1639 SdHoareTripleChecker+Valid, 1856 SdHoareTripleChecker+Invalid, 1625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:45,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1639 Valid, 1856 Invalid, 1625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 08:10:45,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2022-07-21 08:10:45,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 3011. [2022-07-21 08:10:45,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3011 states, 2359 states have (on average 1.2577363289529462) internal successors, (2967), 2401 states have internal predecessors, (2967), 356 states have call successors, (356), 227 states have call predecessors, (356), 294 states have return successors, (500), 385 states have call predecessors, (500), 354 states have call successors, (500) [2022-07-21 08:10:45,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 3823 transitions. [2022-07-21 08:10:45,917 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 3823 transitions. Word has length 92 [2022-07-21 08:10:45,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:45,918 INFO L495 AbstractCegarLoop]: Abstraction has 3011 states and 3823 transitions. [2022-07-21 08:10:45,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 08:10:45,918 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 3823 transitions. [2022-07-21 08:10:45,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 08:10:45,920 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:45,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:10:45,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:10:45,921 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:45,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:45,922 INFO L85 PathProgramCache]: Analyzing trace with hash 232043999, now seen corresponding path program 1 times [2022-07-21 08:10:45,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:45,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431089659] [2022-07-21 08:10:45,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:45,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:45,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:45,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 08:10:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:45,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 08:10:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:45,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 08:10:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:45,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 08:10:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:45,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:45,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:45,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431089659] [2022-07-21 08:10:45,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431089659] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:45,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:45,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:10:45,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011452610] [2022-07-21 08:10:45,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:45,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:10:45,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:45,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:10:45,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:10:46,000 INFO L87 Difference]: Start difference. First operand 3011 states and 3823 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:46,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:46,941 INFO L93 Difference]: Finished difference Result 3305 states and 4289 transitions. [2022-07-21 08:10:46,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:10:46,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-21 08:10:46,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:46,957 INFO L225 Difference]: With dead ends: 3305 [2022-07-21 08:10:46,957 INFO L226 Difference]: Without dead ends: 3087 [2022-07-21 08:10:46,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:10:46,960 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 691 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:46,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 950 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 08:10:46,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3087 states. [2022-07-21 08:10:47,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3087 to 3011. [2022-07-21 08:10:47,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3011 states, 2359 states have (on average 1.2573124205171682) internal successors, (2966), 2401 states have internal predecessors, (2966), 356 states have call successors, (356), 227 states have call predecessors, (356), 294 states have return successors, (500), 385 states have call predecessors, (500), 354 states have call successors, (500) [2022-07-21 08:10:47,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 3822 transitions. [2022-07-21 08:10:47,166 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 3822 transitions. Word has length 112 [2022-07-21 08:10:47,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:47,166 INFO L495 AbstractCegarLoop]: Abstraction has 3011 states and 3822 transitions. [2022-07-21 08:10:47,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:47,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 3822 transitions. [2022-07-21 08:10:47,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 08:10:47,169 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:47,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:10:47,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:10:47,170 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:47,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:47,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1539186397, now seen corresponding path program 1 times [2022-07-21 08:10:47,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:47,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305231272] [2022-07-21 08:10:47,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:47,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:47,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:47,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 08:10:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:47,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 08:10:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:47,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 08:10:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:47,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 08:10:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:47,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:47,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:47,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305231272] [2022-07-21 08:10:47,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305231272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:47,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:47,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:47,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612963951] [2022-07-21 08:10:47,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:47,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:47,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:47,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:47,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:47,296 INFO L87 Difference]: Start difference. First operand 3011 states and 3822 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:49,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:49,405 INFO L93 Difference]: Finished difference Result 3608 states and 4778 transitions. [2022-07-21 08:10:49,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:10:49,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-21 08:10:49,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:49,422 INFO L225 Difference]: With dead ends: 3608 [2022-07-21 08:10:49,422 INFO L226 Difference]: Without dead ends: 3395 [2022-07-21 08:10:49,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:10:49,427 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 1057 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 2077 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 2066 SdHoareTripleChecker+Invalid, 2185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:49,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 2066 Invalid, 2185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2077 