./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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.12.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 57a0d461468e871620bb6a0a3de7e8bdfa4741915d12326365887ea97e191d16 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:17:30,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:17:30,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:17:30,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:17:30,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:17:30,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:17:30,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:17:30,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:17:30,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:17:30,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:17:30,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:17:30,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:17:30,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:17:30,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:17:30,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:17:30,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:17:30,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:17:30,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:17:30,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:17:30,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:17:30,567 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:17:30,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:17:30,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:17:30,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:17:30,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:17:30,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:17:30,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:17:30,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:17:30,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:17:30,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:17:30,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:17:30,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:17:30,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:17:30,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:17:30,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:17:30,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:17:30,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:17:30,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:17:30,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:17:30,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:17:30,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:17:30,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:17:30,598 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:17:30,628 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:17:30,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:17:30,628 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:17:30,628 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:17:30,629 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:17:30,629 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:17:30,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:17:30,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:17:30,630 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:17:30,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:17:30,631 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:17:30,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:17:30,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:17:30,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:17:30,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:17:30,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:17:30,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:17:30,632 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:17:30,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:17:30,633 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:17:30,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:17:30,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:17:30,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:17:30,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:17:30,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:17:30,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:17:30,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:17:30,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:17:30,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:17:30,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:17:30,635 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:17:30,635 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:17:30,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:17:30,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57a0d461468e871620bb6a0a3de7e8bdfa4741915d12326365887ea97e191d16 [2022-07-13 21:17:30,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:17:30,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:17:30,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:17:30,890 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:17:30,890 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:17:30,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c [2022-07-13 21:17:30,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d059ca64/aa4198e85abf4cf2b9d3472d1ef082de/FLAG47dc8a2f8 [2022-07-13 21:17:31,410 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:17:31,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c [2022-07-13 21:17:31,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d059ca64/aa4198e85abf4cf2b9d3472d1ef082de/FLAG47dc8a2f8 [2022-07-13 21:17:31,925 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d059ca64/aa4198e85abf4cf2b9d3472d1ef082de [2022-07-13 21:17:31,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:17:31,929 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:17:31,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:17:31,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:17:31,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:17:31,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:17:31" (1/1) ... [2022-07-13 21:17:31,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63271baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:31, skipping insertion in model container [2022-07-13 21:17:31,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:17:31" (1/1) ... [2022-07-13 21:17:31,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:17:31,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:17:32,162 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.12.cil-2.c[911,924] [2022-07-13 21:17:32,220 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.12.cil-2.c[8416,8429] [2022-07-13 21:17:32,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:17:32,369 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:17:32,379 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.12.cil-2.c[911,924] [2022-07-13 21:17:32,394 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.12.cil-2.c[8416,8429] [2022-07-13 21:17:32,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:17:32,455 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:17:32,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:32 WrapperNode [2022-07-13 21:17:32,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:17:32,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:17:32,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:17:32,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:17:32,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:32" (1/1) ... [2022-07-13 21:17:32,487 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:32" (1/1) ... [2022-07-13 21:17:32,532 INFO L137 Inliner]: procedures = 79, calls = 97, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 1078 [2022-07-13 21:17:32,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:17:32,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:17:32,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:17:32,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:17:32,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:32" (1/1) ... [2022-07-13 21:17:32,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:32" (1/1) ... [2022-07-13 21:17:32,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:32" (1/1) ... [2022-07-13 21:17:32,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:32" (1/1) ... [2022-07-13 21:17:32,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:32" (1/1) ... [2022-07-13 21:17:32,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:32" (1/1) ... [2022-07-13 21:17:32,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:32" (1/1) ... [2022-07-13 21:17:32,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:17:32,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:17:32,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:17:32,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:17:32,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:32" (1/1) ... [2022-07-13 21:17:32,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:17:32,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:17:32,696 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) [2022-07-13 21:17:32,716 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 [2022-07-13 21:17:32,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:17:32,735 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 21:17:32,735 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 21:17:32,735 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-13 21:17:32,737 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-13 21:17:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-13 21:17:32,737 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-13 21:17:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-13 21:17:32,737 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-13 21:17:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-13 21:17:32,737 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-13 21:17:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-13 21:17:32,738 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-13 21:17:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-13 21:17:32,738 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-13 21:17:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-13 21:17:32,738 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-13 21:17:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-13 21:17:32,738 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-13 21:17:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-13 21:17:32,738 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-13 21:17:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-13 21:17:32,739 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-13 21:17:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:17:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-13 21:17:32,739 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-13 21:17:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-13 21:17:32,739 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-13 21:17:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:17:32,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:17:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-13 21:17:32,740 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-13 21:17:32,926 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:17:32,927 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:17:33,596 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-13 21:17:33,596 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; [2022-07-13 21:17:33,663 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:17:33,673 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:17:33,673 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2022-07-13 21:17:33,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:17:33 BoogieIcfgContainer [2022-07-13 21:17:33,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:17:33,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:17:33,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:17:33,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:17:33,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:17:31" (1/3) ... [2022-07-13 21:17:33,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce54adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:17:33, skipping insertion in model container [2022-07-13 21:17:33,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:32" (2/3) ... [2022-07-13 21:17:33,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce54adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:17:33, skipping insertion in model container [2022-07-13 21:17:33,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:17:33" (3/3) ... [2022-07-13 21:17:33,683 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.12.cil-2.c [2022-07-13 21:17:33,695 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:17:33,696 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:17:33,746 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:17:33,751 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@3de38865, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@532a086d [2022-07-13 21:17:33,751 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 21:17:33,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 499 states, 440 states have (on average 1.6386363636363637) internal successors, (721), 446 states have internal predecessors, (721), 42 states have call successors, (42), 14 states have call predecessors, (42), 14 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-07-13 21:17:33,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:17:33,778 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:33,778 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] [2022-07-13 21:17:33,779 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:33,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:33,786 INFO L85 PathProgramCache]: Analyzing trace with hash -50409674, now seen corresponding path program 1 times [2022-07-13 21:17:33,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:33,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547548853] [2022-07-13 21:17:33,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:33,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:34,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:34,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:34,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:17:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:34,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:34,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:17:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:34,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:17:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:34,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:17:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:34,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:17:34,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:34,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547548853] [2022-07-13 21:17:34,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547548853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:34,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:34,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:17:34,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371425888] [2022-07-13 21:17:34,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:34,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:17:34,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:34,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:17:34,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:17:34,135 INFO L87 Difference]: Start difference. First operand has 499 states, 440 states have (on average 1.6386363636363637) internal successors, (721), 446 states have internal predecessors, (721), 42 states have call successors, (42), 14 states have call predecessors, (42), 14 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:17:34,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:34,975 INFO L93 Difference]: Finished difference Result 988 states and 1590 transitions. [2022-07-13 21:17:34,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 21:17:34,977 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-13 21:17:34,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:34,992 INFO L225 Difference]: With dead ends: 988 [2022-07-13 21:17:34,992 INFO L226 Difference]: Without dead ends: 507 [2022-07-13 21:17:35,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:17:35,003 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 1105 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:35,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 1751 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 21:17:35,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-07-13 21:17:35,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 489. [2022-07-13 21:17:35,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 432 states have (on average 1.5509259259259258) internal successors, (670), 436 states have internal predecessors, (670), 42 states have call successors, (42), 14 states have call predecessors, (42), 13 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-07-13 21:17:35,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 752 transitions. [2022-07-13 21:17:35,076 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 752 transitions. Word has length 65 [2022-07-13 21:17:35,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:35,077 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 752 transitions. [2022-07-13 21:17:35,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:17:35,077 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 752 transitions. [2022-07-13 21:17:35,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:17:35,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:35,080 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] [2022-07-13 21:17:35,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:17:35,081 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:35,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:35,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1437195084, now