./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.12.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ae0127-2b22-4ae3-bf85-f37676e7bc89/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ae0127-2b22-4ae3-bf85-f37676e7bc89/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ae0127-2b22-4ae3-bf85-f37676e7bc89/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ae0127-2b22-4ae3-bf85-f37676e7bc89/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.12.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ae0127-2b22-4ae3-bf85-f37676e7bc89/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ae0127-2b22-4ae3-bf85-f37676e7bc89/bin/uautomizer-DrprNOufMa --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 12040a15adbfbac5c2e9f20bae26c10925cfaa6501d267b475499f3f937f66c2 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:24:44,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:24:44,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:24:44,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:24:44,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:24:44,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:24:44,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:24:44,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:24:44,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:24:44,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:24:44,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:24:44,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:24:44,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:24:44,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:24:44,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:24:44,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:24:44,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:24:44,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:24:44,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:24:44,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:24:44,480 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:24:44,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:24:44,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:24:44,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:24:44,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:24:44,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:24:44,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:24:44,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:24:44,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:24:44,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:24:44,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:24:44,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:24:44,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:24:44,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:24:44,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:24:44,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:24:44,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:24:44,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:24:44,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:24:44,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:24:44,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:24:44,494 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ae0127-2b22-4ae3-bf85-f37676e7bc89/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:24:44,517 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:24:44,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:24:44,517 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:24:44,517 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:24:44,518 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:24:44,518 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:24:44,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:24:44,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:24:44,519 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:24:44,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:24:44,519 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:24:44,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:24:44,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:24:44,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:24:44,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:24:44,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:24:44,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:24:44,521 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:24:44,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:24:44,521 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:24:44,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:24:44,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:24:44,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:24:44,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:24:44,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:24:44,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:24:44,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:24:44,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:24:44,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:24:44,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:24:44,522 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:24:44,522 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:24:44,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:24:44,523 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:24:44,523 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ae0127-2b22-4ae3-bf85-f37676e7bc89/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ae0127-2b22-4ae3-bf85-f37676e7bc89/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12040a15adbfbac5c2e9f20bae26c10925cfaa6501d267b475499f3f937f66c2 [2021-12-06 17:24:44,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:24:44,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:24:44,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:24:44,734 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:24:44,735 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:24:44,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ae0127-2b22-4ae3-bf85-f37676e7bc89/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.12.cil-2.c [2021-12-06 17:24:44,786 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ae0127-2b22-4ae3-bf85-f37676e7bc89/bin/uautomizer-DrprNOufMa/data/91e3c78ae/f8092512a92f489eb175157919a990b3/FLAG0a07db3b4 [2021-12-06 17:24:45,533 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:24:45,533 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ae0127-2b22-4ae3-bf85-f37676e7bc89/sv-benchmarks/c/combinations/Problem05_label48+token_ring.12.cil-2.c [2021-12-06 17:24:45,569 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ae0127-2b22-4ae3-bf85-f37676e7bc89/bin/uautomizer-DrprNOufMa/data/91e3c78ae/f8092512a92f489eb175157919a990b3/FLAG0a07db3b4 [2021-12-06 17:24:45,832 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ae0127-2b22-4ae3-bf85-f37676e7bc89/bin/uautomizer-DrprNOufMa/data/91e3c78ae/f8092512a92f489eb175157919a990b3 [2021-12-06 17:24:45,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:24:45,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:24:45,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:24:45,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:24:45,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:24:45,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:24:45" (1/1) ... [2021-12-06 17:24:45,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3012c5a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:24:45, skipping insertion in model container [2021-12-06 17:24:45,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:24:45" (1/1) ... [2021-12-06 17:24:45,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:24:46,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:24:47,324 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ae0127-2b22-4ae3-bf85-f37676e7bc89/sv-benchmarks/c/combinations/Problem05_label48+token_ring.12.cil-2.c[375709,375722] [2021-12-06 17:24:47,348 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ae0127-2b22-4ae3-bf85-f37676e7bc89/sv-benchmarks/c/combinations/Problem05_label48+token_ring.12.cil-2.c[383339,383352] [2021-12-06 17:24:47,596 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:24:47,604 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:24:48,371 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ae0127-2b22-4ae3-bf85-f37676e7bc89/sv-benchmarks/c/combinations/Problem05_label48+token_ring.12.cil-2.c[375709,375722] [2021-12-06 17:24:48,387 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ae0127-2b22-4ae3-bf85-f37676e7bc89/sv-benchmarks/c/combinations/Problem05_label48+token_ring.12.cil-2.c[383339,383352] [2021-12-06 17:24:48,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:24:48,462 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:24:48,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:24:48 WrapperNode [2021-12-06 17:24:48,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:24:48,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:24:48,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:24:48,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:24:48,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:24:48" (1/1) ... [2021-12-06 17:24:48,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:24:48" (1/1) ... [2021-12-06 17:24:48,804 INFO L137 Inliner]: procedures = 68, calls = 77, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 13199 [2021-12-06 