./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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.07.cil-1.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 b08ac6f553c71235d6c242059db3dcace1924bc9c3a272f401632c3f1b127664 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:36:00,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:36:00,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:36:00,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:36:00,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:36:00,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:36:00,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:36:00,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:36:00,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:36:00,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:36:00,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:36:00,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:36:00,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:36:00,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:36:00,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:36:00,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:36:00,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:36:00,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:36:00,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:36:00,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:36:00,598 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:36:00,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:36:00,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:36:00,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:36:00,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:36:00,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:36:00,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:36:00,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:36:00,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:36:00,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:36:00,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:36:00,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:36:00,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:36:00,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:36:00,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:36:00,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:36:00,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:36:00,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:36:00,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:36:00,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:36:00,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:36:00,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:36:00,609 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:36:00,627 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:36:00,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:36:00,627 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:36:00,627 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:36:00,628 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:36:00,628 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:36:00,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:36:00,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:36:00,629 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:36:00,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:36:00,629 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:36:00,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:36:00,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:36:00,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:36:00,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:36:00,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:36:00,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:36:00,630 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:36:00,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:36:00,630 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:36:00,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:36:00,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:36:00,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:36:00,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:36:00,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:36:00,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:36:00,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:36:00,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:36:00,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:36:00,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:36:00,632 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:36:00,632 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:36:00,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:36:00,633 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b08ac6f553c71235d6c242059db3dcace1924bc9c3a272f401632c3f1b127664 [2022-07-12 09:36:00,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:36:00,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:36:00,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:36:00,863 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:36:00,863 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:36:00,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c [2022-07-12 09:36:00,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/439a67381/a378bdc4d71a4725a4516cdf4538f56e/FLAG634850978 [2022-07-12 09:36:01,296 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:36:01,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c [2022-07-12 09:36:01,309 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/439a67381/a378bdc4d71a4725a4516cdf4538f56e/FLAG634850978 [2022-07-12 09:36:01,320 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/439a67381/a378bdc4d71a4725a4516cdf4538f56e [2022-07-12 09:36:01,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:36:01,322 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:36:01,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:36:01,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:36:01,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:36:01,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:36:01" (1/1) ... [2022-07-12 09:36:01,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b9b74b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:01, skipping insertion in model container [2022-07-12 09:36:01,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:36:01" (1/1) ... [2022-07-12 09:36:01,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:36:01,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:36:01,481 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.07.cil-1.c[911,924] [2022-07-12 09:36:01,549 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.07.cil-1.c[8416,8429] [2022-07-12 09:36:01,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:36:01,626 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:36:01,641 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.07.cil-1.c[911,924] [2022-07-12 09:36:01,659 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c[8416,8429] [2022-07-12 09:36:01,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:36:01,693 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:36:01,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:01 WrapperNode [2022-07-12 09:36:01,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:36:01,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:36:01,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:36:01,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:36:01,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:01" (1/1) ... [2022-07-12 09:36:01,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:01" (1/1) ... [2022-07-12 09:36:01,743 INFO L137 Inliner]: procedures = 69, calls = 82, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 788 [2022-07-12 09:36:01,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:36:01,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:36:01,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:36:01,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:36:01,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:01" (1/1) ... [2022-07-12 09:36:01,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:01" (1/1) ... [2022-07-12 09:36:01,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:01" (1/1) ... [2022-07-12 09:36:01,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:01" (1/1) ... [2022-07-12 09:36:01,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:01" (1/1) ... [2022-07-12 09:36:01,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:01" (1/1) ... [2022-07-12 09:36:01,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:01" (1/1) ... [2022-07-12 09:36:01,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:36:01,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:36:01,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:36:01,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:36:01,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:01" (1/1) ... [2022-07-12 09:36:01,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:36:01,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:36:01,818 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) [2022-07-12 09:36:01,820 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 [2022-07-12 09:36:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:36:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 09:36:01,858 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 09:36:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-12 09:36:01,859 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-12 09:36:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-12 09:36:01,859 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-12 09:36:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-12 09:36:01,860 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-12 09:36:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-12 09:36:01,860 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-12 09:36:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-12 09:36:01,860 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-12 09:36:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-12 09:36:01,861 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-12 09:36:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-12 09:36:01,861 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-12 09:36:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-12 09:36:01,861 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-12 09:36:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-12 09:36:01,862 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-12 09:36:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-12 09:36:01,862 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-12 09:36:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:36:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-12 09:36:01,862 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-12 09:36:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-12 09:36:01,863 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-12 09:36:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:36:01,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:36:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-12 09:36:01,863 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-12 09:36:01,982 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:36:01,984 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:36:02,454 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-12 09:36:02,455 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; [2022-07-12 09:36:02,504 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:36:02,512 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:36:02,512 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-07-12 09:36:02,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:36:02 BoogieIcfgContainer [2022-07-12 09:36:02,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:36:02,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:36:02,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:36:02,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:36:02,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:36:01" (1/3) ... [2022-07-12 09:36:02,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ef7f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:36:02, skipping insertion in model container [2022-07-12 09:36:02,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:01" (2/3) ... [2022-07-12 09:36:02,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ef7f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:36:02, skipping insertion in model container [2022-07-12 09:36:02,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:36:02" (3/3) ... [2022-07-12 09:36:02,519 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.07.cil-1.c [2022-07-12 09:36:02,528 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:36:02,528 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:36:02,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:36:02,575 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@35749bfd, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@68a46f5a [2022-07-12 09:36:02,575 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:36:02,579 INFO L276 IsEmpty]: Start isEmpty. Operand has 374 states, 320 states have (on average 1.6125) internal successors, (516), 326 states have internal predecessors, (516), 37 states have call successors, (37), 14 states have call predecessors, (37), 14 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-12 09:36:02,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:36:02,587 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:02,588 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] [2022-07-12 09:36:02,588 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:02,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:02,591 INFO L85 PathProgramCache]: Analyzing trace with hash -334337363, now seen corresponding path program 1 times [2022-07-12 09:36:02,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:02,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684571614] [2022-07-12 09:36:02,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:02,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:02,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:02,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:36:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:02,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:02,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:36:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:02,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:36:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:02,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:36:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:02,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:36:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:02,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:02,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:02,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684571614] [2022-07-12 