seen corresponding path program 1 times [2022-07-13 21:17:35,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:35,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385112860] [2022-07-13 21:17:35,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:35,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:35,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:35,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:35,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:17:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:35,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:35,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:17:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:35,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:17:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:35,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:17:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:35,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:17:35,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:35,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385112860] [2022-07-13 21:17:35,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385112860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:35,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:35,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:17:35,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12570073] [2022-07-13 21:17:35,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:35,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:17:35,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:35,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:17:35,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:17:35,230 INFO L87 Difference]: Start difference. First operand 489 states and 752 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:17:36,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:36,356 INFO L93 Difference]: Finished difference Result 744 states and 1121 transitions. [2022-07-13 21:17:36,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:17:36,357 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 [2022-07-13 21:17:36,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:36,364 INFO L225 Difference]: With dead ends: 744 [2022-07-13 21:17:36,364 INFO L226 Difference]: Without dead ends: 640 [2022-07-13 21:17:36,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:17:36,369 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 903 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:36,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 2835 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:17:36,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2022-07-13 21:17:36,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 601. [2022-07-13 21:17:36,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 522 states have (on average 1.524904214559387) internal successors, (796), 528 states have internal predecessors, (796), 55 states have call successors, (55), 21 states have call predecessors, (55), 22 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2022-07-13 21:17:36,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 909 transitions. [2022-07-13 21:17:36,432 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 909 transitions. Word has length 65 [2022-07-13 21:17:36,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:36,433 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 909 transitions. [2022-07-13 21:17:36,433 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) [2022-07-13 21:17:36,433 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 909 transitions. [2022-07-13 21:17:36,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:17:36,435 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:36,435 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] [2022-07-13 21:17:36,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:17:36,436 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:36,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:36,436 INFO L85 PathProgramCache]: Analyzing trace with hash 241693556, now seen corresponding path program 1 times [2022-07-13 21:17:36,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:36,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499773850] [2022-07-13 21:17:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:36,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:36,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:36,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:36,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:17:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:36,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:36,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:17:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:36,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:17:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:36,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:17:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:36,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:17:36,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:36,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499773850] [2022-07-13 21:17:36,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499773850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:36,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:36,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:17:36,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848001317] [2022-07-13 21:17:36,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:36,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:17:36,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:36,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:17:36,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:17:36,569 INFO L87 Difference]: Start difference. First operand 601 states and 909 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) [2022-07-13 21:17:37,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:37,787 INFO L93 Difference]: Finished difference Result 998 states and 1474 transitions. [2022-07-13 21:17:37,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 21:17:37,788 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 [2022-07-13 21:17:37,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:37,794 INFO L225 Difference]: With dead ends: 998 [2022-07-13 21:17:37,794 INFO L226 Difference]: Without dead ends: 789 [2022-07-13 21:17:37,795 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 [2022-07-13 21:17:37,796 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 1456 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 2896 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:37,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 2896 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1522 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:17:37,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2022-07-13 21:17:37,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 713. [2022-07-13 21:17:37,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 612 states have (on average 1.5049019607843137) internal successors, (921), 620 states have internal predecessors, (921), 68 states have call successors, (68), 28 states have call predecessors, (68), 31 states have return successors, (79), 68 states have call predecessors, (79), 66 states have call successors, (79) [2022-07-13 21:17:37,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1068 transitions. [2022-07-13 21:17:37,843 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1068 transitions. Word has length 65 [2022-07-13 21:17:37,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:37,843 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 1068 transitions. [2022-07-13 21:17:37,843 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) [2022-07-13 21:17:37,844 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1068 transitions. [2022-07-13 21:17:37,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:17:37,846 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:37,846 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] [2022-07-13 21:17:37,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:17:37,847 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:37,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:37,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1786892554, now seen corresponding path program 1 times [2022-07-13 21:17:37,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:37,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037660593] [2022-07-13 21:17:37,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:37,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:37,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:37,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:37,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:17:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:37,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:37,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:17:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:37,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:17:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:37,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:17:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:37,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:17:37,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:37,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037660593] [2022-07-13 21:17:37,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037660593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:37,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:37,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:17:37,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892651877] [2022-07-13 21:17:37,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:37,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:17:37,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:37,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:17:37,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:17:37,951 INFO L87 Difference]: Start difference. First operand 713 states and 1068 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) [2022-07-13 21:17:39,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:39,936 INFO L93 Difference]: Finished difference Result 2259 states and 3265 transitions. [2022-07-13 21:17:39,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 21:17:39,937 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 [2022-07-13 21:17:39,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:39,946 INFO L225 Difference]: With dead ends: 2259 [2022-07-13 21:17:39,946 INFO L226 Difference]: Without dead ends: 1926 [2022-07-13 21:17:39,948 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 [2022-07-13 21:17:39,949 INFO L413 NwaCegarLoop]: 882 mSDtfsCounter, 3850 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 1920 mSolverCounterSat, 669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3868 SdHoareTripleChecker+Valid, 3237 SdHoareTripleChecker+Invalid, 2589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 1920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:39,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3868 Valid, 3237 Invalid, 2589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [669 Valid, 1920 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 21:17:39,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2022-07-13 21:17:40,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1766. [2022-07-13 21:17:40,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1766 states, 1460 states have (on average 1.4157534246575343) internal successors, (2067), 1483 states have internal predecessors, (2067), 178 states have call successors, (178), 111 states have call predecessors, (178), 126 states have return successors, (212), 174 states have call predecessors, (212), 176 states have call successors, (212) [2022-07-13 21:17:40,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 2457 transitions. [2022-07-13 21:17:40,037 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 2457 transitions. Word has length 65 [2022-07-13 21:17:40,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:40,038 INFO L495 AbstractCegarLoop]: Abstraction has 1766 states and 2457 transitions. [2022-07-13 21:17:40,038 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) [2022-07-13 21:17:40,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 2457 transitions. [2022-07-13 21:17:40,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 21:17:40,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:40,039 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] [2022-07-13 21:17:40,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:17:40,040 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:40,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:40,041 INFO L85 PathProgramCache]: Analyzing trace with hash -666149630, now seen corresponding path program 1 times [2022-07-13 21:17:40,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:40,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333268702] [2022-07-13 21:17:40,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:40,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:40,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:40,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:40,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:17:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:40,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:40,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:17:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:40,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 21:17:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:40,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 21:17:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:40,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:17:40,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:40,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333268702] [2022-07-13 21:17:40,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333268702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:40,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:40,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:17:40,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673241861] [2022-07-13 21:17:40,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:40,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:17:40,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:40,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:17:40,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:17:40,158 INFO L87 Difference]: Start difference. First operand 1766 states and 2457 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-07-13 21:17:41,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:41,317 INFO L93 Difference]: Finished difference Result 3294 states and 4536 transitions. [2022-07-13 21:17:41,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:17:41,318 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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 66 [2022-07-13 21:17:41,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:41,327 INFO L225 Difference]: With dead ends: 3294 [2022-07-13 21:17:41,327 INFO L226 Difference]: Without dead ends: 1914 [2022-07-13 21:17:41,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:17:41,332 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 992 mSDsluCounter, 2199 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 2939 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:41,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 2939 Invalid, 1826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:17:41,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2022-07-13 21:17:41,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1806. [2022-07-13 21:17:41,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1492 states have (on average 1.4028150134048258) internal successors, (2093), 1515 states have internal predecessors, (2093), 178 states have call successors, (178), 111 states have call predecessors, (178), 134 states have return successors, (220), 182 states have call predecessors, (220), 176 states have call successors, (220) [2022-07-13 21:17:41,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2491 transitions. [2022-07-13 21:17:41,415 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2491 transitions. Word has length 66 [2022-07-13 21:17:41,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:41,416 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2491 transitions. [2022-07-13 21:17:41,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-07-13 21:17:41,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2491 transitions. [2022-07-13 21:17:41,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 21:17:41,417 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:41,418 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] [2022-07-13 21:17:41,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:17:41,418 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:41,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:41,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1695508928, now seen corresponding path program 1 times [2022-07-13 21:17:41,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:41,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593307159] [2022-07-13 21:17:41,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:41,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:41,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:41,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:41,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:17:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:41,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:41,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:17:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:41,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 21:17:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:41,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 