./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 20da2548babe3ea7ba69c8856235b685b3dad9dcce2cbb8d7159e2037477f2fb --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:38:02,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:38:02,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:38:02,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:38:02,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:38:02,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:38:02,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:38:02,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:38:02,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:38:02,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:38:02,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:38:02,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:38:02,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:38:02,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:38:02,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:38:02,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:38:02,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:38:02,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:38:02,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:38:02,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:38:02,637 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:38:02,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:38:02,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:38:02,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:38:02,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:38:02,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:38:02,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:38:02,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:38:02,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:38:02,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:38:02,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:38:02,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:38:02,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:38:02,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:38:02,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:38:02,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:38:02,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:38:02,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:38:02,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:38:02,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:38:02,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:38:02,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:38:02,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 20:38:02,685 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:38:02,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:38:02,686 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:38:02,686 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:38:02,686 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:38:02,687 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:38:02,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:38:02,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:38:02,688 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:38:02,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:38:02,689 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:38:02,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 20:38:02,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:38:02,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:38:02,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:38:02,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:38:02,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:38:02,690 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:38:02,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:38:02,691 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:38:02,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:38:02,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:38:02,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:38:02,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:38:02,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:38:02,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:38:02,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:38:02,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:38:02,693 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 20:38:02,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 20:38:02,693 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:38:02,694 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:38:02,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:38:02,694 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20da2548babe3ea7ba69c8856235b685b3dad9dcce2cbb8d7159e2037477f2fb [2022-07-19 20:38:02,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:38:02,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:38:02,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:38:02,927 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:38:02,928 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:38:02,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-2.c [2022-07-19 20:38:02,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25e0ad82b/246c3e90874147c2be88fae094a8b760/FLAG698458918 [2022-07-19 20:38:03,421 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:38:03,422 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-2.c [2022-07-19 20:38:03,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25e0ad82b/246c3e90874147c2be88fae094a8b760/FLAG698458918 [2022-07-19 20:38:03,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25e0ad82b/246c3e90874147c2be88fae094a8b760 [2022-07-19 20:38:03,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:38:03,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:38:03,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:38:03,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:38:03,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:38:03,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:38:03" (1/1) ... [2022-07-19 20:38:03,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1de458c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:03, skipping insertion in model container [2022-07-19 20:38:03,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:38:03" (1/1) ... [2022-07-19 20:38:03,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:38:03,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:38:04,003 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.09.cil-2.c[911,924] [2022-07-19 20:38:04,060 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.09.cil-2.c[8416,8429] [2022-07-19 20:38:04,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:38:04,128 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:38:04,137 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.09.cil-2.c[911,924] [2022-07-19 20:38:04,153 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.09.cil-2.c[8416,8429] [2022-07-19 20:38:04,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:38:04,216 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:38:04,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:04 WrapperNode [2022-07-19 20:38:04,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:38:04,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:38:04,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:38:04,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:38:04,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:04" (1/1) ... [2022-07-19 20:38:04,236 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:04" (1/1) ... [2022-07-19 20:38:04,280 INFO L137 Inliner]: procedures = 73, calls = 89, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 909 [2022-07-19 20:38:04,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:38:04,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:38:04,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:38:04,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:38:04,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:04" (1/1) ... [2022-07-19 20:38:04,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:04" (1/1) ... [2022-07-19 20:38:04,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:04" (1/1) ... [2022-07-19 20:38:04,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:04" (1/1) ... [2022-07-19 20:38:04,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:04" (1/1) ... [2022-07-19 20:38:04,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:04" (1/1) ... [2022-07-19 20:38:04,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:04" (1/1) ... [2022-07-19 20:38:04,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:38:04,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:38:04,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:38:04,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:38:04,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:04" (1/1) ... [2022-07-19 20:38:04,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:38:04,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:38:04,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 20:38:04,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 20:38:04,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:38:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 20:38:04,411 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 20:38:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-19 20:38:04,412 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-19 20:38:04,413 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-19 20:38:04,413 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-19 20:38:04,413 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-19 20:38:04,413 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-19 20:38:04,413 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-19 20:38:04,413 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-19 20:38:04,413 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-19 20:38:04,414 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-19 20:38:04,414 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-19 20:38:04,414 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-19 20:38:04,414 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-19 20:38:04,414 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-19 20:38:04,414 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-19 20:38:04,415 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-19 20:38:04,415 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-19 20:38:04,415 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-19 20:38:04,415 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-19 20:38:04,415 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-19 20:38:04,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 20:38:04,415 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-19 20:38:04,416 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-19 20:38:04,416 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-19 20:38:04,416 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-19 20:38:04,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:38:04,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:38:04,416 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-19 20:38:04,417 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-19 20:38:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-19 20:38:04,417 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-19 20:38:04,558 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:38:04,560 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:38:05,181 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-19 20:38:05,181 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; [2022-07-19 20:38:05,234 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:38:05,244 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:38:05,244 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-19 20:38:05,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:38:05 BoogieIcfgContainer [2022-07-19 20:38:05,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:38:05,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:38:05,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:38:05,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:38:05,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:38:03" (1/3) ... [2022-07-19 20:38:05,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d3293f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:38:05, skipping insertion in model container [2022-07-19 20:38:05,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:04" (2/3) ... [2022-07-19 20:38:05,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d3293f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:38:05, skipping insertion in model container [2022-07-19 20:38:05,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:38:05" (3/3) ... [2022-07-19 20:38:05,254 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.09.cil-2.c [2022-07-19 20:38:05,266 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:38:05,266 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:38:05,313 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:38:05,319 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@521d71c8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@37e0b22b [2022-07-19 20:38:05,319 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:38:05,324 INFO L276 IsEmpty]: Start isEmpty. Operand has 432 states, 373 states have (on average 1.6300268096514745) internal successors, (608), 381 states have internal predecessors, (608), 41 states have call successors, (41), 15 states have call predecessors, (41), 15 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) [2022-07-19 20:38:05,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:38:05,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:05,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:05,335 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:05,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:05,340 INFO L85 PathProgramCache]: Analyzing trace with hash 140273204, now seen corresponding path program 1 times [2022-07-19 20:38:05,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:05,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025760064] [2022-07-19 