09:36:02,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684571614] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:02,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:02,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:36:02,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202250649] [2022-07-12 09:36:02,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:02,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:36:02,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:02,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:36:02,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:36:02,864 INFO L87 Difference]: Start difference. First operand has 374 states, 320 states have (on average 1.6125) internal successors, (516), 326 states have internal predecessors, (516), 37 states have call successors, (37), 14 states have call predecessors, (37), 14 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:36:03,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:03,442 INFO L93 Difference]: Finished difference Result 743 states and 1170 transitions. [2022-07-12 09:36:03,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 09:36:03,444 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 [2022-07-12 09:36:03,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:03,454 INFO L225 Difference]: With dead ends: 743 [2022-07-12 09:36:03,455 INFO L226 Difference]: Without dead ends: 382 [2022-07-12 09:36:03,459 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 [2022-07-12 09:36:03,461 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 586 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:03,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 1507 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 09:36:03,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-07-12 09:36:03,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 364. [2022-07-12 09:36:03,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 312 states have (on average 1.5224358974358974) internal successors, (475), 316 states have internal predecessors, (475), 37 states have call successors, (37), 14 states have call predecessors, (37), 13 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-12 09:36:03,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 547 transitions. [2022-07-12 09:36:03,554 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 547 transitions. Word has length 65 [2022-07-12 09:36:03,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:03,555 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 547 transitions. [2022-07-12 09:36:03,556 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) [2022-07-12 09:36:03,556 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 547 transitions. [2022-07-12 09:36:03,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:36:03,565 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:03,568 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] [2022-07-12 09:36:03,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:36:03,568 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:03,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:03,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1721122773, now seen corresponding path program 1 times [2022-07-12 09:36:03,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:03,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64690714] [2022-07-12 09:36:03,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:03,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:03,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:03,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:36:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:03,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:03,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:36:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:03,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:36:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:03,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:36:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:03,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:36:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:03,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:03,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:03,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64690714] [2022-07-12 09:36:03,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64690714] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:03,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:03,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:36:03,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166146324] [2022-07-12 09:36:03,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:03,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:36:03,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:03,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:36:03,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:36:03,729 INFO L87 Difference]: Start difference. First operand 364 states and 547 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) [2022-07-12 09:36:04,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:04,439 INFO L93 Difference]: Finished difference Result 619 states and 916 transitions. [2022-07-12 09:36:04,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:36:04,439 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 [2022-07-12 09:36:04,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:04,446 INFO L225 Difference]: With dead ends: 619 [2022-07-12 09:36:04,446 INFO L226 Difference]: Without dead ends: 515 [2022-07-12 09:36:04,449 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 [2022-07-12 09:36:04,450 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 974 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:04,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 1812 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:36:04,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-07-12 09:36:04,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 476. [2022-07-12 09:36:04,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 402 states have (on average 1.4950248756218905) internal successors, (601), 408 states have internal predecessors, (601), 50 states have call successors, (50), 21 states have call predecessors, (50), 22 states have return successors, (53), 49 states have call predecessors, (53), 48 states have call successors, (53) [2022-07-12 09:36:04,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 704 transitions. [2022-07-12 09:36:04,503 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 704 transitions. Word has length 65 [2022-07-12 09:36:04,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:04,503 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 704 transitions. [2022-07-12 09:36:04,503 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) [2022-07-12 09:36:04,503 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 704 transitions. [2022-07-12 09:36:04,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:36:04,506 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:04,506 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] [2022-07-12 09:36:04,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:36:04,506 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:04,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:04,507 INFO L85 PathProgramCache]: Analyzing trace with hash -42234133, now seen corresponding path program 1 times [2022-07-12 09:36:04,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:04,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216362141] [2022-07-12 09:36:04,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:04,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:04,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:04,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:36:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:04,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:04,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:36:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:04,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:36:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:04,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:36:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:04,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:36:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:04,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:04,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:04,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216362141] [2022-07-12 09:36:04,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216362141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:04,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:04,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:36:04,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999100169] [2022-07-12 09:36:04,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:04,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:36:04,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:04,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:36:04,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:36:04,625 INFO L87 Difference]: Start difference. First operand 476 states and 704 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) [2022-07-12 09:36:05,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:05,467 INFO L93 Difference]: Finished difference Result 873 states and 1269 transitions. [2022-07-12 09:36:05,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 09:36:05,468 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 [2022-07-12 09:36:05,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:05,473 INFO L225 Difference]: With dead ends: 873 [2022-07-12 09:36:05,474 INFO L226 Difference]: Without dead ends: 664 [2022-07-12 09:36:05,478 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 [2022-07-12 09:36:05,482 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 1064 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:05,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 2219 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:36:05,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-07-12 09:36:05,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 588. [2022-07-12 09:36:05,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 492 states have (on average 1.475609756097561) internal successors, (726), 500 states have internal predecessors, (726), 63 states have call successors, (63), 28 states have call predecessors, (63), 31 states have return successors, (74), 63 states have call predecessors, (74), 61 states have call successors, (74) [2022-07-12 09:36:05,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 863 transitions. [2022-07-12 09:36:05,527 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 863 transitions. Word has length 65 [2022-07-12 09:36:05,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:05,527 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 863 transitions. [2022-07-12 09:36:05,528 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) [2022-07-12 09:36:05,528 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 863 transitions. [2022-07-12 09:36:05,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:36:05,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:05,529 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] [2022-07-12 09:36:05,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:36:05,529 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:05,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:05,530 INFO L85 PathProgramCache]: Analyzing trace with hash -2070820243, now seen corresponding path program 1 times [2022-07-12 09:36:05,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:05,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877486657] [2022-07-12 09:36:05,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:05,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:05,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:05,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:36:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:05,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:05,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:36:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:05,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:36:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:05,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:36:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:05,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:36:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:05,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:05,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:05,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877486657] [2022-07-12 09:36:05,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877486657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:05,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:05,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 09:36:05,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479797765] [2022-07-12 09:36:05,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:05,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:36:05,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:05,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:36:05,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:36:05,645 INFO L87 Difference]: Start difference. First operand 588 states and 863 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) [2022-07-12 09:36:07,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:07,082 INFO L93 Difference]: Finished difference Result 2134 states and 3060 transitions. [2022-07-12 09:36:07,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 09:36:07,083 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 [2022-07-12 09:36:07,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:07,093 INFO L225 Difference]: With dead ends: 2134 [2022-07-12 09:36:07,093 INFO L226 Difference]: Without dead ends: 1801 [2022-07-12 09:36:07,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 09:36:07,100 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 2953 mSDsluCounter, 1880 mSDsCounter, 0 mSdLazyCounter, 1790 