21:17:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:41,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:17:41,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:41,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593307159] [2022-07-13 21:17:41,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593307159] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:41,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:41,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:17:41,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636807897] [2022-07-13 21:17:41,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:41,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:17:41,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:41,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:17:41,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:17:41,509 INFO L87 Difference]: Start difference. First operand 1806 states and 2491 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) [2022-07-13 21:17:43,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:43,463 INFO L93 Difference]: Finished difference Result 5378 states and 7365 transitions. [2022-07-13 21:17:43,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 21:17:43,465 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 [2022-07-13 21:17:43,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:43,475 INFO L225 Difference]: With dead ends: 5378 [2022-07-13 21:17:43,475 INFO L226 Difference]: Without dead ends: 2197 [2022-07-13 21:17:43,483 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 [2022-07-13 21:17:43,486 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 3913 mSDsluCounter, 2404 mSDsCounter, 0 mSdLazyCounter, 1861 mSolverCounterSat, 678 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3931 SdHoareTripleChecker+Valid, 3280 SdHoareTripleChecker+Invalid, 2539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 678 IncrementalHoareTripleChecker+Valid, 1861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:43,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3931 Valid, 3280 Invalid, 2539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [678 Valid, 1861 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 21:17:43,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2197 states. [2022-07-13 21:17:43,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2197 to 2017. [2022-07-13 21:17:43,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2017 states, 1631 states have (on average 1.3605150214592274) internal successors, (2219), 1656 states have internal predecessors, (2219), 218 states have call successors, (218), 139 states have call predecessors, (218), 166 states have return successors, (266), 224 states have call predecessors, (266), 216 states have call successors, (266) [2022-07-13 21:17:43,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 2703 transitions. [2022-07-13 21:17:43,579 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 2703 transitions. Word has length 66 [2022-07-13 21:17:43,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:43,579 INFO L495 AbstractCegarLoop]: Abstraction has 2017 states and 2703 transitions. [2022-07-13 21:17:43,580 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) [2022-07-13 21:17:43,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 2703 transitions. [2022-07-13 21:17:43,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:17:43,581 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:43,582 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] [2022-07-13 21:17:43,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:17:43,582 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:43,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:43,583 INFO L85 PathProgramCache]: Analyzing trace with hash -2019341431, now seen corresponding path program 1 times [2022-07-13 21:17:43,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:43,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959660284] [2022-07-13 21:17:43,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:43,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:43,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:43,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:43,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:17:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:43,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:43,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:17:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:43,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:17:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:43,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:17:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:43,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:17:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:43,704 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:17:43,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:43,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959660284] [2022-07-13 21:17:43,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959660284] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:43,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:43,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:17:43,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093260063] [2022-07-13 21:17:43,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:43,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:17:43,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:43,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:17:43,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:17:43,706 INFO L87 Difference]: Start difference. First operand 2017 states and 2703 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) [2022-07-13 21:17:44,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:44,752 INFO L93 Difference]: Finished difference Result 3842 states and 5105 transitions. [2022-07-13 21:17:44,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:17:44,753 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 [2022-07-13 21:17:44,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:44,763 INFO L225 Difference]: With dead ends: 3842 [2022-07-13 21:17:44,764 INFO L226 Difference]: Without dead ends: 2211 [2022-07-13 21:17:44,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:17:44,768 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 986 mSDsluCounter, 2164 mSDsCounter, 0 mSdLazyCounter, 1639 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:44,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 2890 Invalid, 1790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1639 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 21:17:44,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2211 states. [2022-07-13 21:17:44,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2211 to 2077. [2022-07-13 21:17:44,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2077 states, 1679 states have (on average 1.3466349017272186) internal successors, (2261), 1704 states have internal predecessors, (2261), 218 states have call successors, (218), 139 states have call predecessors, (218), 178 states have return successors, (278), 236 states have call predecessors, (278), 216 states have call successors, (278) [2022-07-13 21:17:44,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 2757 transitions. [2022-07-13 21:17:44,854 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 2757 transitions. Word has length 91 [2022-07-13 21:17:44,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:44,854 INFO L495 AbstractCegarLoop]: Abstraction has 2077 states and 2757 transitions. [2022-07-13 21:17:44,855 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) [2022-07-13 21:17:44,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 2757 transitions. [2022-07-13 21:17:44,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:17:44,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:44,857 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] [2022-07-13 21:17:44,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:17:44,857 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:44,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:44,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1575440757, now seen corresponding path program 1 times [2022-07-13 21:17:44,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:44,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615593509] [2022-07-13 21:17:44,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:44,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:44,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:44,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:44,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:17:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:44,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:44,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:17:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:44,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:17:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:44,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:17:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:44,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:17:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:44,942 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:17:44,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:44,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615593509] [2022-07-13 21:17:44,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615593509] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:44,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:44,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:17:44,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369727575] [2022-07-13 21:17:44,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:44,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:17:44,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:44,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:17:44,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:17:44,945 INFO L87 Difference]: Start difference. First operand 2077 states and 2757 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) [2022-07-13 21:17:45,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:45,995 INFO L93 Difference]: Finished difference Result 3604 states and 4721 transitions. [2022-07-13 21:17:45,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 21:17:45,996 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 [2022-07-13 21:17:45,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:46,006 INFO L225 Difference]: With dead ends: 3604 [2022-07-13 21:17:46,007 INFO L226 Difference]: Without dead ends: 2151 [2022-07-13 21:17:46,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-07-13 21:17:46,012 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 1471 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 2582 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:46,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 2582 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1359 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 21:17:46,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2022-07-13 21:17:46,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 1856. [2022-07-13 21:17:46,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1511 states have (on average 1.3520847121111847) internal successors, (2043), 1531 states have internal predecessors, (2043), 190 states have call successors, (190), 120 states have call predecessors, (190), 153 states have return successors, (238), 206 states have call predecessors, (238), 188 states have call successors, (238) [2022-07-13 21:17:46,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2471 transitions. [2022-07-13 21:17:46,106 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2471 transitions. Word has length 91 [2022-07-13 21:17:46,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:46,106 INFO L495 AbstractCegarLoop]: Abstraction has 1856 states and 2471 transitions. [2022-07-13 21:17:46,106 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) [2022-07-13 21:17:46,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2471 transitions. [2022-07-13 21:17:46,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:17:46,108 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:46,108 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] [2022-07-13 21:17:46,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:17:46,108 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:46,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:46,109 INFO L85 PathProgramCache]: Analyzing trace with hash 363721289, now seen corresponding path program 1 times [2022-07-13 21:17:46,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:46,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715634764] [2022-07-13 21:17:46,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:46,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:17:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:17:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:17:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:17:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:17:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,191 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 21:17:46,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:46,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715634764] [2022-07-13 21:17:46,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715634764] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:46,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:46,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:17:46,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371722960] [2022-07-13 21:17:46,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:46,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:17:46,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:46,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:17:46,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:17:46,195 INFO L87 Difference]: Start difference. First operand 1856 states and 2471 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) [2022-07-13 21:17:46,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:46,529 INFO L93 Difference]: Finished difference Result 3432 states and 4527 transitions. [2022-07-13 21:17:46,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 21:17:46,530 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 [2022-07-13 21:17:46,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:46,541 INFO L225 Difference]: With dead ends: 3432 [2022-07-13 21:17:46,541 INFO L226 Difference]: Without dead ends: 1963 [2022-07-13 21:17:46,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-07-13 21:17:46,547 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 1324 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 2020 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:46,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1358 Valid, 2020 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 21:17:46,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2022-07-13 21:17:46,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1856. [2022-07-13 21:17:46,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1511 states have (on average 1.328259430840503) internal successors, (2007), 1531 states have internal predecessors, (2007), 190 states have call successors, (190), 120 states have call predecessors, (190), 153 states have return successors, (238), 206 states have call predecessors, (238), 188 states have call successors, (238) [2022-07-13 21:17:46,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2435 transitions. [2022-07-13 21:17:46,646 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2435 transitions. Word has length 91 [2022-07-13 21:17:46,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:46,647 INFO L495 AbstractCegarLoop]: Abstraction has 1856 states and 2435 transitions. [2022-07-13 21:17:46,647 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) [2022-07-13 21:17:46,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2435 transitions. [2022-07-13 21:17:46,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-13 21:17:46,648 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:46,648 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] [2022-07-13 21:17:46,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:17:46,649 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:46,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:46,649 INFO L85 PathProgramCache]: Analyzing trace with hash -128979882, now seen corresponding path program 1 times [2022-07-13 21:17:46,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:46,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941159357] [2022-07-13 21:17:46,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:46,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:17:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:17:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:17:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:17:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 21:17:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,746 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 21:17:46,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:46,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941159357] [2022-07-13 21:17:46,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941159357] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:46,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:46,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:17:46,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706439919] [2022-07-13 21:17:46,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:46,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:17:46,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:46,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:17:46,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:17:46,749 INFO L87 Difference]: Start difference. First operand 1856 states and 2435 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) [2022-07-13 21:17:47,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:47,984 