20:38:05,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:05,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:05,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:05,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:38:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:05,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:05,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:38:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:05,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:38:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:05,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:38:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:05,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:38:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:05,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:05,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:05,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025760064] [2022-07-19 20:38:05,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025760064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:05,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:05,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:38:05,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241300758] [2022-07-19 20:38:05,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:05,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:38:05,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:05,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:38:05,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:38:05,718 INFO L87 Difference]: Start difference. First operand has 432 states, 373 states have (on average 1.6300268096514745) internal successors, (608), 381 states have internal predecessors, (608), 41 states have call successors, (41), 15 states have call predecessors, (41), 15 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) 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) [2022-07-19 20:38:06,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:06,449 INFO L93 Difference]: Finished difference Result 857 states and 1368 transitions. [2022-07-19 20:38:06,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 20:38:06,452 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 [2022-07-19 20:38:06,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:06,464 INFO L225 Difference]: With dead ends: 857 [2022-07-19 20:38:06,464 INFO L226 Difference]: Without dead ends: 439 [2022-07-19 20:38:06,469 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 [2022-07-19 20:38:06,472 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 669 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:06,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 1793 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 20:38:06,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-07-19 20:38:06,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 421. [2022-07-19 20:38:06,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 365 states have (on average 1.5424657534246575) internal successors, (563), 370 states have internal predecessors, (563), 41 states have call successors, (41), 15 states have call predecessors, (41), 13 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-19 20:38:06,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 641 transitions. [2022-07-19 20:38:06,536 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 641 transitions. Word has length 65 [2022-07-19 20:38:06,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:06,536 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 641 transitions. [2022-07-19 20:38:06,536 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) [2022-07-19 20:38:06,537 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 641 transitions. [2022-07-19 20:38:06,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:38:06,539 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:06,539 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] [2022-07-19 20:38:06,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 20:38:06,540 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:06,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:06,540 INFO L85 PathProgramCache]: Analyzing trace with hash 99598454, now seen corresponding path program 1 times [2022-07-19 20:38:06,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:06,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158007660] [2022-07-19 20:38:06,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:06,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:06,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:06,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:38:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:06,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:06,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:38:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:06,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:38:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:06,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:38:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:06,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:38:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:06,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:06,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:06,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158007660] [2022-07-19 20:38:06,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158007660] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:06,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:06,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:38:06,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563279937] [2022-07-19 20:38:06,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:06,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:38:06,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:06,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:38:06,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:38:06,673 INFO L87 Difference]: Start difference. First operand 421 states and 641 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) [2022-07-19 20:38:07,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:07,650 INFO L93 Difference]: Finished difference Result 676 states and 1010 transitions. [2022-07-19 20:38:07,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:38:07,651 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 [2022-07-19 20:38:07,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:07,655 INFO L225 Difference]: With dead ends: 676 [2022-07-19 20:38:07,655 INFO L226 Difference]: Without dead ends: 572 [2022-07-19 20:38:07,656 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 [2022-07-19 20:38:07,657 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 1098 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:07,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 2143 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 20:38:07,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-07-19 20:38:07,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 533. [2022-07-19 20:38:07,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 455 states have (on average 1.5142857142857142) internal successors, (689), 462 states have internal predecessors, (689), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2022-07-19 20:38:07,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 798 transitions. [2022-07-19 20:38:07,697 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 798 transitions. Word has length 65 [2022-07-19 20:38:07,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:07,698 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 798 transitions. [2022-07-19 20:38:07,698 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) [2022-07-19 20:38:07,698 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 798 transitions. [2022-07-19 20:38:07,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:38:07,700 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:07,701 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] [2022-07-19 20:38:07,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 20:38:07,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:07,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:07,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1778487094, now seen corresponding path program 1 times [2022-07-19 20:38:07,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:07,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382730293] [2022-07-19 20:38:07,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:07,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:07,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:07,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:38:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:07,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:07,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:38:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:07,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:38:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:07,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:38:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:07,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:38:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:07,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:07,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:07,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382730293] [2022-07-19 20:38:07,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382730293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:07,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:07,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:38:07,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938950954] [2022-07-19 20:38:07,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:07,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:38:07,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:07,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:38:07,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:38:07,877 INFO L87 Difference]: Start difference. First operand 533 states and 798 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) [2022-07-19 20:38:08,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:08,978 INFO L93 Difference]: Finished difference Result 930 states and 1363 transitions. [2022-07-19 20:38:08,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 20:38:08,978 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 [2022-07-19 20:38:08,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:08,983 INFO L225 Difference]: With dead ends: 930 [2022-07-19 20:38:08,983 INFO L226 Difference]: Without dead ends: 721 [2022-07-19 20:38:08,984 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 [2022-07-19 20:38:08,985 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 1553 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:08,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1582 Valid, 1995 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:38:08,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-07-19 20:38:09,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 645. [2022-07-19 20:38:09,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 545 states have (on average 1.4935779816513761) internal successors, (814), 554 states have internal predecessors, (814), 67 states have call successors, (67), 29 states have call predecessors, (67), 31 states have return successors, (76), 65 states have call predecessors, (76), 63 states have call successors, (76) [2022-07-19 20:38:09,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 957 transitions. [2022-07-19 20:38:09,044 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 957 transitions. Word has length 65 [2022-07-19 20:38:09,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:09,045 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 957 transitions. [2022-07-19 20:38:09,045 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) [2022-07-19 20:38:09,045 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 957 transitions. [2022-07-19 20:38:09,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:38:09,054 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:09,054 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] [2022-07-19 20:38:09,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 20:38:09,055 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:09,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:09,056 INFO L85 PathProgramCache]: Analyzing trace with hash -250099016, now seen corresponding path program 1 times [2022-07-19 20:38:09,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:09,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896358773] [2022-07-19 20:38:09,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:09,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:09,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:09,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:38:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:09,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:09,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:38:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:09,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:38:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:09,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:38:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:09,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:38:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:09,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:09,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:09,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896358773] [2022-07-19 20:38:09,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896358773] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:09,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:09,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 20:38:09,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653689092] [2022-07-19 20:38:09,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:09,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:38:09,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:09,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:38:09,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:38:09,161 INFO L87 Difference]: Start difference. First operand 645 states and 957 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) [2022-07-19 20:38:10,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:10,989 INFO L93 Difference]: Finished difference Result 2191 states and 3154 transitions. [2022-07-19 20:38:10,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-19 20:38:10,990 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 [2022-07-19 20:38:10,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:11,002 INFO L225 Difference]: With dead ends: 2191 [2022-07-19 20:38:11,003 INFO L226 Difference]: Without dead ends: 1858 [2022-07-19 20:38:11,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-19 20:38:11,014 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 3779 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 750 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3801 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 2390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 750 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:11,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3801 Valid, 2504 Invalid, 2390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [750 Valid, 1640 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 20:38:11,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2022-07-19 20:38:11,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1698. [2022-07-19 20:38:11,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1393 states have (on average 1.407035175879397) internal successors, (1960), 1417 states have internal predecessors, (1960), 177 states have call successors, (177), 112 states have call predecessors, (177), 126 states have return successors, (209), 171 states have call predecessors, (209), 173 states have call successors, (209) [2022-07-19 20:38:11,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2346 transitions. [2022-07-19 20:38:11,118 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2346 transitions. Word has length 65 [2022-07-19 20:38:11,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:11,119 INFO L495 AbstractCegarLoop]: Abstraction has 1698 states and 2346 transitions. [2022-07-19 20:38:11,119 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) [2022-07-19 20:38:11,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2346 transitions. [2022-07-19 20:38:11,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:38:11,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:11,120 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] [2022-07-19 20:38:11,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 20:38:11,122 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:11,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:11,122 INFO L85 PathProgramCache]: Analyzing trace with hash -515912993, now seen corresponding path program 1 times [2022-07-19 20:38:11,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:11,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205609502] [2022-07-19 20:38:11,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:11,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:11,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:11,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:38:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:11,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:11,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:38:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:11,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:38:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:11,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 20:38:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:11,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:38:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:11,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:11,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:11,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205609502] [2022-07-19 20:38:11,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205609502] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:11,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:11,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:38:11,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952237334] [2022-07-19 20:38:11,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:11,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:38:11,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:11,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:38:11,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:38:11,245 INFO L87 Difference]: Start difference. First operand 1698 states and 2346 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) [2022-07-19 20:38:12,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:12,277 INFO L93 Difference]: Finished difference Result 3226 states and 4425 transitions. [2022-07-19 20:38:12,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:38:12,277 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 [2022-07-19 20:38:12,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:12,286 INFO L225 Difference]: With dead ends: 3226 [2022-07-19 20:38:12,286 INFO L226 Difference]: Without dead ends: 1846 [2022-07-19 20:38:12,289 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 [2022-07-19 20:38:12,291 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 816 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:12,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 2533 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 20:38:12,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2022-07-19 20:38:12,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1738. [2022-07-19 20:38:12,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1425 states have (on average 1.3936842105263159) internal successors, (1986), 1449 states have internal predecessors, (1986), 177 states have call successors, (177), 112 states have call predecessors, (177), 134 states have return successors, (217), 179 states have call predecessors, (217), 173 states have call successors, (217) [2022-07-19 20:38:12,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2380 transitions. [2022-07-19 20:38:12,377 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2380 transitions. Word has length 66 [2022-07-19 20:38:12,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:12,377 INFO L495 AbstractCegarLoop]: Abstraction has 1738 states and 2380 transitions. [2022-07-19 20:38:12,378 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) [2022-07-19 20:38:12,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2380 transitions. [2022-07-19 20:38:12,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:38:12,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:12,379 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] [2022-07-19 20:38:12,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 20:38:12,379 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:12,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:12,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1545272291, now seen corresponding path program 1 times [2022-07-19 20:38:12,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:12,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535817016] [2022-07-19 20:38:12,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:12,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:12,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:12,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:38:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:12,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:12,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:38:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:12,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:38:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:12,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 20:38:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:12,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:38:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:12,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:12,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:12,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535817016] [2022-07-19 20:38:12,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535817016] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:12,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:12,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 20:38:12,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380957348] [2022-07-19 20:38:12,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:12,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:38:12,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:12,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:38:12,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:38:12,493 INFO L87 Difference]: Start difference. First operand 1738 states and 2380 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) [2022-07-19 20:38:14,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:14,321 INFO L93 Difference]: Finished difference Result 5310 states and 7254 transitions. [2022-07-19 20:38:14,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-19 20:38:14,321 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 [2022-07-19 20:38:14,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:14,332 INFO L225 Difference]: With dead ends: 5310 [2022-07-19 20:38:14,332 INFO L226 Difference]: Without dead ends: 2129 [2022-07-19 20:38:14,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-19 20:38:14,341 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 3475 mSDsluCounter, 2145 mSDsCounter, 0 mSdLazyCounter, 1708 mSolverCounterSat, 677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3497 SdHoareTripleChecker+Valid, 2906 SdHoareTripleChecker+Invalid, 2385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 677 IncrementalHoareTripleChecker+Valid, 1708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:14,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3497 Valid, 2906 Invalid, 2385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [677 Valid, 1708 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 20:38:14,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2022-07-19 20:38:14,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 1949. [2022-07-19 20:38:14,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1949 states, 1564 states have (on average 1.350383631713555) internal successors, (2112), 1590 states have internal predecessors, (2112), 217 states have call successors, (217), 140 states have call predecessors, (217), 166 states have return successors, (263), 221 states have call predecessors, (263), 213 states have call successors, (263) [2022-07-19 20:38:14,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 2592 transitions. [2022-07-19 20:38:14,421 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 2592 transitions. Word has length 66 [2022-07-19 20:38:14,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:14,422 INFO L495 AbstractCegarLoop]: Abstraction has 1949 states and 2592 transitions. [2022-07-19 20:38:14,422 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) [2022-07-19 20:38:14,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 2592 transitions. [2022-07-19 20:38:14,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 20:38:14,428 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:14,428 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] [2022-07-19 20:38:14,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 20:38:14,428 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:14,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:14,429 INFO L85 PathProgramCache]: Analyzing trace with hash 428939397, now seen corresponding path program 1 times [2022-07-19 20:38:14,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:14,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284164455] [2022-07-19 20:38:14,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:14,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:14,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:14,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:38:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:14,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:14,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:38:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:14,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:38:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:14,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 20:38:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:14,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:38:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:14,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:38:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:14,543 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 20:38:14,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:14,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284164455] [2022-07-19 20:38:14,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284164455] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:14,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:14,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:38:14,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416374703] [2022-07-19 20:38:14,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:14,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:38:14,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:14,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:38:14,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:38:14,546 INFO L87 Difference]: Start difference. First operand 1949 states and 2592 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:38:15,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:15,520 INFO L93 Difference]: Finished difference Result 3774 states and 4994 transitions. [2022-07-19 20:38:15,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 20:38:15,520 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2022-07-19 20:38:15,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:15,532 INFO L225 Difference]: With dead ends: 3774 [2022-07-19 20:38:15,532 INFO L226 Difference]: Without dead ends: 2143 [2022-07-19 20:38:15,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:38:15,539 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 541 mSDsluCounter, 2157 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:15,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 2772 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 20:38:15,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2022-07-19 20:38:15,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2009. [2022-07-19 20:38:15,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 1612 states have (on average 1.336228287841191) internal successors, (2154), 1638 states have internal predecessors, (2154), 217 states