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2971 SdHoareTripleChecker+Valid, 2565 SdHoareTripleChecker+Invalid, 2419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 1790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:07,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2971 Valid, 2565 Invalid, 2419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 1790 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:36:07,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2022-07-12 09:36:07,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1641. [2022-07-12 09:36:07,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1340 states have (on average 1.3970149253731343) internal successors, (1872), 1363 states have internal predecessors, (1872), 173 states have call successors, (173), 111 states have call predecessors, (173), 126 states have return successors, (207), 169 states have call predecessors, (207), 171 states have call successors, (207) [2022-07-12 09:36:07,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2252 transitions. [2022-07-12 09:36:07,191 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2252 transitions. Word has length 65 [2022-07-12 09:36:07,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:07,192 INFO L495 AbstractCegarLoop]: Abstraction has 1641 states and 2252 transitions. [2022-07-12 09:36:07,192 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) [2022-07-12 09:36:07,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2252 transitions. [2022-07-12 09:36:07,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:36:07,193 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:07,193 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] [2022-07-12 09:36:07,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:36:07,194 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:07,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:07,194 INFO L85 PathProgramCache]: Analyzing trace with hash 160145276, now seen corresponding path program 1 times [2022-07-12 09:36:07,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:07,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128561053] [2022-07-12 09:36:07,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:07,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:07,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:07,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:36:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:07,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:07,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:36:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:07,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:36:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:07,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 09:36:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:07,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:36:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:07,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:07,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128561053] [2022-07-12 09:36:07,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128561053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:07,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:07,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:36:07,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134110983] [2022-07-12 09:36:07,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:07,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:36:07,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:07,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:36:07,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:36:07,279 INFO L87 Difference]: Start difference. First operand 1641 states and 2252 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) [2022-07-12 09:36:07,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:07,988 INFO L93 Difference]: Finished difference Result 3257 states and 4472 transitions. [2022-07-12 09:36:07,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:36:07,988 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 [2022-07-12 09:36:07,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:07,995 INFO L225 Difference]: With dead ends: 3257 [2022-07-12 09:36:07,995 INFO L226 Difference]: Without dead ends: 1877 [2022-07-12 09:36:07,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:36:07,998 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 682 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 2145 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:07,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 2145 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:36:08,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2022-07-12 09:36:08,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1711. [2022-07-12 09:36:08,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1396 states have (on average 1.3810888252148996) internal successors, (1928), 1419 states have internal predecessors, (1928), 173 states have call successors, (173), 111 states have call predecessors, (173), 140 states have return successors, (221), 183 states have call predecessors, (221), 171 states have call successors, (221) [2022-07-12 09:36:08,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2322 transitions. [2022-07-12 09:36:08,060 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2322 transitions. Word has length 66 [2022-07-12 09:36:08,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:08,061 INFO L495 AbstractCegarLoop]: Abstraction has 1711 states and 2322 transitions. [2022-07-12 09:36:08,061 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) [2022-07-12 09:36:08,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2322 transitions. [2022-07-12 09:36:08,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:36:08,062 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:08,062 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] [2022-07-12 09:36:08,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:36:08,062 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:08,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:08,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1226058118, now seen corresponding path program 1 times [2022-07-12 09:36:08,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:08,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953102784] [2022-07-12 09:36:08,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:08,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:08,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:08,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:36:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:08,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:08,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:36:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:08,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:36:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:08,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 09:36:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:08,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:36:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:08,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:08,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:08,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953102784] [2022-07-12 09:36:08,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953102784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:08,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:08,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:36:08,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166971890] [2022-07-12 09:36:08,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:08,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:36:08,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:08,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:36:08,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:36:08,182 INFO L87 Difference]: Start difference. First operand 1711 states and 2322 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) [2022-07-12 09:36:08,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:08,954 INFO L93 Difference]: Finished difference Result 3325 states and 4495 transitions. [2022-07-12 09:36:08,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:36:08,954 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 [2022-07-12 09:36:08,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:08,964 INFO L225 Difference]: With dead ends: 3325 [2022-07-12 09:36:08,964 INFO L226 Difference]: Without dead ends: 1875 [2022-07-12 09:36:08,968 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 [2022-07-12 09:36:08,970 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 466 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 2388 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:08,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 2388 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1305 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:36:08,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2022-07-12 09:36:09,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1751. [2022-07-12 09:36:09,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1751 states, 1428 states have (on average 1.3683473389355743) internal successors, (1954), 1451 states have internal predecessors, (1954), 173 states have call successors, (173), 111 states have call predecessors, (173), 148 states have return successors, (229), 191 states have call predecessors, (229), 171 states have call successors, (229) [2022-07-12 09:36:09,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2356 transitions. [2022-07-12 09:36:09,057 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2356 transitions. Word has length 66 [2022-07-12 09:36:09,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:09,058 INFO L495 AbstractCegarLoop]: Abstraction has 1751 states and 2356 transitions. [2022-07-12 09:36:09,058 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) [2022-07-12 09:36:09,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2356 transitions. [2022-07-12 09:36:09,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:36:09,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:09,059 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] [2022-07-12 09:36:09,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 09:36:09,060 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:09,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:09,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2039549880, now seen corresponding path program 1 times [2022-07-12 09:36:09,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:09,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376038484] [2022-07-12 09:36:09,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:09,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:09,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:09,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:36:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:09,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:09,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:36:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:09,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:36:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:09,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 09:36:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:09,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:36:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:09,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:09,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:09,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376038484] [2022-07-12 09:36:09,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376038484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:09,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:09,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 09:36:09,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713701116] [2022-07-12 09:36:09,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:09,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:36:09,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:09,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:36:09,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:36:09,166 INFO L87 Difference]: Start difference. First operand 1751 states and 2356 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) [2022-07-12 09:36:10,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:10,853 INFO L93 Difference]: Finished difference Result 5485 states and 7458 transitions. [2022-07-12 09:36:10,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 09:36:10,854 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 [2022-07-12 09:36:10,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:10,863 INFO L225 Difference]: With dead ends: 5485 [2022-07-12 09:36:10,864 INFO L226 Difference]: Without dead ends: 2148 [2022-07-12 09:36:10,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 09:36:10,871 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 3039 mSDsluCounter, 1929 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 642 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3057 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 2343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 642 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:10,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3057 Valid, 2604 Invalid, 2343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [642 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 09:36:10,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2022-07-12 09:36:10,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 1952. [2022-07-12 09:36:10,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1559 states have (on average 1.3290570878768442) internal successors, (2072), 1584 states have internal predecessors, (2072), 213 states have call successors, (213), 139 states have call predecessors, (213), 178 states have return successors, (273), 231 states have call predecessors, (273), 211 states have call successors, (273) [2022-07-12 09:36:10,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2558 transitions. [2022-07-12 09:36:10,945 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2558 transitions. Word has length 66 [2022-07-12 09:36:10,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:10,946 INFO L495 AbstractCegarLoop]: Abstraction has 1952 states and 2558 transitions. [2022-07-12 09:36:10,946 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) [2022-07-12 09:36:10,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2558 