INFO L93 Difference]: Finished difference Result 4274 states and 5518 transitions. [2022-07-13 21:17:47,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-13 21:17:47,985 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 [2022-07-13 21:17:47,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:47,997 INFO L225 Difference]: With dead ends: 4274 [2022-07-13 21:17:47,998 INFO L226 Difference]: Without dead ends: 2654 [2022-07-13 21:17:48,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-13 21:17:48,003 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 2954 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2997 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 1957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:48,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2997 Valid, 2303 Invalid, 1957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:17:48,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2022-07-13 21:17:48,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2477. [2022-07-13 21:17:48,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 1978 states have (on average 1.288675429726997) internal successors, (2549), 2006 states have internal predecessors, (2549), 267 states have call successors, (267), 168 states have call predecessors, (267), 230 states have return successors, (369), 304 states have call predecessors, (369), 265 states have call successors, (369) [2022-07-13 21:17:48,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 3185 transitions. [2022-07-13 21:17:48,108 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 3185 transitions. Word has length 92 [2022-07-13 21:17:48,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:48,109 INFO L495 AbstractCegarLoop]: Abstraction has 2477 states and 3185 transitions. [2022-07-13 21:17:48,109 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) [2022-07-13 21:17:48,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 3185 transitions. [2022-07-13 21:17:48,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-13 21:17:48,111 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:48,112 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:17:48,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 21:17:48,112 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:48,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:48,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1304859459, now seen corresponding path program 1 times [2022-07-13 21:17:48,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:48,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541959537] [2022-07-13 21:17:48,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:48,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:48,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:48,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:48,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:17:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:48,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:48,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:17:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:48,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:17:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:48,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:17:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:48,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 21:17:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:48,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:17:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:48,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 21:17:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:48,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 21:17:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:48,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:48,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:17:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:48,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 21:17:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:48,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 21:17:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:48,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 21:17:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:48,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-13 21:17:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:48,251 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-13 21:17:48,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:48,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541959537] [2022-07-13 21:17:48,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541959537] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:17:48,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90734358] [2022-07-13 21:17:48,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:48,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:17:48,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:17:48,285 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:17:48,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 21:17:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:48,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 21:17:48,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:17:48,606 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-13 21:17:48,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:17:48,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90734358] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:48,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:17:48,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-13 21:17:48,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222599685] [2022-07-13 21:17:48,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:48,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:17:48,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:48,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:17:48,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:17:48,609 INFO L87 Difference]: Start difference. First operand 2477 states and 3185 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 21:17:48,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:48,740 INFO L93 Difference]: Finished difference Result 6403 states and 8014 transitions. [2022-07-13 21:17:48,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:17:48,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 163 [2022-07-13 21:17:48,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:48,760 INFO L225 Difference]: With dead ends: 6403 [2022-07-13 21:17:48,761 INFO L226 Difference]: Without dead ends: 4389 [2022-07-13 21:17:48,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:17:48,768 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 61 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:48,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1511 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:17:48,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4389 states. [2022-07-13 21:17:48,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4389 to 4347. [2022-07-13 21:17:48,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 3435 states have (on average 1.252692867540029) internal successors, (4303), 3486 states have internal predecessors, (4303), 474 states have call successors, (474), 329 states have call predecessors, (474), 436 states have return successors, (637), 533 states have call predecessors, (637), 472 states have call successors, (637) [2022-07-13 21:17:48,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 5414 transitions. [2022-07-13 21:17:48,966 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 5414 transitions. Word has length 163 [2022-07-13 21:17:48,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:48,967 INFO L495 AbstractCegarLoop]: Abstraction has 4347 states and 5414 transitions. [2022-07-13 21:17:48,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 21:17:48,967 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 5414 transitions. [2022-07-13 21:17:48,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:17:48,970 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:48,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:17:48,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 21:17:49,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-13 21:17:49,184 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:49,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:49,184 INFO L85 PathProgramCache]: Analyzing trace with hash 96232972, now seen corresponding path program 1 times [2022-07-13 21:17:49,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:49,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315763872] [2022-07-13 21:17:49,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:49,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:49,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:49,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:17:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:49,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:17:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:49,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:17:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:49,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:17:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:49,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:17:49,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:49,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315763872] [2022-07-13 21:17:49,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315763872] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:49,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:49,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:17:49,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901327707] [2022-07-13 21:17:49,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:49,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:17:49,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:49,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:17:49,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:17:49,350 INFO L87 Difference]: Start difference. First operand 4347 states and 5414 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:17:51,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:51,150 INFO L93 Difference]: Finished difference Result 4860 states and 6246 transitions. [2022-07-13 21:17:51,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:17:51,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:17:51,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:51,167 INFO L225 Difference]: With dead ends: 4860 [2022-07-13 21:17:51,168 INFO L226 Difference]: Without dead ends: 4489 [2022-07-13 21:17:51,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:17:51,171 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 1140 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:51,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 1382 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 21:17:51,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2022-07-13 21:17:51,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 4347. [2022-07-13 21:17:51,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 3435 states have (on average 1.252401746724891) internal successors, (4302), 3486 states have internal predecessors, (4302), 474 states have call successors, (474), 329 states have call predecessors, (474), 436 states have return successors, (637), 533 states have call predecessors, (637), 472 states have call successors, (637) [2022-07-13 21:17:51,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 5413 transitions. [2022-07-13 21:17:51,502 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 5413 transitions. Word has length 178 [2022-07-13 21:17:51,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:51,502 INFO L495 AbstractCegarLoop]: Abstraction has 4347 states and 5413 transitions. [2022-07-13 21:17:51,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:17:51,503 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 5413 transitions. [2022-07-13 21:17:51,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:17:51,505 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:51,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:17:51,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:17:51,506 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:51,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:51,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1599331278, now seen corresponding path program 1 times [2022-07-13 21:17:51,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:51,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11114636] [2022-07-13 21:17:51,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:51,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:51,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:51,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:17:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:51,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:17:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:51,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:17:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:51,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:17:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:17:51,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:51,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11114636] [2022-07-13 21:17:51,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11114636] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:51,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:51,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:17:51,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352477326] [2022-07-13 21:17:51,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:51,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:17:51,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:51,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:17:51,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:17:51,682 INFO L87 Difference]: Start difference. First operand 4347 states and 5413 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:17:53,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:53,392 INFO L93 Difference]: Finished difference Result 4852 states and 6229 transitions. [2022-07-13 21:17:53,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:17:53,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:17:53,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:53,414 INFO L225 Difference]: With dead ends: 4852 [2022-07-13 21:17:53,414 INFO L226 Difference]: Without dead ends: 4489 [2022-07-13 21:17:53,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:17:53,420 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 1131 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:53,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 1380 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 21:17:53,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2022-07-13 21:17:53,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 4347. [2022-07-13 21:17:53,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 3435 states have (on average 1.2521106259097525) internal successors, (4301), 3486 states have internal predecessors, (4301), 474 states have call successors, (474), 329 states have call predecessors, (474), 436 states have return successors, (637), 533 states have call predecessors, (637), 472 states have call successors, (637) [2022-07-13 21:17:53,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 5412 transitions. [2022-07-13 21:17:53,724 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 5412 transitions. Word has length 178 [2022-07-13 21:17:53,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:53,724 INFO L495 AbstractCegarLoop]: Abstraction has 4347 states and 5412 transitions. [2022-07-13 21:17:53,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:17:53,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 5412 transitions. [2022-07-13 21:17:53,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:17:53,727 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:53,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:17:53,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 21:17:53,728 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:53,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:53,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1029059472, now seen corresponding path program 1 times [2022-07-13 21:17:53,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:53,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609530428] [2022-07-13 21:17:53,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:53,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:53,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:53,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:17:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:53,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:17:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:53,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:17:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:53,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:17:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:53,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:17:53,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:53,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609530428] [2022-07-13 21:17:53,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609530428] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:53,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:53,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:17:53,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35026353] [2022-07-13 21:17:53,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:53,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:17:53,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:53,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:17:53,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:17:53,870 INFO L87 Difference]: Start difference. First operand 4347 states and 5412 