17:24:48,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:24:48,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:24:48,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:24:48,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:24:48,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:24:48" (1/1) ... [2021-12-06 17:24:48,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:24:48" (1/1) ... [2021-12-06 17:24:48,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:24:48" (1/1) ... [2021-12-06 17:24:48,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:24:48" (1/1) ... [2021-12-06 17:24:49,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:24:48" (1/1) ... [2021-12-06 17:24:49,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:24:48" (1/1) ... [2021-12-06 17:24:49,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:24:48" (1/1) ... [2021-12-06 17:24:49,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:24:49,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:24:49,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:24:49,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:24:49,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:24:48" (1/1) ... [2021-12-06 17:24:49,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:24:49,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ae0127-2b22-4ae3-bf85-f37676e7bc89/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:24:49,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ae0127-2b22-4ae3-bf85-f37676e7bc89/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:24:49,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ae0127-2b22-4ae3-bf85-f37676e7bc89/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:24:49,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:24:49,183 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-06 17:24:49,183 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-06 17:24:49,183 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-06 17:24:49,183 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-06 17:24:49,183 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-06 17:24:49,183 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-06 17:24:49,183 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-06 17:24:49,183 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-06 17:24:49,183 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-06 17:24:49,183 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-06 17:24:49,184 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-06 17:24:49,184 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-06 17:24:49,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:24:49,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:24:49,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:24:49,317 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:24:49,319 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:24:53,483 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:24:53,512 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:24:53,512 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-06 17:24:53,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:24:53 BoogieIcfgContainer [2021-12-06 17:24:53,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:24:53,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:24:53,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:24:53,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:24:53,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:24:45" (1/3) ... [2021-12-06 17:24:53,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@445a9375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:24:53, skipping insertion in model container [2021-12-06 17:24:53,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:24:48" (2/3) ... [2021-12-06 17:24:53,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@445a9375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:24:53, skipping insertion in model container [2021-12-06 17:24:53,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:24:53" (3/3) ... [2021-12-06 17:24:53,522 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.12.cil-2.c [2021-12-06 17:24:53,526 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:24:53,526 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 17:24:53,568 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:24:53,573 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 17:24:53,573 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 17:24:53,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-06 17:24:53,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:24:53,637 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:24:53,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:24:53,639 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:24:53,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:24:53,643 INFO L85 PathProgramCache]: Analyzing trace with hash 10619845, now seen corresponding path program 1 times [2021-12-06 17:24:53,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:24:53,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77250749] [2021-12-06 17:24:53,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:24:53,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:24:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:53,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:24:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:53,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:24:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:53,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:24:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:53,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:24:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:53,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:24:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:54,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:24:54,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:24:54,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77250749] [2021-12-06 17:24:54,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77250749] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:24:54,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:24:54,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:24:54,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125058575] [2021-12-06 17:24:54,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:24:54,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:24:54,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:24:54,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:24:54,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:24:54,040 INFO L87 Difference]: Start difference. First operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:24:55,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:24:55,473 INFO L93 Difference]: Finished difference Result 5266 states and 9664 transitions. [2021-12-06 17:24:55,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:24:55,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-06 17:24:55,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:24:55,506 INFO L225 Difference]: With dead ends: 5266 [2021-12-06 17:24:55,507 INFO L226 Difference]: Without dead ends: 2640 [2021-12-06 17:24:55,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:24:55,520 INFO L933 BasicCegarLoop]: 4683 mSDtfsCounter, 1034 mSDsluCounter, 12485 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 17168 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:24:55,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1058 Valid, 17168 Invalid, 763 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 17:24:55,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-12-06 17:24:55,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2021-12-06 17:24:55,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8262987012987013) internal successors, (4500), 2466 states have internal predecessors, (4500), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-06 17:24:55,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4552 transitions. [2021-12-06 17:24:55,644 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4552 transitions. Word has length 178 [2021-12-06 17:24:55,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:24:55,645 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 4552 transitions. [2021-12-06 17:24:55,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:24:55,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4552 transitions. [2021-12-06 17:24:55,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:24:55,650 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:24:55,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:24:55,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:24:55,651 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:24:55,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:24:55,651 INFO L85 PathProgramCache]: Analyzing trace with hash -79440445, now seen corresponding path program 1 times [2021-12-06 17:24:55,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:24:55,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259450781] [2021-12-06 17:24:55,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:24:55,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:24:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:55,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:24:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:55,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:24:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:55,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:24:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:55,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:24:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:55,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:24:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:55,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:24:55,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:24:55,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259450781] [2021-12-06 