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 08:10:49,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3395 states. [2022-07-21 08:10:49,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3395 to 3234. [2022-07-21 08:10:49,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 2557 states have (on average 1.281579976535002) internal successors, (3277), 2601 states have internal predecessors, (3277), 373 states have call successors, (373), 233 states have call predecessors, (373), 302 states have return successors, (524), 403 states have call predecessors, (524), 371 states have call successors, (524) [2022-07-21 08:10:49,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 4174 transitions. [2022-07-21 08:10:49,653 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 4174 transitions. Word has length 112 [2022-07-21 08:10:49,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:49,655 INFO L495 AbstractCegarLoop]: Abstraction has 3234 states and 4174 transitions. [2022-07-21 08:10:49,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:49,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 4174 transitions. [2022-07-21 08:10:49,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 08:10:49,658 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:49,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:10:49,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:10:49,659 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:49,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:49,659 INFO L85 PathProgramCache]: Analyzing trace with hash -79788517, now seen corresponding path program 1 times [2022-07-21 08:10:49,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:49,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157300440] [2022-07-21 08:10:49,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:49,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:49,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:49,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 08:10:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:49,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 08:10:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:49,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 08:10:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:49,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 08:10:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:49,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:49,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:49,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157300440] [2022-07-21 08:10:49,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157300440] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:49,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:49,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:49,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742426189] [2022-07-21 08:10:49,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:49,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:49,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:49,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:49,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:49,768 INFO L87 Difference]: Start difference. First operand 3234 states and 4174 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:51,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:51,813 INFO L93 Difference]: Finished difference Result 4367 states and 5970 transitions. [2022-07-21 08:10:51,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:10:51,814 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-21 08:10:51,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:51,840 INFO L225 Difference]: With dead ends: 4367 [2022-07-21 08:10:51,841 INFO L226 Difference]: Without dead ends: 3933 [2022-07-21 08:10:51,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:10:51,847 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 1059 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 2055 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1973 SdHoareTripleChecker+Invalid, 2171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:51,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 1973 Invalid, 2171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2055 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 08:10:51,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3933 states. [2022-07-21 08:10:52,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3933 to 3644. [2022-07-21 08:10:52,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 2923 states have (on average 1.3137187820732124) internal successors, (3840), 2969 states have internal predecessors, (3840), 403 states have call successors, (403), 245 states have call predecessors, (403), 316 states have return successors, (564), 435 states have call predecessors, (564), 401 states have call successors, (564) [2022-07-21 08:10:52,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 4807 transitions. [2022-07-21 08:10:52,091 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 4807 transitions. Word has length 112 [2022-07-21 08:10:52,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:52,092 INFO L495 AbstractCegarLoop]: Abstraction has 3644 states and 4807 transitions. [2022-07-21 08:10:52,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:52,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 4807 transitions. [2022-07-21 08:10:52,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 08:10:52,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:52,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:10:52,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:10:52,097 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:52,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:52,097 INFO L85 PathProgramCache]: Analyzing trace with hash -963297507, now seen corresponding path program 1 times [2022-07-21 08:10:52,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:52,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908693515] [2022-07-21 08:10:52,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:52,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:52,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:52,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 08:10:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:52,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 08:10:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:52,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 08:10:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:52,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 08:10:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:52,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:52,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:52,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908693515] [2022-07-21 08:10:52,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908693515] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:52,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:52,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:52,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146468422] [2022-07-21 08:10:52,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:52,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:52,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:52,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:52,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:52,200 INFO L87 Difference]: Start difference. First operand 3644 states and 4807 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:54,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:54,116 INFO L93 Difference]: Finished difference Result 5851 states and 8295 transitions. [2022-07-21 08:10:54,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:10:54,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-21 08:10:54,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:54,137 INFO L225 Difference]: With dead ends: 5851 [2022-07-21 08:10:54,137 INFO L226 Difference]: Without dead ends: 5007 [2022-07-21 08:10:54,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:10:54,146 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 1059 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 2049 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 2165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:54,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 1970 Invalid, 2165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2049 