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:17:56,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:56,437 INFO L93 Difference]: Finished difference Result 5363 states and 7059 transitions. [2022-07-13 21:17:56,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:17:56,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:17:56,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:56,452 INFO L225 Difference]: With dead ends: 5363 [2022-07-13 21:17:56,452 INFO L226 Difference]: Without dead ends: 5006 [2022-07-13 21:17:56,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:17:56,455 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 1793 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1824 SdHoareTripleChecker+Valid, 1958 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:56,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1824 Valid, 1958 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2134 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 21:17:56,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5006 states. [2022-07-13 21:17:56,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5006 to 4723. [2022-07-13 21:17:56,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4723 states, 3783 states have (on average 1.2839016653449644) internal successors, (4857), 3835 states have internal predecessors, (4857), 495 states have call successors, (495), 335 states have call predecessors, (495), 443 states have return successors, (661), 554 states have call predecessors, (661), 493 states have call successors, (661) [2022-07-13 21:17:56,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4723 states to 4723 states and 6013 transitions. [2022-07-13 21:17:56,779 INFO L78 Accepts]: Start accepts. Automaton has 4723 states and 6013 transitions. Word has length 178 [2022-07-13 21:17:56,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:56,779 INFO L495 AbstractCegarLoop]: Abstraction has 4723 states and 6013 transitions. [2022-07-13 21:17:56,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:17:56,780 INFO L276 IsEmpty]: Start isEmpty. Operand 4723 states and 6013 transitions. [2022-07-13 21:17:56,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:17:56,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:56,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:17:56,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 21:17:56,783 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:56,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:56,783 INFO L85 PathProgramCache]: Analyzing trace with hash 153074196, now seen corresponding path program 1 times [2022-07-13 21:17:56,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:56,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921641876] [2022-07-13 21:17:56,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:56,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:17:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:17:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:17:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:17:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:17:56,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:56,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921641876] [2022-07-13 21:17:56,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921641876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:56,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:56,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:17:56,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285241597] [2022-07-13 21:17:56,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:56,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:17:56,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:56,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:17:56,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:17:56,909 INFO L87 Difference]: Start difference. First operand 4723 states and 6013 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:00,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:00,308 INFO L93 Difference]: Finished difference Result 6278 states and 8539 transitions. [2022-07-13 21:18:00,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:18:00,308 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:18:00,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:00,329 INFO L225 Difference]: With dead ends: 6278 [2022-07-13 21:18:00,329 INFO L226 Difference]: Without dead ends: 5545 [2022-07-13 21:18:00,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:18:00,335 INFO L413 NwaCegarLoop]: 1133 mSDtfsCounter, 1826 mSDsluCounter, 2109 mSDsCounter, 0 mSdLazyCounter, 3337 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1857 SdHoareTripleChecker+Valid, 3242 SdHoareTripleChecker+Invalid, 3460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 3337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:00,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1857 Valid, 3242 Invalid, 3460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 3337 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 21:18:00,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5545 states. [2022-07-13 21:18:00,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5545 to 5073. [2022-07-13 21:18:00,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5073 states, 4105 states have (on average 1.3059683313032886) internal successors, (5361), 4158 states have internal predecessors, (5361), 516 states have call successors, (516), 341 states have call predecessors, (516), 450 states have return successors, (684), 576 states have call predecessors, (684), 514 states have call successors, (684) [2022-07-13 21:18:00,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5073 states to 5073 states and 6561 transitions. [2022-07-13 21:18:00,701 INFO L78 Accepts]: Start accepts. Automaton has 5073 states and 6561 transitions. Word has length 178 [2022-07-13 21:18:00,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:00,701 INFO L495 AbstractCegarLoop]: Abstraction has 5073 states and 6561 transitions. [2022-07-13 21:18:00,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:00,701 INFO L276 IsEmpty]: Start isEmpty. Operand 5073 states and 6561 transitions. [2022-07-13 21:18:00,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:18:00,707 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:00,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:00,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 21:18:00,707 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:00,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:00,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1252117482, now seen corresponding path program 1 times [2022-07-13 21:18:00,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:00,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110243469] [2022-07-13 21:18:00,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:00,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:00,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:00,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:18:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:00,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:18:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:00,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:18:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:00,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:18:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:00,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:00,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110243469] [2022-07-13 21:18:00,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110243469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:00,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:00,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:00,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694991744] [2022-07-13 21:18:00,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:00,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:00,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:00,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:00,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:00,872 INFO L87 Difference]: Start difference. First operand 5073 states and 6561 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:02,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:02,666 INFO L93 Difference]: Finished difference Result 6646 states and 9127 transitions. [2022-07-13 21:18:02,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:18:02,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:18:02,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:02,680 INFO L225 Difference]: With dead ends: 6646 [2022-07-13 21:18:02,680 INFO L226 Difference]: Without dead ends: 5563 [2022-07-13 21:18:02,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:18:02,686 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 1356 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 1758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:02,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1388 Valid, 1943 Invalid, 1758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1635 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 21:18:02,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5563 states. [2022-07-13 21:18:02,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5563 to 5073. [2022-07-13 21:18:02,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5073 states, 4105 states have (on average 1.305237515225335) internal successors, (5358), 4158 states have internal predecessors, (5358), 516 states have call successors, (516), 341 states have call predecessors, (516), 450 states have return successors, (684), 576 states have call predecessors, (684), 514 states have call successors, (684) [2022-07-13 21:18:03,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5073 states to 5073 states and 6558 transitions. [2022-07-13 21:18:03,005 INFO L78 Accepts]: Start accepts. Automaton has 5073 states and 6558 transitions. Word has length 178 [2022-07-13 21:18:03,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:03,005 INFO L495 AbstractCegarLoop]: Abstraction has 5073 states and 6558 transitions. [2022-07-13 21:18:03,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:03,006 INFO L276 IsEmpty]: Start isEmpty. Operand 5073 states and 6558 transitions. [2022-07-13 21:18:03,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:18:03,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:03,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:03,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 21:18:03,009 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:03,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:03,010 INFO L85 PathProgramCache]: Analyzing trace with hash 642216404, now seen corresponding path program 1 times [2022-07-13 21:18:03,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:03,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287403353] [2022-07-13 21:18:03,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:03,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:03,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:03,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:18:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:03,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:18:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:03,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:18:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:03,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:18:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:03,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:03,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:03,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287403353] [2022-07-13 21:18:03,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287403353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:03,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:03,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:03,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345929320] [2022-07-13 21:18:03,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:03,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:03,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:03,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:03,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:03,149 INFO L87 Difference]: Start difference. First operand 5073 states and 6558 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:04,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:04,982 INFO L93 Difference]: Finished difference Result 6642 states and 9110 transitions. [2022-07-13 21:18:04,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:18:04,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:18:04,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:04,995 INFO L225 Difference]: With dead ends: 6642 [2022-07-13 21:18:04,995 INFO L226 Difference]: Without dead ends: 5559 [2022-07-13 21:18:05,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:18:05,001 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 1440 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 1657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:05,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1895 Invalid, 1657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1533 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 21:18:05,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5559 states. [2022-07-13 21:18:05,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5559 to 5073. [2022-07-13 21:18:05,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5073 states, 4105 states have (on average 1.3045066991473813) internal successors, (5355), 4158 states have internal predecessors, (5355), 516 states have call successors, (516), 341 states have call predecessors, (516), 450 states have return successors, (684), 576 states have call predecessors, (684), 514 states have call successors, (684) [2022-07-13 21:18:05,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5073 states to 5073 states and 6555 transitions. [2022-07-13 21:18:05,355 INFO L78 Accepts]: Start accepts. Automaton has 5073 states and 6555 transitions. Word has length 178 [2022-07-13 21:18:05,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:05,355 INFO L495 AbstractCegarLoop]: Abstraction has 5073 states and 6555 transitions. [2022-07-13 21:18:05,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:05,356 INFO L276 IsEmpty]: Start isEmpty. Operand 5073 states and 6555 transitions. [2022-07-13 21:18:05,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:18:05,359 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:05,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:05,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 21:18:05,359 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:05,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:05,360 INFO L85 PathProgramCache]: Analyzing trace with hash 2088797270, now seen corresponding path program 1 times [2022-07-13 21:18:05,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:05,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455150616] [2022-07-13 21:18:05,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:05,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:05,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:05,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:18:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:05,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:18:05,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:05,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:18:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:05,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:18:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:05,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:05,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:05,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455150616] [2022-07-13 21:18:05,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455150616] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:05,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:05,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:05,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529317615] [2022-07-13 21:18:05,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:05,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:05,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:05,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:05,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:05,496 INFO L87 Difference]: Start difference. First operand 5073 states and 6555 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:08,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:08,917 INFO L93 Difference]: Finished difference Result 7617 states and 10651 transitions. [2022-07-13 21:18:08,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:18:08,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:18:08,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:08,943 INFO L225 Difference]: With dead ends: 7617 [2022-07-13 21:18:08,944 INFO L226 Difference]: Without dead ends: 6534 [2022-07-13 21:18:08,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:18:08,952 INFO L413 NwaCegarLoop]: 1114 mSDtfsCounter, 1808 mSDsluCounter, 2109 mSDsCounter, 0 mSdLazyCounter, 3279 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 3223 SdHoareTripleChecker+Invalid, 3403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 3279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:08,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1839 Valid, 3223 Invalid, 3403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 3279 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 21:18:08,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6534 states. [2022-07-13 21:18:09,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6534 to 5782. [2022-07-13 21:18:09,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5782 states, 4758 states have (on average 1.33921815889029) internal successors, (6372), 4813 states have internal predecessors, (6372), 558 states have call successors, (558), 353 states have call predecessors, (558), 464 states have