17:24:55,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259450781] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:24:55,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:24:55,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:24:55,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296533799] [2021-12-06 17:24:55,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:24:55,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:24:55,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:24:55,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:24:55,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:24:55,808 INFO L87 Difference]: Start difference. First operand 2498 states and 4552 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:24:57,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:24:57,104 INFO L93 Difference]: Finished difference Result 3002 states and 5366 transitions. [2021-12-06 17:24:57,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:24:57,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-06 17:24:57,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:24:57,122 INFO L225 Difference]: With dead ends: 3002 [2021-12-06 17:24:57,122 INFO L226 Difference]: Without dead ends: 2640 [2021-12-06 17:24:57,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:24:57,127 INFO L933 BasicCegarLoop]: 4613 mSDtfsCounter, 1020 mSDsluCounter, 12282 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 16895 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:24:57,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1044 Valid, 16895 Invalid, 762 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 17:24:57,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-12-06 17:24:57,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2021-12-06 17:24:57,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8258928571428572) internal successors, (4499), 2466 states have internal predecessors, (4499), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-06 17:24:57,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4551 transitions. [2021-12-06 17:24:57,205 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4551 transitions. Word has length 178 [2021-12-06 17:24:57,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:24:57,205 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 4551 transitions. [2021-12-06 17:24:57,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:24:57,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4551 transitions. [2021-12-06 17:24:57,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:24:57,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:24:57,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:24:57,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 17:24:57,209 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:24:57,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:24:57,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1483309631, now seen corresponding path program 1 times [2021-12-06 17:24:57,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:24:57,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353599755] [2021-12-06 17:24:57,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:24:57,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:24:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:57,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:24:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:57,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:24:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:57,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:24:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:57,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:24:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:57,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:24:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:57,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:24:57,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:24:57,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353599755] [2021-12-06 17:24:57,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353599755] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:24:57,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:24:57,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:24:57,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107487503] [2021-12-06 17:24:57,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:24:57,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:24:57,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:24:57,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:24:57,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:24:57,375 INFO L87 Difference]: Start difference. First operand 2498 states and 4551 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:24:59,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:24:59,522 INFO L93 Difference]: Finished difference Result 3514 states and 6198 transitions. [2021-12-06 17:24:59,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:24:59,522 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-06 17:24:59,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:24:59,536 INFO L225 Difference]: With dead ends: 3514 [2021-12-06 17:24:59,536 INFO L226 Difference]: Without dead ends: 3157 [2021-12-06 17:24:59,538 INFO L932 BasicCegarLoop]: 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 [2021-12-06 17:24:59,539 INFO L933 BasicCegarLoop]: 4665 mSDtfsCounter, 5509 mSDsluCounter, 12878 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5528 SdHoareTripleChecker+Valid, 17543 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:24:59,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5528 Valid, 17543 Invalid, 2068 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 1952 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 17:24:59,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2021-12-06 17:24:59,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 2874. [2021-12-06 17:24:59,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2812 states have (on average 1.7976529160739687) internal successors, (5055), 2815 states have internal predecessors, (5055), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-06 17:24:59,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 5152 transitions. [2021-12-06 17:24:59,621 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 5152 transitions. Word has length 178 [2021-12-06 17:24:59,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:24:59,621 INFO L470 AbstractCegarLoop]: Abstraction has 2874 states and 5152 transitions. [2021-12-06 17:24:59,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:24:59,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 5152 transitions. [2021-12-06 17:24:59,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:24:59,623 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:24:59,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:24:59,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 17:24:59,624 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:24:59,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:24:59,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1935672389, now seen corresponding path program 1 times [2021-12-06 17:24:59,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:24:59,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697426688] [2021-12-06 17:24:59,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:24:59,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:24:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:59,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:24:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:59,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:24:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:59,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:24:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:59,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:24:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:59,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:24:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:24:59,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:24:59,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697426688] [2021-12-06 17:24:59,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697426688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:24:59,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:24:59,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:24:59,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994840699] [2021-12-06 17:24:59,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:24:59,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:24:59,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:24:59,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:24:59,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:24:59,783 INFO L87 Difference]: Start difference. First operand 2874 states and 5152 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:25:01,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:25:01,232 