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 08:10:54,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5007 states. [2022-07-21 08:10:54,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5007 to 4466. [2022-07-21 08:10:54,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 3657 states have (on average 1.3584905660377358) internal successors, (4968), 3707 states have internal predecessors, (4968), 463 states have call successors, (463), 269 states have call predecessors, (463), 344 states have return successors, (650), 499 states have call predecessors, (650), 461 states have call successors, (650) [2022-07-21 08:10:54,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 6081 transitions. [2022-07-21 08:10:54,464 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 6081 transitions. Word has length 112 [2022-07-21 08:10:54,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:54,464 INFO L495 AbstractCegarLoop]: Abstraction has 4466 states and 6081 transitions. [2022-07-21 08:10:54,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:54,465 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 6081 transitions. [2022-07-21 08:10:54,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 08:10:54,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:54,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:10:54,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:10:54,468 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:54,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:54,469 INFO L85 PathProgramCache]: Analyzing trace with hash -991797797, now seen corresponding path program 1 times [2022-07-21 08:10:54,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:54,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769191967] [2022-07-21 08:10:54,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:54,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:54,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:54,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 08:10:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:54,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 08:10:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:54,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 08:10:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:54,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 08:10:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:54,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:54,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:54,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769191967] [2022-07-21 08:10:54,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769191967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:54,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:54,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:54,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656216995] [2022-07-21 08:10:54,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:54,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:54,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:54,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:54,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:54,569 INFO L87 Difference]: Start difference. First operand 4466 states and 6081 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:56,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:56,670 INFO L93 Difference]: Finished difference Result 8817 states and 12959 transitions. [2022-07-21 08:10:56,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:10:56,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-21 08:10:56,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:56,698 INFO L225 Difference]: With dead ends: 8817 [2022-07-21 08:10:56,698 INFO L226 Difference]: Without dead ends: 7151 [2022-07-21 08:10:56,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:10:56,709 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 1059 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 2043 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 2159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:56,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 1967 Invalid, 2159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2043 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 08:10:56,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7151 states. [2022-07-21 08:10:57,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7151 to 6116. [2022-07-21 08:10:57,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6116 states, 5131 states have (on average 1.4094718378483726) internal successors, (7232), 5189 states have internal predecessors, (7232), 583 states have call successors, (583), 317 states have call predecessors, (583), 400 states have return successors, (840), 627 states have call predecessors, (840), 581 states have call successors, (840) [2022-07-21 08:10:57,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6116 states to 6116 states and 8655 transitions. [2022-07-21 08:10:57,078 INFO L78 Accepts]: Start accepts. Automaton has 6116 states and 8655 transitions. Word has length 112 [2022-07-21 08:10:57,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:57,079 INFO L495 AbstractCegarLoop]: Abstraction has 6116 states and 8655 transitions. [2022-07-21 08:10:57,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:57,079 INFO L276 IsEmpty]: Start isEmpty. Operand 6116 states and 8655 transitions. [2022-07-21 08:10:57,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 08:10:57,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:57,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:10:57,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:10:57,084 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:57,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:57,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1362587485, now seen corresponding path program 1 times [2022-07-21 08:10:57,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:57,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717445057] [2022-07-21 08:10:57,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:57,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:57,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:57,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 08:10:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:57,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 08:10:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:57,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 08:10:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:57,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 08:10:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:57,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:57,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717445057] [2022-07-21 08:10:57,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717445057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:57,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:57,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:57,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462686421] [2022-07-21 08:10:57,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:57,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:57,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:57,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:57,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:57,182 INFO L87 Difference]: Start difference. First operand 6116 states and 8655 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:59,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:59,367 INFO L93 Difference]: Finished difference Result 14747 states and 22343 transitions. [2022-07-21 08:10:59,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:10:59,367 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-21 08:10:59,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:59,403 INFO L225 Difference]: With dead ends: 14747 [2022-07-21 08:10:59,404 INFO L226 Difference]: Without dead ends: 11431 [2022-07-21 08:10:59,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:10:59,420 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 1059 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 2037 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:59,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 1964 Invalid, 2153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2037 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 08:10:59,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11431 