have call successors, (217), 140 states have call predecessors, (217), 178 states have return successors, (275), 233 states have call predecessors, (275), 213 states have call successors, (275) [2022-07-19 20:38:15,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2646 transitions. [2022-07-19 20:38:15,642 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2646 transitions. Word has length 91 [2022-07-19 20:38:15,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:15,642 INFO L495 AbstractCegarLoop]: Abstraction has 2009 states and 2646 transitions. [2022-07-19 20:38:15,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:38:15,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2646 transitions. [2022-07-19 20:38:15,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 20:38:15,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:15,644 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] [2022-07-19 20:38:15,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 20:38:15,645 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:15,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:15,645 INFO L85 PathProgramCache]: Analyzing trace with hash 872840071, now seen corresponding path program 1 times [2022-07-19 20:38:15,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:15,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133593068] [2022-07-19 20:38:15,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:15,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:15,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:15,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:38:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:15,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:15,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:38:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:15,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:38:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:15,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 20:38:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:15,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:38:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:15,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:38:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:15,719 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 20:38:15,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:15,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133593068] [2022-07-19 20:38:15,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133593068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:15,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:15,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:15,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478189435] [2022-07-19 20:38:15,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:15,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:15,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:15,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:15,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:15,723 INFO L87 Difference]: Start difference. First operand 2009 states and 2646 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) [2022-07-19 20:38:16,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:16,253 INFO L93 Difference]: Finished difference Result 5606 states and 7354 transitions. [2022-07-19 20:38:16,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 20:38:16,254 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 [2022-07-19 20:38:16,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:16,269 INFO L225 Difference]: With dead ends: 5606 [2022-07-19 20:38:16,270 INFO L226 Difference]: Without dead ends: 3916 [2022-07-19 20:38:16,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-19 20:38:16,274 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 1169 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1199 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:16,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1199 Valid, 1849 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 20:38:16,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3916 states. [2022-07-19 20:38:16,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3916 to 3696. [2022-07-19 20:38:16,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3696 states, 2926 states have (on average 1.2956254272043746) internal successors, (3791), 2986 states have internal predecessors, (3791), 406 states have call successors, (406), 272 states have call predecessors, (406), 362 states have return successors, (607), 442 states have call predecessors, (607), 402 states have call successors, (607) [2022-07-19 20:38:16,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3696 states to 3696 states and 4804 transitions. [2022-07-19 20:38:16,425 INFO L78 Accepts]: Start accepts. Automaton has 3696 states and 4804 transitions. Word has length 91 [2022-07-19 20:38:16,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:16,426 INFO L495 AbstractCegarLoop]: Abstraction has 3696 states and 4804 transitions. [2022-07-19 20:38:16,426 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) [2022-07-19 20:38:16,426 INFO L276 IsEmpty]: Start isEmpty. Operand 3696 states and 4804 transitions. [2022-07-19 20:38:16,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 20:38:16,428 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:16,429 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] [2022-07-19 20:38:16,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 20:38:16,429 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:16,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:16,430 INFO L85 PathProgramCache]: Analyzing trace with hash -184998007, now seen corresponding path program 1 times [2022-07-19 20:38:16,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:16,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829475604] [2022-07-19 20:38:16,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:16,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:16,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:16,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:38:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:16,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:16,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:38:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:16,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:38:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:16,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 20:38:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:16,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:38:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:16,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:38:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:16,490 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 20:38:16,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:16,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829475604] [2022-07-19 20:38:16,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829475604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:16,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:16,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:38:16,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726694849] [2022-07-19 20:38:16,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:16,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:38:16,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:16,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:38:16,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:38:16,493 INFO L87 Difference]: Start difference. First operand 3696 states and 4804 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:38:17,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:17,030 INFO L93 Difference]: Finished difference Result 5504 states and 7072 transitions. [2022-07-19 20:38:17,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 20:38:17,030 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-19 20:38:17,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:17,040 INFO L225 Difference]: With dead ends: 5504 [2022-07-19 20:38:17,040 INFO L226 Difference]: Without dead ends: 2127 [2022-07-19 20:38:17,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:38:17,049 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 657 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:17,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 1709 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 20:38:17,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2022-07-19 20:38:17,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 2009. [2022-07-19 20:38:17,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 1612 states have (on average 1.3095533498759304) internal successors, (2111), 1638 states have internal predecessors, (2111), 217 states have call successors, (217), 140 states have call predecessors, (217), 178 states have return successors, (275), 233 states have call predecessors, (275), 213 states have call successors, (275) [2022-07-19 20:38:17,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2603 transitions. [2022-07-19 20:38:17,127 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2603 transitions. Word has length 91 [2022-07-19 20:38:17,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:17,128 INFO L495 AbstractCegarLoop]: Abstraction has 2009 states and 2603 transitions. [2022-07-19 20:38:17,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:38:17,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2603 transitions. [2022-07-19 20:38:17,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-19 20:38:17,130 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:17,130 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] [2022-07-19 20:38:17,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 20:38:17,131 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:17,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:17,131 INFO L85 PathProgramCache]: Analyzing trace with hash -828087601, now seen corresponding path program 1 times [2022-07-19 20:38:17,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:17,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127363101] [2022-07-19 20:38:17,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:17,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:17,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:17,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:38:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:17,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:17,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:38:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:17,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:38:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:17,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 20:38:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:17,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:38:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:17,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 20:38:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:17,233 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 20:38:17,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:17,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127363101] [2022-07-19 20:38:17,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127363101] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:17,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:17,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:38:17,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644134023] [2022-07-19 20:38:17,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:17,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:38:17,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:17,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:38:17,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:38:17,235 INFO L87 Difference]: Start difference. First operand 2009 states and 2603 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) [2022-07-19 20:38:18,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:18,503 INFO L93 Difference]: Finished difference Result 4665 states and 5993 transitions. [2022-07-19 20:38:18,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 20:38:18,504 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 [2022-07-19 20:38:18,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:18,519 INFO L225 Difference]: With dead ends: 4665 [2022-07-19 20:38:18,519 INFO L226 Difference]: Without dead ends: 2823 [2022-07-19 20:38:18,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-19 20:38:18,526 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 2620 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2662 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:18,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2662 Valid, 1990 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:38:18,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-07-19 20:38:18,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2646. [2022-07-19 20:38:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2646 states, 2090 states have (on average 1.2708133971291866) internal successors, (2656), 2125 states have internal predecessors, (2656), 296 states have call successors, (296), 189 states have call predecessors, (296), 258 states have return successors, (411), 334 states have call predecessors, (411), 292 states have call successors, (411) [2022-07-19 20:38:18,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2646 states to 2646 states and 3363 transitions. [2022-07-19 20:38:18,661 INFO L78 Accepts]: Start accepts. Automaton has 2646 states and 3363 transitions. Word has length 92 [2022-07-19 20:38:18,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:18,662 INFO L495 AbstractCegarLoop]: Abstraction has 2646 states and 3363 transitions. [2022-07-19 20:38:18,662 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) [2022-07-19 20:38:18,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2646 states and 3363 transitions. [2022-07-19 20:38:18,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 20:38:18,666 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:18,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:18,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 20:38:18,667 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:18,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:18,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1167702267, now