INFO L93 Difference]: Finished difference Result 3912 states and 6843 transitions. [2021-12-06 17:25:01,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:25:01,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-06 17:25:01,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:25:01,246 INFO L225 Difference]: With dead ends: 3912 [2021-12-06 17:25:01,246 INFO L226 Difference]: Without dead ends: 3179 [2021-12-06 17:25:01,248 INFO L932 BasicCegarLoop]: 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 [2021-12-06 17:25:01,249 INFO L933 BasicCegarLoop]: 4608 mSDtfsCounter, 5073 mSDsluCounter, 16762 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5093 SdHoareTripleChecker+Valid, 21370 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:25:01,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5093 Valid, 21370 Invalid, 1597 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 17:25:01,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2021-12-06 17:25:01,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 2874. [2021-12-06 17:25:01,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2812 states have (on average 1.7969416785206258) internal successors, (5053), 2815 states have internal predecessors, (5053), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-06 17:25:01,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 5150 transitions. [2021-12-06 17:25:01,331 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 5150 transitions. Word has length 178 [2021-12-06 17:25:01,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:25:01,332 INFO L470 AbstractCegarLoop]: Abstraction has 2874 states and 5150 transitions. [2021-12-06 17:25:01,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:25:01,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 5150 transitions. [2021-12-06 17:25:01,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:25:01,334 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:25:01,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:25:01,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 17:25:01,335 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:25:01,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:25:01,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1324403331, now seen corresponding path program 1 times [2021-12-06 17:25:01,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:25:01,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667548274] [2021-12-06 17:25:01,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:25:01,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:25:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:01,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:25:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:01,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:25:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:01,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:25:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:01,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:25:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:01,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:25:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:01,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:25:01,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:25:01,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667548274] [2021-12-06 17:25:01,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667548274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:25:01,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:25:01,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:25:01,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499656662] [2021-12-06 17:25:01,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:25:01,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:25:01,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:25:01,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:25:01,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:25:01,458 INFO L87 Difference]: Start difference. First operand 2874 states and 5150 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:25:03,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:25:03,970 INFO L93 Difference]: Finished difference Result 4423 states and 7658 transitions. [2021-12-06 17:25:03,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:25:03,971 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-06 17:25:03,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:25:03,986 INFO L225 Difference]: With dead ends: 4423 [2021-12-06 17:25:03,986 INFO L226 Difference]: Without dead ends: 3690 [2021-12-06 17:25:03,989 INFO L932 BasicCegarLoop]: 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 [2021-12-06 17:25:03,989 INFO L933 BasicCegarLoop]: 4728 mSDtfsCounter, 5634 mSDsluCounter, 17170 mSDsCounter, 0 mSdLazyCounter, 2729 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5653 SdHoareTripleChecker+Valid, 21898 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:25:03,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5653 Valid, 21898 Invalid, 2836 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 2729 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 17:25:03,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2021-12-06 17:25:04,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 3223. [2021-12-06 17:25:04,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 3133 states have (on average 1.7727417810405361) internal successors, (5554), 3137 states have internal predecessors, (5554), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2021-12-06 17:25:04,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 5695 transitions. [2021-12-06 17:25:04,086 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 5695 transitions. Word has length 178 [2021-12-06 17:25:04,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:25:04,086 INFO L470 AbstractCegarLoop]: Abstraction has 3223 states and 5695 transitions. [2021-12-06 17:25:04,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:25:04,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 5695 transitions. [2021-12-06 17:25:04,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:25:04,088 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:25:04,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:25:04,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 17:25:04,089 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:25:04,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:25:04,089 INFO L85 PathProgramCache]: Analyzing trace with hash -80788347, now seen corresponding path program 1 times [2021-12-06 17:25:04,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:25:04,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796377462] [2021-12-06 17:25:04,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:25:04,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:25:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:04,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:25:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:04,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:25:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:04,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:25:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:04,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:25:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:04,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:25:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:04,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:25:04,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:25:04,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796377462] [2021-12-06 17:25:04,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796377462] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:25:04,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:25:04,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:25:04,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066291469] [2021-12-06 17:25:04,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:25:04,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:25:04,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:25:04,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:25:04,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:25:04,209 INFO L87 Difference]: Start difference. First operand 3223 states and 5695 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:25:06,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:25:06,746 INFO L93 Difference]: Finished difference Result 5766 states and 9803 transitions. [2021-12-06 17:25:06,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:25:06,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-06 17:25:06,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:25:06,767 INFO L225 Difference]: With dead ends: 5766 [2021-12-06 17:25:06,767 INFO L226 Difference]: Without dead ends: 4684 [2021-12-06 17:25:06,771 INFO L932 BasicCegarLoop]: 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 [2021-12-06 17:25:06,772 INFO L933 BasicCegarLoop]: 4950 mSDtfsCounter, 5535 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 3038 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5554 SdHoareTripleChecker+Valid, 22714 SdHoareTripleChecker+Invalid, 3124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:25:06,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5554 Valid, 22714 Invalid, 3124 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3038 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 