transitions. [2022-07-12 09:36:10,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:36:10,948 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:10,948 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] [2022-07-12 09:36:10,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 09:36:10,948 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:10,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:10,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1663597100, now seen corresponding path program 1 times [2022-07-12 09:36:10,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:10,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746735460] [2022-07-12 09:36:10,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:10,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:10,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:10,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:36:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:10,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:11,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:36:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:11,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:36:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:11,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:36:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:11,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:36:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:11,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:36:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:11,029 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 09:36:11,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:11,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746735460] [2022-07-12 09:36:11,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746735460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:11,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:11,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:36:11,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525090537] [2022-07-12 09:36:11,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:11,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:36:11,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:11,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:36:11,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:36:11,033 INFO L87 Difference]: Start difference. First operand 1952 states and 2558 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) [2022-07-12 09:36:11,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:11,826 INFO L93 Difference]: Finished difference Result 3489 states and 4546 transitions. [2022-07-12 09:36:11,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 09:36:11,827 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 [2022-07-12 09:36:11,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:11,835 INFO L225 Difference]: With dead ends: 3489 [2022-07-12 09:36:11,835 INFO L226 Difference]: Without dead ends: 2036 [2022-07-12 09:36:11,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-07-12 09:36:11,839 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 1079 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 1903 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:11,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 1903 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:36:11,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2022-07-12 09:36:11,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 1731. [2022-07-12 09:36:11,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1391 states have (on average 1.3306973400431343) internal successors, (1851), 1411 states have internal predecessors, (1851), 185 states have call successors, (185), 120 states have call predecessors, (185), 153 states have return successors, (233), 201 states have call predecessors, (233), 183 states have call successors, (233) [2022-07-12 09:36:11,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2269 transitions. [2022-07-12 09:36:11,927 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2269 transitions. Word has length 91 [2022-07-12 09:36:11,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:11,927 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 2269 transitions. [2022-07-12 09:36:11,927 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) [2022-07-12 09:36:11,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2269 transitions. [2022-07-12 09:36:11,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:36:11,928 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:11,929 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] [2022-07-12 09:36:11,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 09:36:11,929 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:11,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:11,930 INFO L85 PathProgramCache]: Analyzing trace with hash -692208150, now seen corresponding path program 1 times [2022-07-12 09:36:11,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:11,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447324127] [2022-07-12 09:36:11,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:11,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:11,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:11,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:36:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:11,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:11,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:36:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:11,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:36:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:11,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:36:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:11,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:36:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:11,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:36:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:11,990 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 09:36:11,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:11,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447324127] [2022-07-12 09:36:11,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447324127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:11,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:11,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:11,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590751206] [2022-07-12 09:36:11,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:11,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:11,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:11,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:11,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:11,993 INFO L87 Difference]: Start difference. First operand 1731 states and 2269 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) [2022-07-12 09:36:12,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:12,244 INFO L93 Difference]: Finished difference Result 3307 states and 4329 transitions. [2022-07-12 09:36:12,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 09:36:12,244 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 [2022-07-12 09:36:12,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:12,250 INFO L225 Difference]: With dead ends: 3307 [2022-07-12 09:36:12,251 INFO L226 Difference]: Without dead ends: 1838 [2022-07-12 09:36:12,254 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 [2022-07-12 09:36:12,254 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1144 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:12,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 1203 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:36:12,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2022-07-12 09:36:12,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1731. [2022-07-12 09:36:12,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1391 states have (on average 1.3048166786484543) internal successors, (1815), 1411 states have internal predecessors, (1815), 185 states have call successors, (185), 120 states have call predecessors, (185), 153 states have return successors, (233), 201 states have call predecessors, (233), 183 states have call successors, (233) [2022-07-12 09:36:12,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2233 transitions. [2022-07-12 09:36:12,324 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2233 transitions. Word has length 91 [2022-07-12 09:36:12,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:12,324 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 2233 transitions. [2022-07-12 09:36:12,325 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) [2022-07-12 09:36:12,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2233 transitions. [2022-07-12 09:36:12,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 09:36:12,326 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:12,326 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] [2022-07-12 09:36:12,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 09:36:12,326 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:12,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:12,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1486977360, now seen corresponding path program 1 times [2022-07-12 09:36:12,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:12,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396130512] [2022-07-12 09:36:12,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:12,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:12,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:12,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:36:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:12,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:12,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:36:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:12,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:36:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:12,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:36:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:12,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:36:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:12,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 09:36:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:12,408 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:36:12,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:12,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396130512] [2022-07-12 09:36:12,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396130512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:12,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:12,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:36:12,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709057477] [2022-07-12 09:36:12,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:12,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:36:12,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:12,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:36:12,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:36:12,410 INFO L87 Difference]: Start difference. First operand 1731 states and 2233 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) [2022-07-12 09:36:13,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:13,435 INFO L93 Difference]: Finished difference Result 4157 states and 5338 transitions. [2022-07-12 09:36:13,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 09:36:13,436 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 [2022-07-12 09:36:13,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:13,444 INFO L225 Difference]: With dead ends: 4157 [2022-07-12 09:36:13,444 INFO L226 Difference]: Without dead ends: 2533 [2022-07-12 09:36:13,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-12 09:36:13,447 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 2020 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 1655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:13,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2058 Valid, 1718 Invalid, 1655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:36:13,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2022-07-12 09:36:13,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 2338. [2022-07-12 09:36:13,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 1844 states have (on average 1.2711496746203905) internal successors, (2344), 1879 states have internal predecessors, (2344), 262 states have call successors, (262), 168 states have call predecessors, (262), 230 states have return successors, (366), 292 states have call predecessors, (366), 260 states have call successors, (366) [2022-07-12 09:36:13,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 2972 transitions. [2022-07-12 09:36:13,535 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 2972 transitions. Word has length 92 [2022-07-12 09:36:13,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:13,536 INFO L495 AbstractCegarLoop]: Abstraction has 2338 states and 2972 transitions. [2022-07-12 09:36:13,536 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) [2022-07-12 09:36:13,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 2972 transitions. [2022-07-12 09:36:13,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 09:36:13,538 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:13,538 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] [2022-07-12 09:36:13,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 09:36:13,539 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:13,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:13,540 INFO L85 PathProgramCache]: Analyzing trace with hash 330043274, now seen corresponding path program 1 times [2022-07-12 09:36:13,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:13,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704863085] [2022-07-12 09:36:13,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:13,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:13,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:13,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:13,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 09:36:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:13,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:36:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:13,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 09:36:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:13,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:13,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:13,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704863085] [2022-07-12 