seen corresponding path program 1 times [2022-07-19 20:38:18,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:18,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531099790] [2022-07-19 20:38:18,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:18,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:18,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:18,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:38:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:18,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:38:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:18,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:38:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:18,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:38:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:18,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:18,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531099790] [2022-07-19 20:38:18,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531099790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:18,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:18,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:38:18,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393789082] [2022-07-19 20:38:18,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:18,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:38:18,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:18,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:38:18,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:38:18,779 INFO L87 Difference]: Start difference. First operand 2646 states and 3363 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:19,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:19,897 INFO L93 Difference]: Finished difference Result 3051 states and 4013 transitions. [2022-07-19 20:38:19,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:38:19,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-19 20:38:19,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:19,909 INFO L225 Difference]: With dead ends: 3051 [2022-07-19 20:38:19,909 INFO L226 Difference]: Without dead ends: 2755 [2022-07-19 20:38:19,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:38:19,911 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 922 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:19,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 1196 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 20:38:19,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2022-07-19 20:38:20,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 2646. [2022-07-19 20:38:20,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2646 states, 2090 states have (on average 1.270334928229665) internal successors, (2655), 2125 states have internal predecessors, (2655), 296 states have call successors, (296), 189 states have call predecessors, (296), 258 states have return successors, (411), 334 states have call predecessors, (411), 292 states have call successors, (411) [2022-07-19 20:38:20,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2646 states to 2646 states and 3362 transitions. [2022-07-19 20:38:20,128 INFO L78 Accepts]: Start accepts. Automaton has 2646 states and 3362 transitions. Word has length 146 [2022-07-19 20:38:20,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:20,128 INFO L495 AbstractCegarLoop]: Abstraction has 2646 states and 3362 transitions. [2022-07-19 20:38:20,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:20,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2646 states and 3362 transitions. [2022-07-19 20:38:20,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 20:38:20,131 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:20,131 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:20,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 20:38:20,132 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:20,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:20,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1712574841, now seen corresponding path program 1 times [2022-07-19 20:38:20,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:20,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810370239] [2022-07-19 20:38:20,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:20,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:20,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:20,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:38:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:20,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:38:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:20,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:38:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:20,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:38:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:20,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:20,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:20,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810370239] [2022-07-19 20:38:20,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810370239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:20,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:20,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:38:20,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351011599] [2022-07-19 20:38:20,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:20,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:38:20,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:20,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:38:20,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:38:20,251 INFO L87 Difference]: Start difference. First operand 2646 states and 3362 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:22,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:22,305 INFO L93 Difference]: Finished difference Result 3460 states and 4673 transitions. [2022-07-19 20:38:22,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:38:22,305 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-19 20:38:22,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:22,316 INFO L225 Difference]: With dead ends: 3460 [2022-07-19 20:38:22,316 INFO L226 Difference]: Without dead ends: 3168 [2022-07-19 20:38:22,318 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 [2022-07-19 20:38:22,318 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 1462 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 1742 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 1894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:22,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1792 Invalid, 1894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1742 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 20:38:22,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3168 states. [2022-07-19 20:38:22,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3168 to 2949. [2022-07-19 20:38:22,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2368 states have (on average 1.308277027027027) internal successors, (3098), 2404 states have internal predecessors, (3098), 314 states have call successors, (314), 195 states have call predecessors, (314), 265 states have return successors, (432), 352 states have call predecessors, (432), 310 states have call successors, (432) [2022-07-19 20:38:22,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 3844 transitions. [2022-07-19 20:38:22,488 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 3844 transitions. Word has length 146 [2022-07-19 20:38:22,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:22,489 INFO L495 AbstractCegarLoop]: Abstraction has 2949 states and 3844 transitions. [2022-07-19 20:38:22,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:22,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 3844 transitions. [2022-07-19 20:38:22,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 20:38:22,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:22,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:22,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 20:38:22,493 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:22,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:22,493 INFO L85 PathProgramCache]: Analyzing trace with hash -88890763, now seen corresponding path program 1 times [2022-07-19 20:38:22,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:22,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119858956] [2022-07-19 20:38:22,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:22,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:22,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:22,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:38:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:22,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:38:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:22,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:38:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:22,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:38:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:22,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:22,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:22,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119858956] [2022-07-19 20:38:22,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119858956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:22,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:22,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:22,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783834232] [2022-07-19 20:38:22,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:22,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:22,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:22,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:22,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:22,628 INFO L87 Difference]: Start difference. First operand 2949 states and 3844 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:25,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:25,321 INFO L93 Difference]: Finished difference Result 4188 states and 5840 transitions. [2022-07-19 20:38:25,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:38:25,323 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-19 20:38:25,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:25,334 INFO L225 Difference]: With dead ends: 4188 [2022-07-19 20:38:25,335 INFO L226 Difference]: Without dead ends: 3593 [2022-07-19 20:38:25,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:38:25,337 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 1477 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 2672 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 2785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:25,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 2759 Invalid, 2785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2672 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 20:38:25,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3593 states. [2022-07-19 20:38:25,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3593 to 3231. [2022-07-19 20:38:25,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3231 states, 2625 states have (on average 1.3329523809523809) internal successors, (3499), 2662 states have internal predecessors, (3499), 332 states have call successors, (332), 201 states have call predecessors, (332), 272 states have return successors, (452), 371 states have call predecessors, (452), 328 states have call successors, (452) [2022-07-19 20:38:25,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3231 states to 3231 states and 4283 transitions. [2022-07-19 20:38:25,525 INFO L78 Accepts]: Start accepts. Automaton has 3231 states and 4283 transitions. Word has length 146 [2022-07-19 20:38:25,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:25,525 INFO L495 AbstractCegarLoop]: Abstraction has 3231 states and 4283 transitions. [2022-07-19 20:38:25,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:25,526 INFO L276 IsEmpty]: Start isEmpty. Operand 3231 states and 4283 transitions. [2022-07-19 20:38:25,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 20:38:25,528 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:25,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:25,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 20:38:25,529 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:25,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:25,529 INFO L85 PathProgramCache]: Analyzing trace with hash -795487369, now seen corresponding path program 1 times [2022-07-19 20:38:25,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:25,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485467156] [2022-07-19 20:38:25,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:25,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:25,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:25,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:38:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:25,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:38:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:25,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:38:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:25,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:38:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:25,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:25,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:25,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485467156] [2022-07-19 20:38:25,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485467156] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:25,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:25,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:25,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107247658] [2022-07-19 20:38:25,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:25,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:25,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:25,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:25,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:25,665 INFO L87 Difference]: Start difference. First operand 3231 states and 4283 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:28,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:28,106 INFO L93 Difference]: Finished difference Result 5261 states and 7547 transitions. [2022-07-19 