return successors, (734), 620 states have call predecessors, (734), 556 states have call successors, (734) [2022-07-13 21:18:09,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5782 states to 5782 states and 7664 transitions. [2022-07-13 21:18:09,397 INFO L78 Accepts]: Start accepts. Automaton has 5782 states and 7664 transitions. Word has length 178 [2022-07-13 21:18:09,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:09,397 INFO L495 AbstractCegarLoop]: Abstraction has 5782 states and 7664 transitions. [2022-07-13 21:18:09,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:09,398 INFO L276 IsEmpty]: Start isEmpty. Operand 5782 states and 7664 transitions. [2022-07-13 21:18:09,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:18:09,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:09,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:09,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 21:18:09,401 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:09,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:09,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1165629844, now seen corresponding path program 1 times [2022-07-13 21:18:09,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:09,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866351734] [2022-07-13 21:18:09,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:09,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:09,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:09,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:18:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:09,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:18:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:09,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:18:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:09,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:18:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:09,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:09,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:09,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866351734] [2022-07-13 21:18:09,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866351734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:09,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:09,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:09,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24749450] [2022-07-13 21:18:09,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:09,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:09,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:09,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:09,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:09,564 INFO L87 Difference]: Start difference. First operand 5782 states and 7664 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:11,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:11,497 INFO L93 Difference]: Finished difference Result 8314 states and 11749 transitions. [2022-07-13 21:18:11,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:18:11,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:18:11,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:11,520 INFO L225 Difference]: With dead ends: 8314 [2022-07-13 21:18:11,520 INFO L226 Difference]: Without dead ends: 6522 [2022-07-13 21:18:11,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:18:11,528 INFO L413 NwaCegarLoop]: 764 mSDtfsCounter, 1353 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 1727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:11,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1385 Valid, 1932 Invalid, 1727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1604 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 21:18:11,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6522 states. [2022-07-13 21:18:11,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6522 to 5782. [2022-07-13 21:18:11,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5782 states, 4758 states have (on average 1.3381672971836907) internal successors, (6367), 4813 states have internal predecessors, (6367), 558 states have call successors, (558), 353 states have call predecessors, (558), 464 states have return successors, (734), 620 states have call predecessors, (734), 556 states have call successors, (734) [2022-07-13 21:18:11,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5782 states to 5782 states and 7659 transitions. [2022-07-13 21:18:11,975 INFO L78 Accepts]: Start accepts. Automaton has 5782 states and 7659 transitions. Word has length 178 [2022-07-13 21:18:11,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:11,975 INFO L495 AbstractCegarLoop]: Abstraction has 5782 states and 7659 transitions. [2022-07-13 21:18:11,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:11,975 INFO L276 IsEmpty]: Start isEmpty. Operand 5782 states and 7659 transitions. [2022-07-13 21:18:11,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:18:11,978 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:11,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:11,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 21:18:11,978 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:11,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:11,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1551492246, now seen corresponding path program 1 times [2022-07-13 21:18:11,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:11,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368565264] [2022-07-13 21:18:11,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:11,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:12,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:12,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:18:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:12,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:18:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:12,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:18:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:12,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:18:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:12,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:12,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:12,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368565264] [2022-07-13 21:18:12,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368565264] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:12,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:12,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:12,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133324751] [2022-07-13 21:18:12,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:12,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:12,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:12,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:12,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:12,120 INFO L87 Difference]: Start difference. First operand 5782 states and 7659 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:15,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:15,491 INFO L93 Difference]: Finished difference Result 10210 states and 14728 transitions. [2022-07-13 21:18:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:18:15,491 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:18:15,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:15,512 INFO L225 Difference]: With dead ends: 10210 [2022-07-13 21:18:15,513 INFO L226 Difference]: Without dead ends: 8418 [2022-07-13 21:18:15,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:18:15,519 INFO L413 NwaCegarLoop]: 1103 mSDtfsCounter, 1800 mSDsluCounter, 2109 mSDsCounter, 0 mSdLazyCounter, 3252 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 3212 SdHoareTripleChecker+Invalid, 3376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 3252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:15,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1831 Valid, 3212 Invalid, 3376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 3252 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 21:18:15,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8418 states. [2022-07-13 21:18:16,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8418 to 7204. [2022-07-13 21:18:16,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7204 states, 6068 states have (on average 1.3841463414634145) internal successors, (8399), 6127 states have internal predecessors, (8399), 642 states have call successors, (642), 377 states have call predecessors, (642), 492 states have return successors, (840), 708 states have call predecessors, (840), 640 states have call successors, (840) [2022-07-13 21:18:16,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7204 states to 7204 states and 9881 transitions. [2022-07-13 21:18:16,038 INFO L78 Accepts]: Start accepts. Automaton has 7204 states and 9881 transitions. Word has length 178 [2022-07-13 21:18:16,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:16,039 INFO L495 AbstractCegarLoop]: Abstraction has 7204 states and 9881 transitions. [2022-07-13 21:18:16,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:16,039 INFO L276 IsEmpty]: Start isEmpty. Operand 7204 states and 9881 transitions. [2022-07-13 21:18:16,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:18:16,043 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:16,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:16,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 21:18:16,044 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:16,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:16,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1286844756, now seen corresponding path program 1 times [2022-07-13 21:18:16,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:16,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795839764] [2022-07-13 21:18:16,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:16,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:16,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:16,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:18:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:16,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:18:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:16,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:18:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:16,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:18:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:16,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:16,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:16,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795839764] [2022-07-13 21:18:16,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795839764] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:16,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:16,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:16,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731883295] [2022-07-13 21:18:16,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:16,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:16,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:16,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:16,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:16,165 INFO L87 Difference]: Start difference. First operand 7204 states and 9881 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:18,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:18,302 INFO L93 Difference]: Finished difference Result 11654 states and 17020 transitions. [2022-07-13 21:18:18,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:18:18,303 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:18:18,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:18,322 INFO L225 Difference]: With dead ends: 11654 [2022-07-13 21:18:18,323 INFO L226 Difference]: Without dead ends: 8440 [2022-07-13 21:18:18,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:18:18,331 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 1354 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 1923 SdHoareTripleChecker+Invalid, 1708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:18,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1386 Valid, 1923 Invalid, 1708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 21:18:18,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8440 states. [2022-07-13 21:18:18,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8440 to 7204. [2022-07-13 21:18:18,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7204 states, 6068 states have (on average 1.3826631509558338) internal successors, (8390), 6127 states have internal predecessors, (8390), 642 states have call successors, (642), 377 states have call predecessors, (642), 492 states have return successors, (840), 708 states have call predecessors, (840), 640 states have call successors, (840) [2022-07-13 21:18:18,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7204 states to 7204 states and 9872 transitions. [2022-07-13 21:18:18,896 INFO L78 Accepts]: Start accepts. Automaton has 7204 states and 9872 transitions. Word has length 178 [2022-07-13 21:18:18,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:18,896 INFO L495 AbstractCegarLoop]: Abstraction has 7204 states and 9872 transitions. [2022-07-13 21:18:18,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:18,897 INFO L276 IsEmpty]: Start isEmpty. Operand 7204 states and 9872 transitions. [2022-07-13 21:18:18,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:18:18,900 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:18,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:18,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 21:18:18,900 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:18,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:18,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1076996906, now seen corresponding path program 1 times [2022-07-13 21:18:18,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:18,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807542455] [2022-07-13 21:18:18,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:18,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:18,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:18,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:18:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:18:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:18:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:18:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:19,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:19,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807542455] [2022-07-13 21:18:19,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807542455] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:19,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:19,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:19,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907355898] [2022-07-13 21:18:19,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:19,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:19,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:19,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:19,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:19,027 INFO L87 Difference]: Start difference. First operand 7204 states and 9872 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:20,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:20,879 INFO L93 Difference]: Finished difference Result 11634 states and 16953 transitions. [2022-07-13 21:18:20,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:18:20,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:18:20,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:20,903 INFO L225 Difference]: With dead ends: 11634 [2022-07-13 21:18:20,904 INFO L226 Difference]: Without dead ends: 8420 [2022-07-13 21:18:20,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:18:20,916 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 1572 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 1565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:20,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 1664 Invalid, 1565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 21:18:20,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8420 states. [2022-07-13 21:18:21,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8420 to 7204. [2022-07-13 21:18:21,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7204 states, 6068 states have (on average 1.381179960448253) internal successors, (8381), 6127 states have internal predecessors, (8381), 642 states have call successors, (642), 377 states have call predecessors, (642), 492 states have return successors, (840), 708 states have call predecessors, (840), 640 states have call successors, (840) [2022-07-13 21:18:21,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7204 states to 7204 states and 9863 transitions. [2022-07-13 21:18:21,469 INFO L78 Accepts]: Start accepts. Automaton has 7204 states and 9863 transitions. Word has length 178 [2022-07-13 21:18:21,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:21,469 INFO L495 AbstractCegarLoop]: Abstraction has 7204 states and 9863 transitions. [2022-07-13 21:18:21,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:21,469 INFO L276 IsEmpty]: Start isEmpty. Operand 7204 states and 9863 transitions. [2022-07-13 21:18:21,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:18:21,472 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:21,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:21,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 21:18:21,473 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:21,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:21,473 INFO L85 PathProgramCache]: Analyzing trace with hash 819982552, now seen corresponding path program 1 times [2022-07-13 21:18:21,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:21,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697615521] [2022-07-13 