17:25:06,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4684 states. [2021-12-06 17:25:06,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4684 to 3923. [2021-12-06 17:25:06,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3777 states have (on average 1.736563410113847) internal successors, (6559), 3783 states have internal predecessors, (6559), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-06 17:25:06,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6792 transitions. [2021-12-06 17:25:06,910 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6792 transitions. Word has length 178 [2021-12-06 17:25:06,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:25:06,910 INFO L470 AbstractCegarLoop]: Abstraction has 3923 states and 6792 transitions. [2021-12-06 17:25:06,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:25:06,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6792 transitions. [2021-12-06 17:25:06,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:25:06,913 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:25:06,913 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:25:06,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 17:25:06,913 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:25:06,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:25:06,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1813545539, now seen corresponding path program 1 times [2021-12-06 17:25:06,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:25:06,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296845701] [2021-12-06 17:25:06,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:25:06,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:25:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:06,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:25:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:06,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:25:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:07,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:25:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:07,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:25:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:07,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:25:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:07,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:25:07,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:25:07,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296845701] [2021-12-06 17:25:07,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296845701] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:25:07,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:25:07,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:25:07,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981369940] [2021-12-06 17:25:07,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:25:07,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:25:07,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:25:07,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:25:07,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:25:07,058 INFO L87 Difference]: Start difference. First operand 3923 states and 6792 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:25:08,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:25:08,398 INFO L93 Difference]: Finished difference Result 6452 states and 10885 transitions. [2021-12-06 17:25:08,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:25:08,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-06 17:25:08,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:25:08,418 INFO L225 Difference]: With dead ends: 6452 [2021-12-06 17:25:08,418 INFO L226 Difference]: Without dead ends: 4670 [2021-12-06 17:25:08,423 INFO L932 BasicCegarLoop]: 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 [2021-12-06 17:25:08,424 INFO L933 BasicCegarLoop]: 4593 mSDtfsCounter, 5240 mSDsluCounter, 12610 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5260 SdHoareTripleChecker+Valid, 17203 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:25:08,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5260 Valid, 17203 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 17:25:08,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4670 states. [2021-12-06 17:25:08,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4670 to 3923. [2021-12-06 17:25:08,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3777 states have (on average 1.73523960815462) internal successors, (6554), 3783 states have internal predecessors, (6554), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-06 17:25:08,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6787 transitions. [2021-12-06 17:25:08,560 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6787 transitions. Word has length 178 [2021-12-06 17:25:08,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:25:08,560 INFO L470 AbstractCegarLoop]: Abstraction has 3923 states and 6787 transitions. [2021-12-06 17:25:08,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:25:08,561 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6787 transitions. [2021-12-06 17:25:08,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:25:08,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:25:08,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:25:08,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 17:25:08,563 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:25:08,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:25:08,564 INFO L85 PathProgramCache]: Analyzing trace with hash 890378113, now seen corresponding path program 1 times [2021-12-06 17:25:08,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:25:08,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533449819] [2021-12-06 17:25:08,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:25:08,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:25:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:08,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:25:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:08,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:25:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:08,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:25:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:08,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:25:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:08,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:25:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:08,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:25:08,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:25:08,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533449819] [2021-12-06 17:25:08,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533449819] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:25:08,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:25:08,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:25:08,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585577010] [2021-12-06 17:25:08,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:25:08,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:25:08,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:25:08,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:25:08,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:25:08,684 INFO L87 Difference]: Start difference. First operand 3923 states and 6787 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:25:10,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:25:10,183 INFO L93 Difference]: Finished difference Result 6446 states and 10858 transitions. [2021-12-06 17:25:10,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:25:10,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-06 17:25:10,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:25:10,202 INFO L225 Difference]: With dead ends: 6446 [2021-12-06 17:25:10,203 INFO L226 Difference]: Without dead ends: 4664 [2021-12-06 17:25:10,208 INFO L932 BasicCegarLoop]: 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 [2021-12-06 17:25:10,209 INFO L933 BasicCegarLoop]: 4589 mSDtfsCounter, 5072 mSDsluCounter, 16761 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5092 SdHoareTripleChecker+Valid, 21350 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:25:10,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5092 Valid, 21350 Invalid, 1557 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 17:25:10,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4664 states. [2021-12-06 17:25:10,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4664 to 3923. [2021-12-06 17:25:10,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3777 states have (on average 1.7339158061953932) internal successors, (6549), 3783 states have internal predecessors, (6549), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-06 17:25:10,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6782 transitions. [2021-12-06 17:25:10,341 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6782 transitions. Word has length 178 [2021-12-06 17:25:10,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:25:10,342 INFO L470 AbstractCegarLoop]: Abstraction has 3923 states and 6782 transitions. [2021-12-06 17:25:10,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:25:10,342 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6782 transitions. [2021-12-06 17:25:10,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:25:10,344 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:25:10,344 