09:36:13,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704863085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:13,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:13,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:36:13,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641033413] [2022-07-12 09:36:13,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:13,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:36:13,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:13,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:36:13,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:36:13,617 INFO L87 Difference]: Start difference. First operand 2338 states and 2972 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:14,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:14,399 INFO L93 Difference]: Finished difference Result 2671 states and 3504 transitions. [2022-07-12 09:36:14,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:36:14,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (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 123 [2022-07-12 09:36:14,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:14,407 INFO L225 Difference]: With dead ends: 2671 [2022-07-12 09:36:14,408 INFO L226 Difference]: Without dead ends: 2425 [2022-07-12 09:36:14,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:36:14,409 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 765 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:14,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 1022 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:36:14,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2022-07-12 09:36:14,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2338. [2022-07-12 09:36:14,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 1844 states have (on average 1.2706073752711498) internal successors, (2343), 1879 states have internal predecessors, (2343), 262 states have call successors, (262), 168 states have call predecessors, (262), 230 states have return successors, (366), 292 states have call predecessors, (366), 260 states have call successors, (366) [2022-07-12 09:36:14,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 2971 transitions. [2022-07-12 09:36:14,541 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 2971 transitions. Word has length 123 [2022-07-12 09:36:14,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:14,541 INFO L495 AbstractCegarLoop]: Abstraction has 2338 states and 2971 transitions. [2022-07-12 09:36:14,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:14,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 2971 transitions. [2022-07-12 09:36:14,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 09:36:14,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:14,544 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] [2022-07-12 09:36:14,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 09:36:14,544 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:14,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:14,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1598888952, now seen corresponding path program 1 times [2022-07-12 09:36:14,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:14,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52526583] [2022-07-12 09:36:14,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:14,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:14,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:14,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:14,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 09:36:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:14,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:36:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:14,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 09:36:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:14,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:14,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52526583] [2022-07-12 09:36:14,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52526583] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:14,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:14,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:36:14,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946424407] [2022-07-12 09:36:14,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:14,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:36:14,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:14,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:36:14,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:36:14,648 INFO L87 Difference]: Start difference. First operand 2338 states and 2971 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:16,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:16,029 INFO L93 Difference]: Finished difference Result 2994 states and 4018 transitions. [2022-07-12 09:36:16,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:36:16,030 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (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 123 [2022-07-12 09:36:16,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:16,039 INFO L225 Difference]: With dead ends: 2994 [2022-07-12 09:36:16,039 INFO L226 Difference]: Without dead ends: 2757 [2022-07-12 09:36:16,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:36:16,041 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 1216 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:16,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 1492 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:36:16,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2022-07-12 09:36:16,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2584. [2022-07-12 09:36:16,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2584 states, 2067 states have (on average 1.3033381712626995) internal successors, (2694), 2103 states have internal predecessors, (2694), 278 states have call successors, (278), 174 states have call predecessors, (278), 237 states have return successors, (385), 308 states have call predecessors, (385), 276 states have call successors, (385) [2022-07-12 09:36:16,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 3357 transitions. [2022-07-12 09:36:16,163 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 3357 transitions. Word has length 123 [2022-07-12 09:36:16,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:16,163 INFO L495 AbstractCegarLoop]: Abstraction has 2584 states and 3357 transitions. [2022-07-12 09:36:16,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:16,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 3357 transitions. [2022-07-12 09:36:16,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 09:36:16,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:16,165 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] [2022-07-12 09:36:16,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:36:16,166 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:16,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:16,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1970514316, now seen corresponding path program 1 times [2022-07-12 09:36:16,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:16,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275695498] [2022-07-12 09:36:16,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:16,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:16,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:16,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:16,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 09:36:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:16,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:36:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:16,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 09:36:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:16,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:16,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:16,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275695498] [2022-07-12 09:36:16,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275695498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:16,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:16,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:16,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748643229] [2022-07-12 09:36:16,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:16,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:16,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:16,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:16,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:16,251 INFO L87 Difference]: Start difference. First operand 2584 states and 3357 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:18,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:18,090 INFO L93 Difference]: Finished difference Result 3582 states and 4947 transitions. [2022-07-12 09:36:18,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:36:18,092 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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 123 [2022-07-12 09:36:18,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:18,101 INFO L225 Difference]: With dead ends: 3582 [2022-07-12 09:36:18,101 INFO L226 Difference]: Without dead ends: 3099 [2022-07-12 09:36:18,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:36:18,103 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 1226 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 2306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:18,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 2250 Invalid, 2306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2200 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 09:36:18,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3099 states. [2022-07-12 09:36:18,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3099 to 2813. [2022-07-12 09:36:18,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2813 states, 2273 states have (on average 1.3246810382754068) internal successors, (3011), 2310 states have internal predecessors, (3011), 294 states have call successors, (294), 180 states have call predecessors, (294), 244 states have return successors, (403), 325 states have call predecessors, (403), 292 states have call successors, (403) [2022-07-12 09:36:18,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2813 states to 2813 states and 3708 transitions. [2022-07-12 09:36:18,224 INFO L78 Accepts]: Start accepts. Automaton has 2813 states and 3708 transitions. Word has length 123 [2022-07-12 09:36:18,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:18,224 INFO L495 AbstractCegarLoop]: Abstraction has 2813 states and 3708 transitions. [2022-07-12 09:36:18,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:18,224 INFO L276 IsEmpty]: Start isEmpty. Operand 2813 states and 3708 transitions. [2022-07-12 09:36:18,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 09:36:18,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:18,226 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] [2022-07-12 09:36:18,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:36:18,226 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:18,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:18,226 INFO L85 PathProgramCache]: Analyzing trace with hash -935158966, now seen corresponding path program 1 times [2022-07-12 09:36:18,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:18,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132386991] [2022-07-12 09:36:18,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:18,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:18,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:18,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:18,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 09:36:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:18,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:36:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:18,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 09:36:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:18,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:18,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:18,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132386991] [2022-07-12 09:36:18,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132386991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:18,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:18,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:18,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137828933] [2022-07-12 09:36:18,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:18,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:18,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:18,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:18,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:18,302 INFO L87 Difference]: Start difference. First operand 2813 states and 3708 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:19,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:19,989 INFO L93 Difference]: Finished difference Result 4448 states and 6306 transitions. [2022-07-12 09:36:19,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:36:19,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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 123 [2022-07-12 09:36:19,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:20,003 INFO L225 Difference]: With dead ends: 4448 [2022-07-12 09:36:20,003 INFO L226 Difference]: Without dead ends: 3736 [2022-07-12 09:36:20,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:36:20,009 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 1295 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:20,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 1677 Invalid, 2117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1982 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 09:36:20,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2022-07-12 09:36:20,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3272. [2022-07-12 09:36:20,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3272 states, 2686 states have (on average 1.3574087862993298) internal successors, (3646), 2725 states have internal predecessors, (3646), 326 states have call successors, (326), 192 states have call predecessors, (326), 258 states have return successors, (443), 359 states have call predecessors, (443), 324 states have call successors, (443) [2022-07-12 09:36:20,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 4415 transitions. [2022-07-12 09:36:20,152 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 4415 transitions. Word has