21:18:21,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:21,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:21,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:21,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:21,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:18:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:21,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:18:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:21,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:18:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:21,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:18:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:21,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:21,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:21,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697615521] [2022-07-13 21:18:21,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697615521] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:21,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:21,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:21,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475644731] [2022-07-13 21:18:21,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:21,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:21,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:21,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:21,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:21,594 INFO L87 Difference]: Start difference. First operand 7204 states and 9863 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:23,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:23,736 INFO L93 Difference]: Finished difference Result 11624 states and 16906 transitions. [2022-07-13 21:18:23,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:18:23,737 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:18:23,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:23,759 INFO L225 Difference]: With dead ends: 11624 [2022-07-13 21:18:23,759 INFO L226 Difference]: Without dead ends: 8410 [2022-07-13 21:18:23,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:18:23,771 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 1349 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 1678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:23,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1381 Valid, 1913 Invalid, 1678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 21:18:23,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8410 states. [2022-07-13 21:18:24,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8410 to 7204. [2022-07-13 21:18:24,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7204 states, 6068 states have (on average 1.3796967699406724) internal successors, (8372), 6127 states have internal predecessors, (8372), 642 states have call successors, (642), 377 states have call predecessors, (642), 492 states have return successors, (840), 708 states have call predecessors, (840), 640 states have call successors, (840) [2022-07-13 21:18:24,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7204 states to 7204 states and 9854 transitions. [2022-07-13 21:18:24,331 INFO L78 Accepts]: Start accepts. Automaton has 7204 states and 9854 transitions. Word has length 178 [2022-07-13 21:18:24,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:24,332 INFO L495 AbstractCegarLoop]: Abstraction has 7204 states and 9854 transitions. [2022-07-13 21:18:24,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:24,332 INFO L276 IsEmpty]: Start isEmpty. Operand 7204 states and 9854 transitions. [2022-07-13 21:18:24,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:18:24,335 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:24,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:24,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 21:18:24,335 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:24,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:24,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1158270102, now seen corresponding path program 1 times [2022-07-13 21:18:24,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:24,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838992831] [2022-07-13 21:18:24,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:24,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:24,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:24,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:18:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:24,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:18:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:24,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:18:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:24,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:18:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:24,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:24,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:24,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838992831] [2022-07-13 21:18:24,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838992831] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:24,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:24,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:24,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457481448] [2022-07-13 21:18:24,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:24,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:24,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:24,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:24,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:24,461 INFO L87 Difference]: Start difference. First operand 7204 states and 9854 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:28,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:28,170 INFO L93 Difference]: Finished difference Result 15366 states and 22732 transitions. [2022-07-13 21:18:28,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:18:28,170 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:18:28,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:28,196 INFO L225 Difference]: With dead ends: 15366 [2022-07-13 21:18:28,196 INFO L226 Difference]: Without dead ends: 12152 [2022-07-13 21:18:28,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:18:28,206 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 1864 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 2869 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 3038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 2869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:28,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1895 Valid, 2293 Invalid, 3038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 2869 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 21:18:28,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12152 states. [2022-07-13 21:18:28,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12152 to 10089. [2022-07-13 21:18:28,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10089 states, 8729 states have (on average 1.428113185931951) internal successors, (12466), 8796 states have internal predecessors, (12466), 810 states have call successors, (810), 425 states have call predecessors, (810), 548 states have return successors, (1070), 884 states have call predecessors, (1070), 808 states have call successors, (1070) [2022-07-13 21:18:28,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10089 states to 10089 states and 14346 transitions. [2022-07-13 21:18:28,950 INFO L78 Accepts]: Start accepts. Automaton has 10089 states and 14346 transitions. Word has length 178 [2022-07-13 21:18:28,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:28,951 INFO L495 AbstractCegarLoop]: Abstraction has 10089 states and 14346 transitions. [2022-07-13 21:18:28,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:28,951 INFO L276 IsEmpty]: Start isEmpty. Operand 10089 states and 14346 transitions. [2022-07-13 21:18:28,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:18:28,955 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:28,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:28,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 21:18:28,956 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:28,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:28,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1584824600, now seen corresponding path program 1 times [2022-07-13 21:18:28,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:28,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124499969] [2022-07-13 21:18:28,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:28,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:28,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:29,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:18:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:29,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:18:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:29,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:18:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:29,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:18:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:29,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:29,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:29,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124499969] [2022-07-13 21:18:29,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124499969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:29,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:29,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:29,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076849041] [2022-07-13 21:18:29,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:29,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:29,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:29,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:29,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:29,108 INFO L87 Difference]: Start difference. First operand 10089 states and 14346 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:31,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:31,510 INFO L93 Difference]: Finished difference Result 18310 states and 27413 transitions. [2022-07-13 21:18:31,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:18:31,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:18:31,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:31,542 INFO L225 Difference]: With dead ends: 18310 [2022-07-13 21:18:31,542 INFO L226 Difference]: Without dead ends: 12211 [2022-07-13 21:18:31,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:18:31,558 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 1567 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1599 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:31,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1599 Valid, 1651 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 21:18:31,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12211 states. [2022-07-13 21:18:32,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12211 to 10089. [2022-07-13 21:18:32,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10089 states, 8729 states have (on average 1.4261656547141712) internal successors, (12449), 8796 states have internal predecessors, (12449), 810 states have call successors, (810), 425 states have call predecessors, (810), 548 states have return successors, (1070), 884 states have call predecessors, (1070), 808 states have call successors, (1070) [2022-07-13 21:18:32,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10089 states to 10089 states and 14329 transitions. [2022-07-13 21:18:32,467 INFO L78 Accepts]: Start accepts. Automaton has 10089 states and 14329 transitions. Word has length 178 [2022-07-13 21:18:32,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:32,467 INFO L495 AbstractCegarLoop]: Abstraction has 10089 states and 14329 transitions. [2022-07-13 21:18:32,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:32,467 INFO L276 IsEmpty]: Start isEmpty. Operand 10089 states and 14329 transitions. [2022-07-13 21:18:32,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:18:32,470 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:32,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:32,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 21:18:32,470 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:32,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:32,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1044395094, now seen corresponding path program 1 times [2022-07-13 21:18:32,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:32,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72697285] [2022-07-13 21:18:32,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:32,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:32,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:32,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:18:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:32,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:18:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:32,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:18:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:32,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:18:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:32,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:32,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:32,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72697285] [2022-07-13 21:18:32,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72697285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:32,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:32,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:32,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724852304] [2022-07-13 21:18:32,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:32,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:32,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:32,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:32,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:32,595 INFO L87 Difference]: Start difference. First operand 10089 states and 14329 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:38,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:38,264 INFO L93 Difference]: Finished difference Result 28383 states and 43048 transitions. [2022-07-13 21:18:38,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:18:38,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:18:38,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:38,311 INFO L225 Difference]: With dead ends: 28383 [2022-07-13 21:18:38,311 INFO L226 Difference]: Without dead ends: 22284 [2022-07-13 21:18:38,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:18:38,330 INFO L413 NwaCegarLoop]: 1060 mSDtfsCounter, 2215 mSDsluCounter, 2098 mSDsCounter, 0 mSdLazyCounter, 3139 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2259 SdHoareTripleChecker+Valid, 3158 SdHoareTripleChecker+Invalid, 3271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 3139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:38,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2259 Valid, 3158 Invalid, 3271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 3139 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 21:18:38,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22284 states. [2022-07-13 21:18:39,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22284 to 15755. [2022-07-13 21:18:39,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15755 states, 13963 states have (on average 1.4670915992265272) internal successors, (20485), 14046 states have internal predecessors, (20485), 1130 states have call successors, (1130), 521 states have call predecessors, (1130), 660 states have return successors, (1568), 1220 states have call predecessors, (1568), 1128 states have call successors, (1568) [2022-07-13 21:18:39,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15755 states to 15755 states and 23183 transitions. [2022-07-13 21:18:39,766 INFO L78 Accepts]: Start accepts. Automaton has 15755 states and 23183 transitions. Word has length 178 [2022-07-13 21:18:39,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:39,767 INFO L495 AbstractCegarLoop]: Abstraction has 15755 states and 23183 transitions. [2022-07-13 21:18:39,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:39,767 INFO L276 IsEmpty]: Start isEmpty. Operand 15755 states and 23183 transitions. [2022-07-13 21:18:39,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:18:39,773 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:39,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:39,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 21:18:39,774 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:39,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:39,775 INFO L85 PathProgramCache]: Analyzing trace with hash 888414552, now seen corresponding path program 1 times [2022-07-13 21:18:39,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:39,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996008598] [2022-07-13 21:18:39,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:39,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:39,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:39,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:18:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:39,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:18:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:39,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:18:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:39,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:18:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:39,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:39,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:39,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996008598] [2022-07-13 21:18:39,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996008598] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:39,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:39,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:39,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82502741] [2022-07-13 21:18:39,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:39,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:39,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:39,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:39,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:39,896 