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:25:10,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 17:25:10,344 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:25:10,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:25:10,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1276240515, now seen corresponding path program 1 times [2021-12-06 17:25:10,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:25:10,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605833110] [2021-12-06 17:25:10,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:25:10,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:25:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:10,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:25:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:10,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:25:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:10,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:25:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:10,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:25:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:10,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:25:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:10,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:25:10,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:25:10,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605833110] [2021-12-06 17:25:10,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605833110] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:25:10,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:25:10,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:25:10,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624933435] [2021-12-06 17:25:10,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:25:10,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:25:10,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:25:10,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:25:10,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:25:10,485 INFO L87 Difference]: Start difference. First operand 3923 states and 6782 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:25:11,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:25:11,718 INFO L93 Difference]: Finished difference Result 6440 states and 10831 transitions. [2021-12-06 17:25:11,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:25:11,718 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-06 17:25:11,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:25:11,727 INFO L225 Difference]: With dead ends: 6440 [2021-12-06 17:25:11,727 INFO L226 Difference]: Without dead ends: 4658 [2021-12-06 17:25:11,731 INFO L932 BasicCegarLoop]: 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 [2021-12-06 17:25:11,732 INFO L933 BasicCegarLoop]: 4585 mSDtfsCounter, 5236 mSDsluCounter, 12610 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5256 SdHoareTripleChecker+Valid, 17195 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:25:11,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5256 Valid, 17195 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 17:25:11,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2021-12-06 17:25:11,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 3923. [2021-12-06 17:25:11,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3777 states have (on average 1.7325920042361662) internal successors, (6544), 3783 states have internal predecessors, (6544), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-06 17:25:11,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6777 transitions. [2021-12-06 17:25:11,861 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6777 transitions. Word has length 178 [2021-12-06 17:25:11,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:25:11,862 INFO L470 AbstractCegarLoop]: Abstraction has 3923 states and 6777 transitions. [2021-12-06 17:25:11,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:25:11,862 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6777 transitions. [2021-12-06 17:25:11,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:25:11,863 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:25:11,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:25:11,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 17:25:11,864 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:25:11,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:25:11,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1011593025, now seen corresponding path program 1 times [2021-12-06 17:25:11,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:25:11,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059253119] [2021-12-06 17:25:11,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:25:11,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:25:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:11,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:25:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:11,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:25:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:11,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:25:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:12,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:25:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:12,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:25:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:25:12,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:25:12,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059253119] [2021-12-06 17:25:12,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059253119] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:25:12,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:25:12,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:25:12,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622131834] [2021-12-06 17:25:12,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:25:12,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:25:12,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:25:12,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:25:12,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:25:12,014 INFO L87 Difference]: Start difference. First operand 3923 states and 6777 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:25:14,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:25:14,788 INFO L93 Difference]: Finished difference Result 8330 states and 13794 transitions. [2021-12-06 17:25:14,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:25:14,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-06 17:25:14,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:25:14,801 INFO L225 Difference]: With dead ends: 8330 [2021-12-06 17:25:14,801 INFO L226 Difference]: Without dead ends: 6548 [2021-12-06 17:25:14,805 INFO L932 BasicCegarLoop]: 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 [2021-12-06 17:25:14,806 INFO L933 BasicCegarLoop]: 4922 mSDtfsCounter, 5504 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 2964 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5523 SdHoareTripleChecker+Valid, 22686 SdHoareTripleChecker+Invalid, 3049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:25:14,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5523 Valid, 22686 Invalid, 3049 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 2964 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 17:25:14,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6548 states. [2021-12-06 17:25:15,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6548 to 5345. [2021-12-06 17:25:15,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5345 states, 5087 states have (on average 1.6850796147041478) internal successors, (8572), 5097 states have internal predecessors, (8572), 194 states have call successors, (194), 54 states have call predecessors, (194), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2021-12-06 17:25:15,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5345 states to 5345 states and 8995 transitions. [2021-12-06 17:25:15,025 INFO L78 Accepts]: Start accepts. Automaton has 5345 states and 8995 transitions. Word has length 178 [2021-12-06 17:25:15,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:25:15,025 INFO L470 AbstractCegarLoop]: Abstraction has 5345 states and 8995 transitions. [2021-12-06 17:25:15,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:25:15,026 INFO L276 IsEmpty]: Start isEmpty. Operand 5345 states and 8995 transitions. [2021-12-06 17:25:15,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:25:15,028 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:25:15,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:25:15,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 17:25:15,028 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:25:15,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:25:15,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1352248637, now seen corresponding path program 1 times [2021-12-06 17:25:15,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:25:15,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480364353] [2021-12-06 