states. [2022-07-21 08:10:59,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11431 to 9430. [2022-07-21 08:10:59,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9430 states, 8093 states have (on average 1.4555788953416533) internal successors, (11780), 8167 states have internal predecessors, (11780), 823 states have call successors, (823), 413 states have call predecessors, (823), 512 states have return successors, (1274), 883 states have call predecessors, (1274), 821 states have call successors, (1274) [2022-07-21 08:10:59,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9430 states to 9430 states and 13877 transitions. [2022-07-21 08:10:59,996 INFO L78 Accepts]: Start accepts. Automaton has 9430 states and 13877 transitions. Word has length 112 [2022-07-21 08:10:59,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:59,996 INFO L495 AbstractCegarLoop]: Abstraction has 9430 states and 13877 transitions. [2022-07-21 08:10:59,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:59,997 INFO L276 IsEmpty]: Start isEmpty. Operand 9430 states and 13877 transitions. [2022-07-21 08:11:00,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 08:11:00,004 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:11:00,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:11:00,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:11:00,005 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:11:00,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:11:00,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1055316581, now seen corresponding path program 1 times [2022-07-21 08:11:00,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:11:00,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635029602] [2022-07-21 08:11:00,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:11:00,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:11:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:00,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:11:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:00,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 08:11:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:00,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 08:11:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:00,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 08:11:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:00,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 08:11:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:11:00,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:11:00,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635029602] [2022-07-21 08:11:00,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635029602] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:11:00,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:11:00,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:11:00,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874587757] [2022-07-21 08:11:00,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:11:00,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:11:00,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:11:00,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:11:00,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:11:00,104 INFO L87 Difference]: Start difference. First operand 9430 states and 13877 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:02,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:11:02,789 INFO L93 Difference]: Finished difference Result 26605 states and 41299 transitions. [2022-07-21 08:11:02,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:11:02,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-21 08:11:02,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:11:02,870 INFO L225 Difference]: With dead ends: 26605 [2022-07-21 08:11:02,870 INFO L226 Difference]: Without dead ends: 19975 [2022-07-21 08:11:02,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:11:02,903 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 1059 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:11:02,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 1961 Invalid, 2147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2031 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 08:11:02,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19975 states. [2022-07-21 08:11:03,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19975 to 16088. [2022-07-21 08:11:03,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16088 states, 14047 states have (on average 1.4892859685342066) internal successors, (20920), 14153 states have internal predecessors, (20920), 1303 states have call successors, (1303), 605 states have call predecessors, (1303), 736 states have return successors, (2304), 1395 states have call predecessors, (2304), 1301 states have call successors, (2304) [2022-07-21 08:11:03,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16088 states to 16088 states and 24527 transitions. [2022-07-21 08:11:03,974 INFO L78 Accepts]: Start accepts. Automaton has 16088 states and 24527 transitions. Word has length 112 [2022-07-21 08:11:03,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:11:03,974 INFO L495 AbstractCegarLoop]: Abstraction has 16088 states and 24527 transitions. [2022-07-21 08:11:03,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:03,975 INFO L276 IsEmpty]: Start isEmpty. Operand 16088 states and 24527 transitions. [2022-07-21 08:11:03,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 08:11:03,987 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:11:03,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:11:03,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:11:03,987 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:11:03,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:11:03,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1826050147, now seen corresponding path program 1 times [2022-07-21 08:11:03,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:11:03,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642974604] [2022-07-21 08:11:03,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:11:03,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:11:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:04,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:11:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:04,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 08:11:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:04,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 08:11:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:04,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 08:11:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:04,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 08:11:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:11:04,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:11:04,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642974604] [2022-07-21 08:11:04,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642974604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:11:04,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:11:04,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:11:04,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121838728] [2022-07-21 08:11:04,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:11:04,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:11:04,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:11:04,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:11:04,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:11:04,089 INFO L87 Difference]: Start difference. First operand 16088 states and 24527 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:07,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:11:07,981 INFO L93 Difference]: Finished difference Result 56271 states and 88769 transitions. [2022-07-21 08:11:07,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:11:07,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-21 08:11:07,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:11:08,243 INFO L225 Difference]: With dead ends: 56271 [2022-07-21 08:11:08,243 INFO L226 Difference]: Without dead ends: 42983 [2022-07-21 08:11:08,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:11:08,295 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 1125 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 2322 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 2054 SdHoareTripleChecker+Invalid, 