length 123 [2022-07-12 09:36:20,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:20,152 INFO L495 AbstractCegarLoop]: Abstraction has 3272 states and 4415 transitions. [2022-07-12 09:36:20,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:20,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 4415 transitions. [2022-07-12 09:36:20,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 09:36:20,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:20,154 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] [2022-07-12 09:36:20,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 09:36:20,154 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:20,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:20,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1326414284, now seen corresponding path program 1 times [2022-07-12 09:36:20,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:20,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910254473] [2022-07-12 09:36:20,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:20,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:20,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:20,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:20,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 09:36:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:20,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:36:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:20,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 09:36:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:20,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:20,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:20,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910254473] [2022-07-12 09:36:20,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910254473] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:20,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:20,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:20,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578643113] [2022-07-12 09:36:20,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:20,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:20,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:20,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:20,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:20,274 INFO L87 Difference]: Start difference. First operand 3272 states and 4415 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:22,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:22,174 INFO L93 Difference]: Finished difference Result 6115 states and 8909 transitions. [2022-07-12 09:36:22,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:36:22,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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 123 [2022-07-12 09:36:22,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:22,195 INFO L225 Difference]: With dead ends: 6115 [2022-07-12 09:36:22,195 INFO L226 Difference]: Without dead ends: 4944 [2022-07-12 09:36:22,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:36:22,200 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 1221 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 2238 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:22,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 2238 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 09:36:22,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4944 states. [2022-07-12 09:36:22,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4944 to 4191. [2022-07-12 09:36:22,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 3513 states have (on average 1.3993737546256761) internal successors, (4916), 3556 states have internal predecessors, (4916), 390 states have call successors, (390), 216 states have call predecessors, (390), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-07-12 09:36:22,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 5835 transitions. [2022-07-12 09:36:22,385 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 5835 transitions. Word has length 123 [2022-07-12 09:36:22,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:22,386 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 5835 transitions. [2022-07-12 09:36:22,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:22,386 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 5835 transitions. [2022-07-12 09:36:22,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 09:36:22,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:22,388 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] [2022-07-12 09:36:22,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 09:36:22,388 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:22,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:22,389 INFO L85 PathProgramCache]: Analyzing trace with hash -540294390, now seen corresponding path program 1 times [2022-07-12 09:36:22,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:22,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181548433] [2022-07-12 09:36:22,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:22,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:22,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:22,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:22,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 09:36:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:22,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:36:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:22,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 09:36:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:22,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:22,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181548433] [2022-07-12 09:36:22,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181548433] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:22,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:22,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:22,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93664141] [2022-07-12 09:36:22,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:22,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:22,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:22,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:22,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:22,496 INFO L87 Difference]: Start difference. First operand 4191 states and 5835 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:23,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:23,569 INFO L93 Difference]: Finished difference Result 7039 states and 10364 transitions. [2022-07-12 09:36:23,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:36:23,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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 123 [2022-07-12 09:36:23,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:23,581 INFO L225 Difference]: With dead ends: 7039 [2022-07-12 09:36:23,581 INFO L226 Difference]: Without dead ends: 4949 [2022-07-12 09:36:23,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:36:23,584 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 949 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:23,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 1380 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:36:23,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4949 states. [2022-07-12 09:36:23,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4949 to 4191. [2022-07-12 09:36:23,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 3513 states have (on average 1.3968118417307145) internal successors, (4907), 3556 states have internal predecessors, (4907), 390 states have call successors, (390), 216 states have call predecessors, (390), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-07-12 09:36:23,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 5826 transitions. [2022-07-12 09:36:23,780 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 5826 transitions. Word has length 123 [2022-07-12 09:36:23,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:23,780 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 5826 transitions. [2022-07-12 09:36:23,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:23,780 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 5826 transitions. [2022-07-12 09:36:23,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 09:36:23,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:23,782 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] [2022-07-12 09:36:23,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 09:36:23,783 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:23,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:23,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1357202376, now seen corresponding path program 1 times [2022-07-12 09:36:23,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:23,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611878197] [2022-07-12 09:36:23,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:23,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:23,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:23,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:23,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 09:36:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:23,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:36:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:23,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 09:36:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:23,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:23,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:23,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611878197] [2022-07-12 09:36:23,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611878197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:23,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:23,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:23,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2252631] [2022-07-12 09:36:23,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:23,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:23,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:23,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:23,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:23,873 INFO L87 Difference]: Start difference. First operand 4191 states and 5826 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:24,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:24,940 INFO L93 Difference]: Finished difference Result 7029 states and 10317 transitions. [2022-07-12 09:36:24,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:36:24,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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 123 [2022-07-12 09:36:24,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:24,956 INFO L225 Difference]: With dead ends: 7029 [2022-07-12 09:36:24,956 INFO L226 Difference]: Without dead ends: 4939 [2022-07-12 09:36:24,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:36:24,963 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 1108 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:24,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 1187 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:36:24,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4939 states. [2022-07-12 09:36:25,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4939 to 4191. [2022-07-12 09:36:25,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 3513 states have (on average 1.3942499288357528) internal successors, (4898), 3556 states have internal predecessors, (4898), 390 states have call successors, (390), 216 states have call predecessors, (390), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-07-12 09:36:25,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 5817 transitions. [2022-07-12 09:36:25,225 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 5817 transitions. Word has length 123 [2022-07-12 09:36:25,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:25,226 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 5817 transitions. [2022-07-12 09:36:25,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:25,226 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 5817 transitions. [2022-07-12 09:36:25,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 09:36:25,228 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:25,228 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] [2022-07-12 09:36:25,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 09:36:25,228 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:25,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:25,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1906724022, now seen corresponding path program 1 times [2022-07-12 09:36:25,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:25,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95212163] [2022-07-12 09:36:25,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:25,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:25,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:25,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:25,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 09:36:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:25,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:36:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:25,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 09:36:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:25,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:25,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:25,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95212163] [2022-07-12 09:36:25,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95212163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:25,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:25,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:25,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398460119] [2022-07-12 09:36:25,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:25,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:25,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:25,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:25,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:25,301 INFO L87 Difference]: Start difference. First operand 4191 states and 5817 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:26,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:26,360 INFO L93 Difference]: Finished difference Result 7019 states and 10270 transitions. [2022-07-12 09:36:26,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:36:26,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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 