20:38:28,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:38:28,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-19 20:38:28,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:28,122 INFO L225 Difference]: With dead ends: 5261 [2022-07-19 20:38:28,123 INFO L226 Difference]: Without dead ends: 4384 [2022-07-19 20:38:28,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:38:28,128 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 1474 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 2674 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 2751 SdHoareTripleChecker+Invalid, 2790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:28,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 2751 Invalid, 2790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2674 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 20:38:28,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4384 states. [2022-07-19 20:38:28,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4384 to 3796. [2022-07-19 20:38:28,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3796 states, 3140 states have (on average 1.370063694267516) internal successors, (4302), 3179 states have internal predecessors, (4302), 368 states have call successors, (368), 213 states have call predecessors, (368), 286 states have return successors, (496), 409 states have call predecessors, (496), 364 states have call successors, (496) [2022-07-19 20:38:28,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3796 states to 3796 states and 5166 transitions. [2022-07-19 20:38:28,411 INFO L78 Accepts]: Start accepts. Automaton has 3796 states and 5166 transitions. Word has length 146 [2022-07-19 20:38:28,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:28,411 INFO L495 AbstractCegarLoop]: Abstraction has 3796 states and 5166 transitions. [2022-07-19 20:38:28,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:28,412 INFO L276 IsEmpty]: Start isEmpty. Operand 3796 states and 5166 transitions. [2022-07-19 20:38:28,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 20:38:28,415 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:28,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:28,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 20:38:28,416 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:28,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:28,416 INFO L85 PathProgramCache]: Analyzing trace with hash 151550517, now seen corresponding path program 1 times [2022-07-19 20:38:28,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:28,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859628089] [2022-07-19 20:38:28,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:28,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:28,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:28,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:38:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:28,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:38:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:28,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:38:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:28,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:38:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:28,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:28,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859628089] [2022-07-19 20:38:28,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859628089] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:28,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:28,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:28,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781469570] [2022-07-19 20:38:28,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:28,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:28,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:28,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:28,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:28,520 INFO L87 Difference]: Start difference. First operand 3796 states and 5166 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:30,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:30,913 INFO L93 Difference]: Finished difference Result 7326 states and 10814 transitions. [2022-07-19 20:38:30,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:38:30,915 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-19 20:38:30,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:30,939 INFO L225 Difference]: With dead ends: 7326 [2022-07-19 20:38:30,939 INFO L226 Difference]: Without dead ends: 5884 [2022-07-19 20:38:30,947 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 [2022-07-19 20:38:30,948 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 1470 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 2669 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 2785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:30,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 2747 Invalid, 2785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2669 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 20:38:30,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-07-19 20:38:31,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 4927. [2022-07-19 20:38:31,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4927 states, 4171 states have (on average 1.416446895228962) internal successors, (5908), 4214 states have internal predecessors, (5908), 440 states have call successors, (440), 237 states have call predecessors, (440), 314 states have return successors, (590), 485 states have call predecessors, (590), 436 states have call successors, (590) [2022-07-19 20:38:31,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4927 states to 4927 states and 6938 transitions. [2022-07-19 20:38:31,251 INFO L78 Accepts]: Start accepts. Automaton has 4927 states and 6938 transitions. Word has length 146 [2022-07-19 20:38:31,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:31,251 INFO L495 AbstractCegarLoop]: Abstraction has 4927 states and 6938 transitions. [2022-07-19 20:38:31,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:31,252 INFO L276 IsEmpty]: Start isEmpty. Operand 4927 states and 6938 transitions. [2022-07-19 20:38:31,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 20:38:31,257 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:31,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:31,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 20:38:31,257 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:31,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:31,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1013384119, now seen corresponding path program 1 times [2022-07-19 20:38:31,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:31,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073630460] [2022-07-19 20:38:31,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:31,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:31,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:31,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:38:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:31,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:38:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:31,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:38:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:31,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:38:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:31,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:31,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:31,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073630460] [2022-07-19 20:38:31,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073630460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:31,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:31,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:31,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509982562] [2022-07-19 20:38:31,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:31,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:31,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:31,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:31,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:31,401 INFO L87 Difference]: Start difference. First operand 4927 states and 6938 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:33,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:33,993 INFO L93 Difference]: Finished difference Result 11455 states and 17364 transitions. [2022-07-19 20:38:33,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:38:33,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-19 20:38:33,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:34,015 INFO L225 Difference]: With dead ends: 11455 [2022-07-19 20:38:34,015 INFO L226 Difference]: Without dead ends: 8882 [2022-07-19 20:38:34,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:38:34,023 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 1466 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 2664 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 2743 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:34,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 2743 Invalid, 2780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2664 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 20:38:34,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8882 states. [2022-07-19 20:38:34,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8882 to 7194. [2022-07-19 20:38:34,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7194 states, 6238 states have (on average 1.462968900288554) internal successors, (9126), 6289 states have internal predecessors, (9126), 584 states have call successors, (584), 285 states have call predecessors, (584), 370 states have return successors, (796), 637 states have call predecessors, (796), 580 states have call successors, (796) [2022-07-19 20:38:34,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7194 states to 7194 states and 10506 transitions. [2022-07-19 20:38:34,470 INFO L78 Accepts]: Start accepts. Automaton has 7194 states and 10506 transitions. Word has length 146 [2022-07-19 20:38:34,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:34,471 INFO L495 AbstractCegarLoop]: Abstraction has 7194 states and 10506 transitions. [2022-07-19 20:38:34,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:34,471 INFO L276 IsEmpty]: Start isEmpty. Operand 7194 states and 10506 transitions. [2022-07-19 20:38:34,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 20:38:34,476 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:34,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:34,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 20:38:34,476 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:34,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:34,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1037024779, now seen corresponding path program 1 times [2022-07-19 20:38:34,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:34,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143401995] [2022-07-19 20:38:34,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:34,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:34,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:34,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:38:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:34,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:38:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:34,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:38:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:34,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:38:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:34,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:34,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:34,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143401995] [2022-07-19 20:38:34,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143401995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:34,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:34,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:34,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28673323] [2022-07-19 20:38:34,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:34,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:34,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:34,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:34,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:34,583 INFO L87 Difference]: Start difference. First operand 7194 states and 10506 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:36,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:36,516 INFO L93 Difference]: Finished difference Result 13798 states and 21153 transitions. [2022-07-19 20:38:36,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:38:36,516 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-19 20:38:36,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:36,544 INFO L225 Difference]: With dead ends: 13798 [2022-07-19 20:38:36,544 INFO L226 Difference]: Without dead ends: 8958 [2022-07-19 20:38:36,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:38:36,559 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 1127 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:36,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 1653 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 20:38:36,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8958 states. [2022-07-19 20:38:36,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8958 to 7194. [2022-07-19 20:38:36,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7194 states, 6238 states have (on average 1.4602436678422572) internal successors, (9109), 6289 states have internal predecessors, (9109), 584 states have call successors, (584), 285 states have call predecessors, (584), 370 states have return successors, (796), 637 states have call predecessors, (796), 580 states have call successors, (796) [2022-07-19 20:38:36,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7194 states to 7194 states and 10489 transitions. [2022-07-19 20:38:36,979 INFO L78 Accepts]: Start accepts. Automaton has 7194 states and 10489 transitions. Word has length 146 [2022-07-19 20:38:36,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:36,979 INFO L495 AbstractCegarLoop]: Abstraction has 7194 states and 10489 transitions. [2022-07-19 20:38:36,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:36,980 INFO L276 IsEmpty]: Start isEmpty. Operand 7194 states and 10489 transitions. [2022-07-19 