2443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:11:08,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 2054 Invalid, 2443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2322 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 08:11:08,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42983 states. [2022-07-21 08:11:09,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42983 to 29274. [2022-07-21 08:11:09,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29274 states, 25889 states have (on average 1.5127660396307312) internal successors, (39164), 26059 states have internal predecessors, (39164), 2199 states have call successors, (2199), 989 states have call predecessors, (2199), 1184 states have return successors, (4786), 2355 states have call predecessors, (4786), 2197 states have call successors, (4786) [2022-07-21 08:11:10,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29274 states to 29274 states and 46149 transitions. [2022-07-21 08:11:10,087 INFO L78 Accepts]: Start accepts. Automaton has 29274 states and 46149 transitions. Word has length 112 [2022-07-21 08:11:10,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:11:10,089 INFO L495 AbstractCegarLoop]: Abstraction has 29274 states and 46149 transitions. [2022-07-21 08:11:10,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:10,089 INFO L276 IsEmpty]: Start isEmpty. Operand 29274 states and 46149 transitions. [2022-07-21 08:11:10,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 08:11:10,112 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:11:10,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:11:10,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:11:10,113 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:11:10,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:11:10,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1474223451, now seen corresponding path program 1 times [2022-07-21 08:11:10,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:11:10,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392268056] [2022-07-21 08:11:10,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:11:10,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:11:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:10,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:11:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:10,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 08:11:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:10,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 08:11:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:10,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 08:11:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:10,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 08:11:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:10,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:11:10,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:11:10,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392268056] [2022-07-21 08:11:10,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392268056] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:11:10,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:11:10,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:11:10,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687746296] [2022-07-21 08:11:10,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:11:10,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:11:10,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:11:10,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:11:10,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:11:10,213 INFO L87 Difference]: Start difference. First operand 29274 states and 46149 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:16,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:11:16,599 INFO L93 Difference]: Finished difference Result 105748 states and 170709 transitions. [2022-07-21 08:11:16,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:11:16,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-21 08:11:16,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:11:16,950 INFO L225 Difference]: With dead ends: 105748 [2022-07-21 08:11:16,950 INFO L226 Difference]: Without dead ends: 79274 [2022-07-21 08:11:17,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:11:17,049 INFO L413 NwaCegarLoop]: 736 mSDtfsCounter, 1117 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 2213 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 2018 SdHoareTripleChecker+Invalid, 2335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:11:17,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 2018 Invalid, 2335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2213 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 08:11:17,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79274 states. [2022-07-21 08:11:20,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79274 to 55708. [2022-07-21 08:11:20,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55708 states, 49699 states have (on average 1.5285619428962354) internal successors, (75968), 49997 states have internal predecessors, (75968), 3927 states have call successors, (3927), 1757 states have call predecessors, (3927), 2080 states have return successors, (11144), 4211 states have call predecessors, (11144), 3925 states have call successors, (11144) [2022-07-21 08:11:21,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55708 states to 55708 states and 91039 transitions. [2022-07-21 08:11:21,177 INFO L78 Accepts]: Start accepts. Automaton has 55708 states and 91039 transitions. Word has length 112 [2022-07-21 08:11:21,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:11:21,178 INFO L495 AbstractCegarLoop]: Abstraction has 55708 states and 91039 transitions. [2022-07-21 08:11:21,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:21,178 INFO L276 IsEmpty]: Start isEmpty. Operand 55708 states and 91039 transitions. [2022-07-21 08:11:21,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 08:11:21,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:11:21,230 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:11:21,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:11:21,231 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:11:21,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:11:21,231 INFO L85 PathProgramCache]: Analyzing trace with hash -484351335, now seen corresponding path program 1 times [2022-07-21 08:11:21,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:11:21,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096902935] [2022-07-21 08:11:21,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:11:21,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:11:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:21,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:11:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:21,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 08:11:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:21,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 08:11:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:21,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 08:11:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:21,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 08:11:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:21,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:11:21,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:11:21,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096902935] [2022-07-21 08:11:21,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096902935] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:11:21,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:11:21,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:11:21,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934071557] [2022-07-21 08:11:21,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:11:21,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:11:21,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:11:21,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:11:21,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:11:21,350 INFO L87 Difference]: Start difference. First operand 55708 states and 91039 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:26,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:11:26,061 INFO L93 Difference]: Finished difference Result 123592 states and 208952 transitions. [2022-07-21 08:11:26,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:11:26,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-21 