123 [2022-07-12 09:36:26,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:26,371 INFO L225 Difference]: With dead ends: 7019 [2022-07-12 09:36:26,371 INFO L226 Difference]: Without dead ends: 4929 [2022-07-12 09:36:26,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:36:26,375 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 945 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:26,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 1372 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:36:26,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4929 states. [2022-07-12 09:36:26,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4929 to 4191. [2022-07-12 09:36:26,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 3513 states have (on average 1.3916880159407914) internal successors, (4889), 3556 states have internal predecessors, (4889), 390 states have call successors, (390), 216 states have call predecessors, (390), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-07-12 09:36:26,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 5808 transitions. [2022-07-12 09:36:26,584 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 5808 transitions. Word has length 123 [2022-07-12 09:36:26,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:26,584 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 5808 transitions. [2022-07-12 09:36:26,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:26,585 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 5808 transitions. [2022-07-12 09:36:26,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 09:36:26,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:26,587 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] [2022-07-12 09:36:26,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 09:36:26,587 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:26,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:26,587 INFO L85 PathProgramCache]: Analyzing trace with hash 481840008, now seen corresponding path program 1 times [2022-07-12 09:36:26,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:26,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577272932] [2022-07-12 09:36:26,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:26,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:26,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:26,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:26,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 09:36:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:26,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:36:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:26,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 09:36:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:26,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:26,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:26,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577272932] [2022-07-12 09:36:26,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577272932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:26,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:26,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:26,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463116583] [2022-07-12 09:36:26,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:26,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:26,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:26,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:26,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:26,670 INFO L87 Difference]: Start difference. First operand 4191 states and 5808 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:29,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:29,014 INFO L93 Difference]: Finished difference Result 10267 states and 15225 transitions. [2022-07-12 09:36:29,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:36:29,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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 123 [2022-07-12 09:36:29,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:29,037 INFO L225 Difference]: With dead ends: 10267 [2022-07-12 09:36:29,037 INFO L226 Difference]: Without dead ends: 8177 [2022-07-12 09:36:29,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:36:29,044 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 1268 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 2580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:29,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 2322 Invalid, 2580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 09:36:29,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8177 states. [2022-07-12 09:36:29,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8177 to 6046. [2022-07-12 09:36:29,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6046 states, 5192 states have (on average 1.4335516178736518) internal successors, (7443), 5243 states have internal predecessors, (7443), 510 states have call successors, (510), 264 states have call predecessors, (510), 342 states have return successors, (711), 555 states have call predecessors, (711), 508 states have call successors, (711) [2022-07-12 09:36:29,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6046 states to 6046 states and 8664 transitions. [2022-07-12 09:36:29,410 INFO L78 Accepts]: Start accepts. Automaton has 6046 states and 8664 transitions. Word has length 123 [2022-07-12 09:36:29,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:29,410 INFO L495 AbstractCegarLoop]: Abstraction has 6046 states and 8664 transitions. [2022-07-12 09:36:29,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:29,411 INFO L276 IsEmpty]: Start isEmpty. Operand 6046 states and 8664 transitions. [2022-07-12 09:36:29,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 09:36:29,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:29,414 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] [2022-07-12 09:36:29,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 09:36:29,415 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:29,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:29,415 INFO L85 PathProgramCache]: Analyzing trace with hash 2082911114, now seen corresponding path program 1 times [2022-07-12 09:36:29,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:29,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006992968] [2022-07-12 09:36:29,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:29,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:29,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:29,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:29,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 09:36:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:29,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:36:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:29,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 09:36:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:29,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:29,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:29,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006992968] [2022-07-12 09:36:29,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006992968] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:29,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:29,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:29,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860816364] [2022-07-12 09:36:29,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:29,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:29,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:29,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:29,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:29,494 INFO L87 Difference]: Start difference. First operand 6046 states and 8664 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:31,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:31,889 INFO L93 Difference]: Finished difference Result 17532 states and 26495 transitions. [2022-07-12 09:36:31,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:36:31,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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 123 [2022-07-12 09:36:31,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:31,923 INFO L225 Difference]: With dead ends: 17532 [2022-07-12 09:36:31,924 INFO L226 Difference]: Without dead ends: 13587 [2022-07-12 09:36:31,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:36:31,936 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 1445 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 2106 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 2223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:31,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 2193 Invalid, 2223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 2106 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 09:36:31,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13587 states. [2022-07-12 09:36:32,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13587 to 9659. [2022-07-12 09:36:32,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9659 states, 8461 states have (on average 1.4670842689989363) internal successors, (12413), 8528 states have internal predecessors, (12413), 742 states have call successors, (742), 360 states have call predecessors, (742), 454 states have return successors, (1121), 803 states have call predecessors, (1121), 740 states have call successors, (1121) [2022-07-12 09:36:32,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9659 states to 9659 states and 14276 transitions. [2022-07-12 09:36:32,561 INFO L78 Accepts]: Start accepts. Automaton has 9659 states and 14276 transitions. Word has length 123 [2022-07-12 09:36:32,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:32,561 INFO L495 AbstractCegarLoop]: Abstraction has 9659 states and 14276 transitions. [2022-07-12 09:36:32,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:32,561 INFO L276 IsEmpty]: Start isEmpty. Operand 9659 states and 14276 transitions. [2022-07-12 09:36:32,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 09:36:32,565 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:32,566 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] [2022-07-12 09:36:32,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 09:36:32,566 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:32,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:32,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1026179912, now seen corresponding path program 1 times [2022-07-12 09:36:32,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:32,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208077503] [2022-07-12 09:36:32,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:32,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:32,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:32,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:32,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:32,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 09:36:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:32,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:36:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:32,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 09:36:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:32,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:32,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:32,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208077503] [2022-07-12 09:36:32,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208077503] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:32,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:32,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:32,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805567391] [2022-07-12 09:36:32,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:32,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:32,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:32,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:32,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:32,662 INFO L87 Difference]: Start difference. First operand 9659 states and 14276 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:35,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:35,961 INFO L93 Difference]: Finished difference Result 31519 states and 48365 transitions. [2022-07-12 09:36:35,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:36:35,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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 123 [2022-07-12 09:36:35,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:36,028 INFO L225 Difference]: With dead ends: 31519 [2022-07-12 09:36:36,028 INFO L226 Difference]: Without dead ends: 23961 [2022-07-12 09:36:36,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:36:36,053 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 1306 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 2337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:36,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 1737 Invalid, 2337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 09:36:36,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23961 states. [2022-07-12 09:36:37,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23961 to 16948. [2022-07-12 09:36:37,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16948 states, 15078 states have (on average 1.4919087412123624) internal successors, (22495), 15177 states have internal predecessors, (22495), 1190 states have call successors, (1190), 552 states have call predecessors, (1190), 678 states have return successors, (2087), 1283 states have call predecessors, (2087), 1188 states have call successors, (2087) [2022-07-12 09:36:37,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16948 states to 16948 states and 25772 transitions. [2022-07-12 09:36:37,113 INFO L78 Accepts]: Start accepts. Automaton has 16948 states and 25772 transitions. Word has length 123 [2022-07-12 09:36:37,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:37,113 INFO L495 AbstractCegarLoop]: Abstraction has 16948 states and 25772 transitions. [2022-07-12 09:36:37,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:37,113 INFO L276 IsEmpty]: Start isEmpty. Operand 16948 states and 25772 transitions. [2022-07-12 09:36:37,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 09:36:37,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:37,120 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] [2022-07-12 09:36:37,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 09:36:37,120 