17:25:15,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:25:15,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:25:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:15,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:25:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:15,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:25:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:15,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:25:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:15,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:25:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:15,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:25:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:15,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:25:15,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:25:15,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480364353] [2021-12-06 17:25:15,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480364353] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:25:15,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:25:15,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:25:15,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614648422] [2021-12-06 17:25:15,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:25:15,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:25:15,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:25:15,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:25:15,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:25:15,140 INFO L87 Difference]: Start difference. First operand 5345 states and 8995 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:25:18,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:25:18,199 INFO L93 Difference]: Finished difference Result 13508 states and 21962 transitions. [2021-12-06 17:25:18,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:25:18,199 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-06 17:25:18,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:25:18,219 INFO L225 Difference]: With dead ends: 13508 [2021-12-06 17:25:18,219 INFO L226 Difference]: Without dead ends: 10304 [2021-12-06 17:25:18,226 INFO L932 BasicCegarLoop]: 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 [2021-12-06 17:25:18,227 INFO L933 BasicCegarLoop]: 4917 mSDtfsCounter, 5503 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5522 SdHoareTripleChecker+Valid, 22681 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:25:18,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5522 Valid, 22681 Invalid, 3041 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 2956 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 17:25:18,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10304 states. [2021-12-06 17:25:18,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10304 to 8188. [2021-12-06 17:25:18,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8188 states, 7706 states have (on average 1.6379444588632235) internal successors, (12622), 7724 states have internal predecessors, (12622), 362 states have call successors, (362), 102 states have call predecessors, (362), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2021-12-06 17:25:18,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8188 states to 8188 states and 13443 transitions. [2021-12-06 17:25:18,629 INFO L78 Accepts]: Start accepts. Automaton has 8188 states and 13443 transitions. Word has length 178 [2021-12-06 17:25:18,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:25:18,630 INFO L470 AbstractCegarLoop]: Abstraction has 8188 states and 13443 transitions. [2021-12-06 17:25:18,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:25:18,630 INFO L276 IsEmpty]: Start isEmpty. Operand 8188 states and 13443 transitions. [2021-12-06 17:25:18,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:25:18,633 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:25:18,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:25:18,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 17:25:18,634 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:25:18,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:25:18,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1619539713, now seen corresponding path program 1 times [2021-12-06 17:25:18,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:25:18,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282853750] [2021-12-06 17:25:18,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:25:18,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:25:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:18,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:25:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:18,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:25:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:18,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:25:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:18,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:25:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:18,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:25:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:18,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:25:18,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:25:18,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282853750] [2021-12-06 17:25:18,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282853750] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:25:18,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:25:18,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:25:18,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797141514] [2021-12-06 17:25:18,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:25:18,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:25:18,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:25:18,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:25:18,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:25:18,744 INFO L87 Difference]: Start difference. First operand 8188 states and 13443 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:25:22,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:25:22,202 INFO L93 Difference]: Finished difference Result 23857 states and 38344 transitions. [2021-12-06 17:25:22,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:25:22,202 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-06 17:25:22,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:25:22,239 INFO L225 Difference]: With dead ends: 23857 [2021-12-06 17:25:22,240 INFO L226 Difference]: Without dead ends: 17810 [2021-12-06 17:25:22,255 INFO L932 BasicCegarLoop]: 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 [2021-12-06 17:25:22,256 INFO L933 BasicCegarLoop]: 4679 mSDtfsCounter, 5599 mSDsluCounter, 17123 mSDsCounter, 0 mSdLazyCounter, 2639 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5618 SdHoareTripleChecker+Valid, 21802 SdHoareTripleChecker+Invalid, 2762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:25:22,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5618 Valid, 21802 Invalid, 2762 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 2639 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 17:25:22,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17810 states. [2021-12-06 17:25:23,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17810 to 13889. [2021-12-06 17:25:23,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13889 states, 12959 states have (on average 1.6007407979010726) internal successors, (20744), 12993 states have internal predecessors, (20744), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-06 17:25:23,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13889 states to 13889 states and 22415 transitions. [2021-12-06 17:25:23,057 INFO L78 Accepts]: Start accepts. Automaton has 13889 states and 22415 transitions. Word has length 178 [2021-12-06 17:25:23,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:25:23,058 INFO L470 AbstractCegarLoop]: Abstraction has 13889 states and 22415 transitions. [2021-12-06 17:25:23,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:25:23,058 INFO L276 IsEmpty]: Start isEmpty. Operand 13889 states and 22415 transitions. [2021-12-06 17:25:23,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:25:23,063 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:25:23,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:25:23,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 17:25:23,064 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:25:23,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:25:23,064 INFO L85 PathProgramCache]: Analyzing trace with hash -778448125, now seen corresponding path program 1 times [2021-12-06 17:25:23,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:25:23,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708049299] [2021-12-06 17:25:23,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:25:23,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:25:23,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:23,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:25:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:23,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:25:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:23,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:25:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:23,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:25:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:23,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:25:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:23,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:25:23,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:25:23,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708049299] [2021-12-06 17:25:23,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708049299] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:25:23,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:25:23,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:25:23,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712435542] [2021-12-06 