08:11:26,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:11:26,381 INFO L225 Difference]: With dead ends: 123592 [2022-07-21 08:11:26,381 INFO L226 Difference]: Without dead ends: 70682 [2022-07-21 08:11:26,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:11:26,502 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 1020 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:11:26,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 1080 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 08:11:26,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70682 states. [2022-07-21 08:11:29,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70682 to 55708. [2022-07-21 08:11:30,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55708 states, 49699 states have (on average 1.5233908126924083) internal successors, (75711), 49997 states have internal predecessors, (75711), 3927 states have call successors, (3927), 1757 states have call predecessors, (3927), 2080 states have return successors, (11144), 4211 states have call predecessors, (11144), 3925 states have call successors, (11144) [2022-07-21 08:11:30,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55708 states to 55708 states and 90782 transitions. [2022-07-21 08:11:30,242 INFO L78 Accepts]: Start accepts. Automaton has 55708 states and 90782 transitions. Word has length 112 [2022-07-21 08:11:30,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:11:30,243 INFO L495 AbstractCegarLoop]: Abstraction has 55708 states and 90782 transitions. [2022-07-21 08:11:30,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:30,243 INFO L276 IsEmpty]: Start isEmpty. Operand 55708 states and 90782 transitions. [2022-07-21 08:11:30,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 08:11:30,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:11:30,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:11:30,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:11:30,286 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:11:30,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:11:30,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1392131483, now seen corresponding path program 1 times [2022-07-21 08:11:30,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:11:30,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485712365] [2022-07-21 08:11:30,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:11:30,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:11:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:30,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:11:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:30,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 08:11:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:30,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 08:11:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:30,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 08:11:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:30,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 08:11:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:30,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:11:30,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:11:30,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485712365] [2022-07-21 08:11:30,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485712365] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:11:30,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:11:30,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:11:30,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636034326] [2022-07-21 08:11:30,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:11:30,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:11:30,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:11:30,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:11:30,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:11:30,381 INFO L87 Difference]: Start difference. First operand 55708 states and 90782 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:40,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:11:40,996 INFO L93 Difference]: Finished difference Result 200154 states and 332279 transitions. [2022-07-21 08:11:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:11:40,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-21 08:11:40,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:11:41,730 INFO L225 Difference]: With dead ends: 200154 [2022-07-21 08:11:41,731 INFO L226 Difference]: Without dead ends: 147246 [2022-07-21 08:11:41,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:11:41,879 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 1169 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 1941 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 1931 SdHoareTripleChecker+Invalid, 2066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:11:41,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1201 Valid, 1931 Invalid, 2066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1941 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 08:11:41,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147246 states. [2022-07-21 08:11:48,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147246 to 108704. [2022-07-21 08:11:48,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108704 states, 97575 states have (on average 1.5316115808352548) internal successors, (149447), 98129 states have internal predecessors, (149447), 7255 states have call successors, (7255), 3293 states have call predecessors, (7255), 3872 states have return successors, (28106), 7795 states have call predecessors, (28106), 7253 states have call successors, (28106) [2022-07-21 08:11:48,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108704 states to 108704 states and 184808 transitions. [2022-07-21 08:11:48,957 INFO L78 Accepts]: Start accepts. Automaton has 108704 states and 184808 transitions. Word has length 112 [2022-07-21 08:11:48,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:11:48,958 INFO L495 AbstractCegarLoop]: Abstraction has 108704 states and 184808 transitions. [2022-07-21 08:11:48,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:48,958 INFO L276 IsEmpty]: Start isEmpty. Operand 108704 states and 184808 transitions. [2022-07-21 08:11:49,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 08:11:49,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:11:49,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:11:49,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:11:49,026 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:11:49,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:11:49,027 INFO L85 PathProgramCache]: Analyzing trace with hash -486999463, now seen corresponding path program 1 times [2022-07-21 08:11:49,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:11:49,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314498920] [2022-07-21 08:11:49,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:11:49,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:11:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:49,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:11:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:49,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 08:11:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:49,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 08:11:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:49,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 08:11:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:49,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 08:11:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:11:49,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:11:49,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314498920] [2022-07-21 08:11:49,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314498920] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:11:49,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:11:49,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:11:49,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964874945] [2022-07-21 08:11:49,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:11:49,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:11:49,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:11:49,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:11:49,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:11:49,113 INFO L87 Difference]: Start difference. First operand 108704 states and 184808 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)