20:38:36,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 20:38:36,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:36,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:36,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 20:38:36,985 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:36,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:36,985 INFO L85 PathProgramCache]: Analyzing trace with hash -548977673, now seen corresponding path program 1 times [2022-07-19 20:38:36,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:36,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578967706] [2022-07-19 20:38:36,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:36,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:37,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:37,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:38:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:37,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:38:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:37,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:38:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:37,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:38:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:37,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:37,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:37,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578967706] [2022-07-19 20:38:37,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578967706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:37,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:37,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:37,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832717771] [2022-07-19 20:38:37,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:37,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:37,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:37,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:37,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:37,110 INFO L87 Difference]: Start difference. First operand 7194 states and 10489 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:38,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:38,703 INFO L93 Difference]: Finished difference Result 13780 states and 21067 transitions. [2022-07-19 20:38:38,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:38:38,704 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-19 20:38:38,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:38,730 INFO L225 Difference]: With dead ends: 13780 [2022-07-19 20:38:38,731 INFO L226 Difference]: Without dead ends: 8940 [2022-07-19 20:38:38,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:38:38,743 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 1314 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:38,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1343 Valid, 1423 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:38:38,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8940 states. [2022-07-19 20:38:39,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8940 to 7194. [2022-07-19 20:38:39,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7194 states, 6238 states have (on average 1.4575184353959603) internal successors, (9092), 6289 states have internal predecessors, (9092), 584 states have call successors, (584), 285 states have call predecessors, (584), 370 states have return successors, (796), 637 states have call predecessors, (796), 580 states have call successors, (796) [2022-07-19 20:38:39,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7194 states to 7194 states and 10472 transitions. [2022-07-19 20:38:39,197 INFO L78 Accepts]: Start accepts. Automaton has 7194 states and 10472 transitions. Word has length 146 [2022-07-19 20:38:39,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:39,198 INFO L495 AbstractCegarLoop]: Abstraction has 7194 states and 10472 transitions. [2022-07-19 20:38:39,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:39,198 INFO L276 IsEmpty]: Start isEmpty. Operand 7194 states and 10472 transitions. [2022-07-19 20:38:39,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 20:38:39,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:39,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:39,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 20:38:39,203 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:39,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:39,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1641612875, now seen corresponding path program 1 times [2022-07-19 20:38:39,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:39,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297127898] [2022-07-19 20:38:39,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:39,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:39,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:39,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:38:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:39,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:38:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:39,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:38:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:39,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:38:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:39,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:39,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:39,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297127898] [2022-07-19 20:38:39,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297127898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:39,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:39,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:39,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406791994] [2022-07-19 20:38:39,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:39,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:39,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:39,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:39,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:39,345 INFO L87 Difference]: Start difference. First operand 7194 states and 10472 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:42,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:42,364 INFO L93 Difference]: Finished difference Result 19657 states and 30250 transitions. [2022-07-19 20:38:42,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:38:42,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-19 20:38:42,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:42,409 INFO L225 Difference]: With dead ends: 19657 [2022-07-19 20:38:42,410 INFO L226 Difference]: Without dead ends: 14817 [2022-07-19 20:38:42,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:38:42,426 INFO L413 NwaCegarLoop]: 910 mSDtfsCounter, 1448 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 2605 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 2725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:42,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 2721 Invalid, 2725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2605 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 20:38:42,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14817 states. [2022-07-19 20:38:43,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14817 to 11790. [2022-07-19 20:38:43,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11790 states, 10434 states have (on average 1.493387004025302) internal successors, (15582), 10501 states have internal predecessors, (15582), 872 states have call successors, (872), 381 states have call predecessors, (872), 482 states have return successors, (1262), 941 states have call predecessors, (1262), 868 states have call successors, (1262) [2022-07-19 20:38:43,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11790 states to 11790 states and 17716 transitions. [2022-07-19 20:38:43,242 INFO L78 Accepts]: Start accepts. Automaton has 11790 states and 17716 transitions. Word has length 146 [2022-07-19 20:38:43,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:43,242 INFO L495 AbstractCegarLoop]: Abstraction has 11790 states and 17716 transitions. [2022-07-19 20:38:43,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:43,243 INFO L276 IsEmpty]: Start isEmpty. Operand 11790 states and 17716 transitions. [2022-07-19 20:38:43,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 20:38:43,249 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:43,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:43,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 20:38:43,250 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:43,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:43,251 INFO L85 PathProgramCache]: Analyzing trace with hash 810878707, now seen corresponding path program 1 times [2022-07-19 20:38:43,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:43,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636284804] [2022-07-19 20:38:43,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:43,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:43,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:43,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:38:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:43,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:38:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:43,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:38:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:43,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:38:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:43,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:43,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:43,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636284804] [2022-07-19 20:38:43,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636284804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:43,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:43,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:43,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884123972] [2022-07-19 20:38:43,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:43,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:43,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:43,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:43,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:43,348 INFO L87 Difference]: Start difference. First operand 11790 states and 17716 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:45,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:45,397 INFO L93 Difference]: Finished difference Result 24390 states and 37975 transitions. [2022-07-19 20:38:45,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:38:45,397 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-19 20:38:45,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:45,451 INFO L225 Difference]: With dead ends: 24390 [2022-07-19 20:38:45,451 INFO L226 Difference]: Without dead ends: 14954 [2022-07-19 20:38:45,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:38:45,481 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 1125 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:45,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1154 Valid, 1638 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:38:45,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14954 states. [2022-07-19 20:38:46,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14954 to 11790. [2022-07-19 20:38:46,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11790 states, 10434 states have (on average 1.4902242668200114) internal successors, (15549), 10501 states have internal predecessors, (15549), 872 states have call successors, (872), 381 states have call predecessors, (872), 482 states have return successors, (1262), 941 states have call predecessors, (1262), 868 states have call successors, (1262) [2022-07-19 20:38:46,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11790 states to 11790 states and 17683 transitions. [2022-07-19 20:38:46,310 INFO L78 Accepts]: Start accepts. Automaton has 11790 states and 17683 transitions. Word has length 146 [2022-07-19 20:38:46,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:46,310 INFO L495 AbstractCegarLoop]: Abstraction has 11790 states and 17683 transitions. [2022-07-19 20:38:46,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:46,310 INFO L276 IsEmpty]: Start isEmpty. Operand 11790 states and 17683 transitions. [2022-07-19 20:38:46,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 20:38:46,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:46,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:46,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 20:38:46,317 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:46,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:46,317 INFO L85 PathProgramCache]: Analyzing trace with hash -911123979, now seen corresponding path program 1 times [2022-07-19 20:38:46,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:46,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943015026] [2022-07-19 20:38:46,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:46,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:46,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:46,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:38:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:46,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:38:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:46,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:38:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:46,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:38:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:46,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:46,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:46,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943015026] [2022-07-19 20:38:46,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943015026] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:46,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:46,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:46,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247787014] [2022-07-19 20:38:46,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:46,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:46,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:46,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:46,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:46,431 