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:37,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:37,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1917402166, now seen corresponding path program 1 times [2022-07-12 09:36:37,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:37,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757225666] [2022-07-12 09:36:37,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:37,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:37,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:37,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:37,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 09:36:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:37,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:36:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:37,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 09:36:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:37,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:37,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:37,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757225666] [2022-07-12 09:36:37,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757225666] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:37,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:37,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:37,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765861904] [2022-07-12 09:36:37,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:37,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:37,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:37,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:37,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:37,184 INFO L87 Difference]: Start difference. First operand 16948 states and 25772 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:42,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:42,325 INFO L93 Difference]: Finished difference Result 59110 states and 92163 transitions. [2022-07-12 09:36:42,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:36:42,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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 123 [2022-07-12 09:36:42,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:42,458 INFO L225 Difference]: With dead ends: 59110 [2022-07-12 09:36:42,458 INFO L226 Difference]: Without dead ends: 44263 [2022-07-12 09:36:42,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:36:42,510 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 1369 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 2208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:42,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1403 Valid, 2185 Invalid, 2208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2088 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 09:36:42,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44263 states. [2022-07-12 09:36:44,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44263 to 31493. [2022-07-12 09:36:44,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31493 states, 28311 states have (on average 1.5078591360248668) internal successors, (42689), 28474 states have internal predecessors, (42689), 2054 states have call successors, (2054), 936 states have call predecessors, (2054), 1126 states have return successors, (4473), 2211 states have call predecessors, (4473), 2052 states have call successors, (4473) [2022-07-12 09:36:44,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31493 states to 31493 states and 49216 transitions. [2022-07-12 09:36:44,763 INFO L78 Accepts]: Start accepts. Automaton has 31493 states and 49216 transitions. Word has length 123 [2022-07-12 09:36:44,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:44,764 INFO L495 AbstractCegarLoop]: Abstraction has 31493 states and 49216 transitions. [2022-07-12 09:36:44,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:44,764 INFO L276 IsEmpty]: Start isEmpty. Operand 31493 states and 49216 transitions. [2022-07-12 09:36:44,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 09:36:44,777 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:44,778 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:36:44,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 09:36:44,778 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:44,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:44,778 INFO L85 PathProgramCache]: Analyzing trace with hash 758590216, now seen corresponding path program 1 times [2022-07-12 09:36:44,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:44,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91537505] [2022-07-12 09:36:44,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:44,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:44,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:44,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:44,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 09:36:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:44,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:36:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:44,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 09:36:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:44,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:44,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:44,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91537505] [2022-07-12 09:36:44,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91537505] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:44,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:44,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:44,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73930755] [2022-07-12 09:36:44,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:44,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:44,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:44,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:44,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:44,854 INFO L87 Difference]: Start difference. First operand 31493 states and 49216 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:48,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:48,713 INFO L93 Difference]: Finished difference Result 69211 states and 110899 transitions. [2022-07-12 09:36:48,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:36:48,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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 123 [2022-07-12 09:36:48,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:48,856 INFO L225 Difference]: With dead ends: 69211 [2022-07-12 09:36:48,857 INFO L226 Difference]: Without dead ends: 39819 [2022-07-12 09:36:48,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:36:48,925 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 946 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:48,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 1350 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:36:48,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39819 states. [2022-07-12 09:36:50,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39819 to 31493. [2022-07-12 09:36:50,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31493 states, 28311 states have (on average 1.5033026032284271) internal successors, (42560), 28474 states have internal predecessors, (42560), 2054 states have call successors, (2054), 936 states have call predecessors, (2054), 1126 states have return successors, (4473), 2211 states have call predecessors, (4473), 2052 states have call successors, (4473) [2022-07-12 09:36:51,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31493 states to 31493 states and 49087 transitions. [2022-07-12 09:36:51,080 INFO L78 Accepts]: Start accepts. Automaton has 31493 states and 49087 transitions. Word has length 123 [2022-07-12 09:36:51,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:51,080 INFO L495 AbstractCegarLoop]: Abstraction has 31493 states and 49087 transitions. [2022-07-12 09:36:51,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:36:51,080 INFO L276 IsEmpty]: Start isEmpty. Operand 31493 states and 49087 transitions. [2022-07-12 09:36:51,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 09:36:51,094 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:51,094 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] [2022-07-12 09:36:51,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 09:36:51,094 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:51,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:51,094 INFO L85 PathProgramCache]: Analyzing trace with hash 730089926, now seen corresponding path program 1 times [2022-07-12 09:36:51,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:51,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708973047] [2022-07-12 09:36:51,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:51,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:51,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:51,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:51,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 09:36:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:51,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:36:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:51,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 09:36:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:51,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:51,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:51,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708973047] [2022-07-12 09:36:51,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708973047] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:51,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:51,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:51,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269238044] [2022-07-12 09:36:51,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:51,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:51,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:51,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:51,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:51,185 INFO L87 Difference]: Start difference. First operand 31493 states and 49087 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:37:01,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:01,631 INFO L93 Difference]: Finished difference Result 109265 states and 173533 transitions. [2022-07-12 09:37:01,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:37:01,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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 123 [2022-07-12 09:37:01,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:01,864 INFO L225 Difference]: With dead ends: 109265 [2022-07-12 09:37:01,864 INFO L226 Difference]: Without dead ends: 79873 [2022-07-12 09:37:01,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:37:01,922 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 1240 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 2051 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 2171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:01,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1274 Valid, 2170 Invalid, 2171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2051 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 09:37:01,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79873 states. [2022-07-12 09:37:06,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79873 to 60776. [2022-07-12 09:37:06,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60776 states, 55034 states have (on average 1.5130646509430534) internal successors, (83270), 55325 states have internal predecessors, (83270), 3718 states have call successors, (3718), 1704 states have call predecessors, (3718), 2022 states have return successors, (10639), 4003 states have call predecessors, (10639), 3716 states have call successors, (10639) [2022-07-12 09:37:06,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60776 states to 60776 states and 97627 transitions. [2022-07-12 09:37:06,355 INFO L78 Accepts]: Start accepts. Automaton has 60776 states and 97627 transitions. Word has length 123 [2022-07-12 09:37:06,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:06,355 INFO L495 AbstractCegarLoop]: Abstraction has 60776 states and 97627 transitions. [2022-07-12 09:37:06,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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) [2022-07-12 09:37:06,356 INFO L276 IsEmpty]: Start isEmpty. Operand 60776 states and 97627 transitions. [2022-07-12 09:37:06,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 09:37:06,384 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:06,384 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] [2022-07-12 09:37:06,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 09:37:06,384 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:06,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:06,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1210492088, now seen corresponding path program 1 times [2022-07-12 09:37:06,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:06,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105848069] [2022-07-12 09:37:06,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:06,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:06,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:06,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:06,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 09:37:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:06,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:37:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:06,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 09:37:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:06,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:06,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:06,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105848069] [2022-07-12 09:37:06,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105848069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:06,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:06,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:06,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121109454] [2022-07-12 09:37:06,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:06,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:06,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:06,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:06,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:06,480 INFO L87 Difference]: Start difference. First operand 60776 states and 97627 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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)