INFO L87 Difference]: Start difference. First operand 15755 states and 23183 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:48,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:48,461 INFO L93 Difference]: Finished difference Result 51007 states and 78672 transitions. [2022-07-13 21:18:48,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:18:48,463 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:18:48,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:48,588 INFO L225 Difference]: With dead ends: 51007 [2022-07-13 21:18:48,589 INFO L226 Difference]: Without dead ends: 39242 [2022-07-13 21:18:48,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:18:48,632 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 1871 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 3646 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1901 SdHoareTripleChecker+Valid, 3329 SdHoareTripleChecker+Invalid, 3775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 3646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:48,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1901 Valid, 3329 Invalid, 3775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 3646 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 21:18:48,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39242 states. [2022-07-13 21:18:51,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39242 to 27148. [2022-07-13 21:18:51,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27148 states, 24508 states have (on average 1.497266198792231) internal successors, (36695), 24623 states have internal predecessors, (36695), 1754 states have call successors, (1754), 713 states have call predecessors, (1754), 884 states have return successors, (2710), 1876 states have call predecessors, (2710), 1752 states have call successors, (2710) [2022-07-13 21:18:51,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27148 states to 27148 states and 41159 transitions. [2022-07-13 21:18:51,589 INFO L78 Accepts]: Start accepts. Automaton has 27148 states and 41159 transitions. Word has length 178 [2022-07-13 21:18:51,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:51,589 INFO L495 AbstractCegarLoop]: Abstraction has 27148 states and 41159 transitions. [2022-07-13 21:18:51,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:51,590 INFO L276 IsEmpty]: Start isEmpty. Operand 27148 states and 41159 transitions. [2022-07-13 21:18:51,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:18:51,598 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:51,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:51,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 21:18:51,599 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:51,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:51,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1299024918, now seen corresponding path program 1 times [2022-07-13 21:18:51,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:51,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98983536] [2022-07-13 21:18:51,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:51,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:51,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:51,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:18:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:51,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:18:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:51,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:18:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:51,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:18:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:51,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:51,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:51,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98983536] [2022-07-13 21:18:51,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98983536] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:51,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:51,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:51,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652800139] [2022-07-13 21:18:51,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:51,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:51,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:51,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:51,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:51,737 INFO L87 Difference]: Start difference. First operand 27148 states and 41159 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:18:57,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:57,600 INFO L93 Difference]: Finished difference Result 57718 states and 90170 transitions. [2022-07-13 21:18:57,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:18:57,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:18:57,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:57,693 INFO L225 Difference]: With dead ends: 57718 [2022-07-13 21:18:57,693 INFO L226 Difference]: Without dead ends: 34560 [2022-07-13 21:18:57,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:18:57,743 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 1348 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:57,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 1892 Invalid, 1637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1506 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 21:18:57,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34560 states. [2022-07-13 21:19:00,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34560 to 27148. [2022-07-13 21:19:00,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27148 states, 24508 states have (on average 1.4946140035906643) internal successors, (36630), 24623 states have internal predecessors, (36630), 1754 states have call successors, (1754), 713 states have call predecessors, (1754), 884 states have return successors, (2710), 1876 states have call predecessors, (2710), 1752 states have call successors, (2710) [2022-07-13 21:19:00,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27148 states to 27148 states and 41094 transitions. [2022-07-13 21:19:00,549 INFO L78 Accepts]: Start accepts. Automaton has 27148 states and 41094 transitions. Word has length 178 [2022-07-13 21:19:00,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:19:00,550 INFO L495 AbstractCegarLoop]: Abstraction has 27148 states and 41094 transitions. [2022-07-13 21:19:00,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:19:00,550 INFO L276 IsEmpty]: Start isEmpty. Operand 27148 states and 41094 transitions. [2022-07-13 21:19:00,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:19:00,558 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:19:00,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:19:00,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 21:19:00,558 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:19:00,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:19:00,559 INFO L85 PathProgramCache]: Analyzing trace with hash -488844904, now seen corresponding path program 1 times [2022-07-13 21:19:00,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:19:00,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457582466] [2022-07-13 21:19:00,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:19:00,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:19:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:00,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:19:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:00,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:19:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:00,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:19:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:00,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:19:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:00,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:19:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:00,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:19:00,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:19:00,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457582466] [2022-07-13 21:19:00,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457582466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:19:00,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:19:00,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:19:00,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991276159] [2022-07-13 21:19:00,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:19:00,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:19:00,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:19:00,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:19:00,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:19:00,679 INFO L87 Difference]: Start difference. First operand 27148 states and 41094 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:19:14,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:19:14,672 INFO L93 Difference]: Finished difference Result 93946 states and 146826 transitions. [2022-07-13 21:19:14,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:19:14,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:19:14,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:19:14,880 INFO L225 Difference]: With dead ends: 93946 [2022-07-13 21:19:14,880 INFO L226 Difference]: Without dead ends: 70788 [2022-07-13 21:19:14,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:19:14,946 INFO L413 NwaCegarLoop]: 1163 mSDtfsCounter, 1832 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 3501 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1862 SdHoareTripleChecker+Valid, 3264 SdHoareTripleChecker+Invalid, 3633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 3501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:19:14,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1862 Valid, 3264 Invalid, 3633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 3501 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 21:19:14,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70788 states. [2022-07-13 21:19:20,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70788 to 50031. [2022-07-13 21:19:20,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50031 states, 45727 states have (on average 1.5135915323550637) internal successors, (69212), 45906 states have internal predecessors, (69212), 2970 states have call successors, (2970), 1097 states have call predecessors, (2970), 1332 states have return successors, (5448), 3156 states have call predecessors, (5448), 2968 states have call successors, (5448) [2022-07-13 21:19:20,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50031 states to 50031 states and 77630 transitions. [2022-07-13 21:19:20,735 INFO L78 Accepts]: Start accepts. Automaton has 50031 states and 77630 transitions. Word has length 178 [2022-07-13 21:19:20,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:19:20,735 INFO L495 AbstractCegarLoop]: Abstraction has 50031 states and 77630 transitions. [2022-07-13 21:19:20,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:19:20,736 INFO L276 IsEmpty]: Start isEmpty. Operand 50031 states and 77630 transitions. [2022-07-13 21:19:20,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:19:20,751 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:19:20,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:19:20,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 21:19:20,751 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:19:20,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:19:20,752 INFO L85 PathProgramCache]: Analyzing trace with hash -419197030, now seen corresponding path program 1 times [2022-07-13 21:19:20,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:19:20,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093335624] [2022-07-13 21:19:20,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:19:20,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:19:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:20,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:19:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:20,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:19:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:20,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:19:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:20,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:19:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:20,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:19:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:20,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:19:20,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:19:20,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093335624] [2022-07-13 21:19:20,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093335624] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:19:20,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:19:20,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:19:20,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922720832] [2022-07-13 21:19:20,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:19:20,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:19:20,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:19:20,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:19:20,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:19:20,903 INFO L87 Difference]: Start difference. First operand 50031 states and 77630 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:19:45,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:19:45,350 INFO L93 Difference]: Finished difference Result 180699 states and 286548 transitions. [2022-07-13 21:19:45,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:19:45,350 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:19:45,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:19:45,806 INFO L225 Difference]: With dead ends: 180699 [2022-07-13 21:19:45,806 INFO L226 Difference]: Without dead ends: 134658 [2022-07-13 21:19:45,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:19:45,943 INFO L413 NwaCegarLoop]: 1034 mSDtfsCounter, 2010 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 3084 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2054 SdHoareTripleChecker+Valid, 3135 SdHoareTripleChecker+Invalid, 3219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 3084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:19:45,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2054 Valid, 3135 Invalid, 3219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 3084 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 21:19:46,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134658 states. [2022-07-13 21:19:57,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134658 to 95728. [2022-07-13 21:19:57,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95728 states, 88160 states have (on average 1.5248411978221417) internal successors, (134430), 88467 states have internal predecessors, (134430), 5338 states have call successors, (5338), 1865 states have call predecessors, (5338), 2228 states have return successors, (12318), 5652 states have call predecessors, (12318), 5336 states have call successors, (12318) [2022-07-13 21:19:57,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95728 states to 95728 states and 152086 transitions. [2022-07-13 21:19:57,561 INFO L78 Accepts]: Start accepts. Automaton has 95728 states and 152086 transitions. Word has length 178 [2022-07-13 21:19:57,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:19:57,561 INFO L495 AbstractCegarLoop]: Abstraction has 95728 states and 152086 transitions. [2022-07-13 21:19:57,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-07-13 21:19:57,561 INFO L276 IsEmpty]: Start isEmpty. Operand 95728 states and 152086 transitions. [2022-07-13 21:19:57,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:19:57,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:19:57,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:19:57,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 21:19:57,589 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:19:57,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:19:57,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1308328, now seen corresponding path program 1 times [2022-07-13 21:19:57,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:19:57,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383969362] [2022-07-13 21:19:57,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:19:57,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:19:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:57,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:19:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:57,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:19:57,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:57,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:19:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:57,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:19:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:57,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:19:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:19:57,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:19:57,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383969362] [2022-07-13 21:19:57,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383969362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:19:57,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:19:57,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:19:57,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820671459] [2022-07-13 21:19:57,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:19:57,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:19:57,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:19:57,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:19:57,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:19:57,701 INFO L87 Difference]: Start difference. First operand 95728 states and 152086 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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)