INFO L87 Difference]: Start difference. First operand 11790 states and 17683 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:51,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:51,311 INFO L93 Difference]: Finished difference Result 40457 states and 62934 transitions. [2022-07-19 20:38:51,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:38:51,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-19 20:38:51,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:51,410 INFO L225 Difference]: With dead ends: 40457 [2022-07-19 20:38:51,410 INFO L226 Difference]: Without dead ends: 31021 [2022-07-19 20:38:51,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:38:51,444 INFO L413 NwaCegarLoop]: 1049 mSDtfsCounter, 1533 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 3012 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 3134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 3012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:51,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1560 Valid, 2852 Invalid, 3134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 3012 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 20:38:51,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31021 states. [2022-07-19 20:38:52,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31021 to 20944. [2022-07-19 20:38:52,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20944 states, 18820 states have (on average 1.5143995749202976) internal successors, (28501), 18919 states have internal predecessors, (28501), 1416 states have call successors, (1416), 573 states have call predecessors, (1416), 706 states have return successors, (2324), 1517 states have call predecessors, (2324), 1412 states have call successors, (2324) [2022-07-19 20:38:53,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20944 states to 20944 states and 32241 transitions. [2022-07-19 20:38:53,033 INFO L78 Accepts]: Start accepts. Automaton has 20944 states and 32241 transitions. Word has length 146 [2022-07-19 20:38:53,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:53,034 INFO L495 AbstractCegarLoop]: Abstraction has 20944 states and 32241 transitions. [2022-07-19 20:38:53,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:53,034 INFO L276 IsEmpty]: Start isEmpty. Operand 20944 states and 32241 transitions. [2022-07-19 20:38:53,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 20:38:53,044 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:53,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:53,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 20:38:53,044 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:53,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:53,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1243767117, now seen corresponding path program 1 times [2022-07-19 20:38:53,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:53,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730085643] [2022-07-19 20:38:53,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:53,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:53,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:53,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:38:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:53,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:38:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:53,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:38:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:53,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:38:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:53,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:53,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730085643] [2022-07-19 20:38:53,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730085643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:53,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:53,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:53,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049358826] [2022-07-19 20:38:53,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:53,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:53,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:53,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:53,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:53,152 INFO L87 Difference]: Start difference. First operand 20944 states and 32241 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:00,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:39:00,674 INFO L93 Difference]: Finished difference Result 76745 states and 120970 transitions. [2022-07-19 20:39:00,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:39:00,675 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-19 20:39:00,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:39:00,841 INFO L225 Difference]: With dead ends: 76745 [2022-07-19 20:39:00,841 INFO L226 Difference]: Without dead ends: 58155 [2022-07-19 20:39:00,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:39:00,897 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 1768 mSDsluCounter, 1800 mSDsCounter, 0 mSdLazyCounter, 2562 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1806 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 2687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:39:00,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1806 Valid, 2691 Invalid, 2687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2562 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 20:39:00,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58155 states. [2022-07-19 20:39:04,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58155 to 38577. [2022-07-19 20:39:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38577 states, 34949 states have (on average 1.5244785258519558) internal successors, (53279), 35112 states have internal predecessors, (53279), 2472 states have call successors, (2472), 957 states have call predecessors, (2472), 1154 states have return successors, (4902), 2637 states have call predecessors, (4902), 2468 states have call successors, (4902) [2022-07-19 20:39:04,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38577 states to 38577 states and 60653 transitions. [2022-07-19 20:39:04,175 INFO L78 Accepts]: Start accepts. Automaton has 38577 states and 60653 transitions. Word has length 146 [2022-07-19 20:39:04,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:39:04,176 INFO L495 AbstractCegarLoop]: Abstraction has 38577 states and 60653 transitions. [2022-07-19 20:39:04,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:04,176 INFO L276 IsEmpty]: Start isEmpty. Operand 38577 states and 60653 transitions. [2022-07-19 20:39:04,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 20:39:04,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:39:04,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:39:04,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 20:39:04,195 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:39:04,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:39:04,196 INFO L85 PathProgramCache]: Analyzing trace with hash 685165109, now seen corresponding path program 1 times [2022-07-19 20:39:04,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:39:04,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079976286] [2022-07-19 20:39:04,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:39:04,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:39:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:04,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:39:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:04,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:39:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:04,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:39:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:04,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:39:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:04,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:39:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:04,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:39:04,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:39:04,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079976286] [2022-07-19 20:39:04,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079976286] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:39:04,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:39:04,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:39:04,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431053183] [2022-07-19 20:39:04,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:39:04,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:39:04,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:39:04,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:39:04,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:39:04,311 INFO L87 Difference]: Start difference. First operand 38577 states and 60653 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:17,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:39:17,644 INFO L93 Difference]: Finished difference Result 146216 states and 233576 transitions. [2022-07-19 20:39:17,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:39:17,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-19 20:39:17,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:39:18,006 INFO L225 Difference]: With dead ends: 146216 [2022-07-19 20:39:18,006 INFO L226 Difference]: Without dead ends: 109993 [2022-07-19 20:39:18,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:39:18,116 INFO L413 NwaCegarLoop]: 1011 mSDtfsCounter, 1511 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 2934 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 3056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:39:18,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 2814 Invalid, 3056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2934 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 20:39:18,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109993 states. [2022-07-19 20:39:24,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109993 to 74418. [2022-07-19 20:39:24,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74418 states, 67846 states have (on average 1.5336055183798603) internal successors, (104049), 68137 states have internal predecessors, (104049), 4520 states have call successors, (4520), 1725 states have call predecessors, (4520), 2050 states have return successors, (11452), 4813 states have call predecessors, (11452), 4516 states have call successors, (11452) [2022-07-19 20:39:24,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74418 states to 74418 states and 120021 transitions. [2022-07-19 20:39:24,470 INFO L78 Accepts]: Start accepts. Automaton has 74418 states and 120021 transitions. Word has length 146 [2022-07-19 20:39:24,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:39:24,471 INFO L495 AbstractCegarLoop]: Abstraction has 74418 states and 120021 transitions. [2022-07-19 20:39:24,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:24,471 INFO L276 IsEmpty]: Start isEmpty. Operand 74418 states and 120021 transitions. [2022-07-19 20:39:24,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 20:39:24,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:39:24,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:39:24,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 20:39:24,528 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:39:24,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:39:24,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1607915917, now seen corresponding path program 1 times [2022-07-19 20:39:24,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:39:24,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253922925] [2022-07-19 20:39:24,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:39:24,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:39:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:24,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:39:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:24,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:39:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:24,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:39:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:24,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:39:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:24,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:39:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:24,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:39:24,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:39:24,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253922925] [2022-07-19 20:39:24,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253922925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:39:24,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:39:24,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:39:24,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148839446] [2022-07-19 20:39:24,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:39:24,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:39:24,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:39:24,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:39:24,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:39:24,640 INFO L87 Difference]: Start difference. First operand 74418 states and 120021 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:49,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:39:49,623 INFO L93 Difference]: Finished difference Result 284583 states and 464174 transitions. [2022-07-19 20:39:49,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:39:49,623 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-19 20:39:49,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:39:50,593 INFO L225 Difference]: With dead ends: 284583 [2022-07-19 20:39:50,593 INFO L226 Difference]: Without dead ends: 212519 [2022-07-19 20:39:50,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:39:50,815 INFO L413 NwaCegarLoop]: 882 mSDtfsCounter, 1689 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 2547 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 2672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:39:50,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1727 Valid, 2685 Invalid, 2672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2547 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 20:39:50,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212519 states.