17:25:23,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:25:23,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:25:23,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:25:23,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:25:23,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:25:23,187 INFO L87 Difference]: Start difference. First operand 13889 states and 22415 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:25:27,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:25:27,956 INFO L93 Difference]: Finished difference Result 44556 states and 71302 transitions. [2021-12-06 17:25:27,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:25:27,956 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-06 17:25:27,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:25:28,028 INFO L225 Difference]: With dead ends: 44556 [2021-12-06 17:25:28,028 INFO L226 Difference]: Without dead ends: 32808 [2021-12-06 17:25:28,058 INFO L932 BasicCegarLoop]: 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 [2021-12-06 17:25:28,058 INFO L933 BasicCegarLoop]: 4905 mSDtfsCounter, 5504 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 2937 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5523 SdHoareTripleChecker+Valid, 22669 SdHoareTripleChecker+Invalid, 3025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:25:28,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5523 Valid, 22669 Invalid, 3025 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 2937 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 17:25:28,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32808 states. [2021-12-06 17:25:29,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32808 to 25322. [2021-12-06 17:25:29,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25322 states, 23496 states have (on average 1.5761831801157644) internal successors, (37034), 23562 states have internal predecessors, (37034), 1370 states have call successors, (1370), 390 states have call predecessors, (1370), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2021-12-06 17:25:29,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25322 states to 25322 states and 40567 transitions. [2021-12-06 17:25:29,747 INFO L78 Accepts]: Start accepts. Automaton has 25322 states and 40567 transitions. Word has length 178 [2021-12-06 17:25:29,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:25:29,748 INFO L470 AbstractCegarLoop]: Abstraction has 25322 states and 40567 transitions. [2021-12-06 17:25:29,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:25:29,748 INFO L276 IsEmpty]: Start isEmpty. Operand 25322 states and 40567 transitions. [2021-12-06 17:25:29,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:25:29,757 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:25:29,757 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:25:29,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 17:25:29,757 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:25:29,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:25:29,758 INFO L85 PathProgramCache]: Analyzing trace with hash -440160575, now seen corresponding path program 1 times [2021-12-06 17:25:29,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:25:29,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317670909] [2021-12-06 17:25:29,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:25:29,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:25:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:29,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:25:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:29,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:25:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:29,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:25:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:29,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:25:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:29,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:25:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:29,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:25:29,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:25:29,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317670909] [2021-12-06 17:25:29,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317670909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:25:29,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:25:29,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:25:29,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476318405] [2021-12-06 17:25:29,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:25:29,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:25:29,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:25:29,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:25:29,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:25:29,856 INFO L87 Difference]: Start difference. First operand 25322 states and 40567 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:25:39,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:25:39,291 INFO L93 Difference]: Finished difference Result 97217 states and 155098 transitions. [2021-12-06 17:25:39,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:25:39,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-06 17:25:39,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:25:39,473 INFO L225 Difference]: With dead ends: 97217 [2021-12-06 17:25:39,473 INFO L226 Difference]: Without dead ends: 74036 [2021-12-06 17:25:39,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:25:39,539 INFO L933 BasicCegarLoop]: 4894 mSDtfsCounter, 5985 mSDsluCounter, 17756 mSDsCounter, 0 mSdLazyCounter, 2912 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6017 SdHoareTripleChecker+Valid, 22650 SdHoareTripleChecker+Invalid, 3005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:25:39,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6017 Valid, 22650 Invalid, 3005 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 2912 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-06 17:25:39,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74036 states. [2021-12-06 17:25:42,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74036 to 48124. [2021-12-06 17:25:43,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48124 states, 44570 states have (on average 1.5640565402737268) internal successors, (69710), 44700 states have internal predecessors, (69710), 2650 states have call successors, (2650), 774 states have call predecessors, (2650), 902 states have return successors, (4965), 2777 states have call predecessors, (4965), 2650 states have call successors, (4965) [2021-12-06 17:25:43,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48124 states to 48124 states and 77325 transitions. [2021-12-06 17:25:43,119 INFO L78 Accepts]: Start accepts. Automaton has 48124 states and 77325 transitions. Word has length 178 [2021-12-06 17:25:43,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:25:43,119 INFO L470 AbstractCegarLoop]: Abstraction has 48124 states and 77325 transitions. [2021-12-06 17:25:43,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:25:43,120 INFO L276 IsEmpty]: Start isEmpty. Operand 48124 states and 77325 transitions. [2021-12-06 17:25:43,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:25:43,134 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:25:43,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:25:43,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 17:25:43,134 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:25:43,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:25:43,135 INFO L85 PathProgramCache]: Analyzing trace with hash -980590081, now seen corresponding path program 1 times [2021-12-06 17:25:43,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:25:43,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170247218] [2021-12-06 17:25:43,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:25:43,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:25:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:43,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:25:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:43,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:25:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:43,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:25:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:43,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:25:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:43,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:25:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:43,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:25:43,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:25:43,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170247218] [2021-12-06 17:25:43,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170247218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:25:43,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:25:43,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:25:43,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682192293] [2021-12-06 17:25:43,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:25:43,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:25:43,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:25:43,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:25:43,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:25:43,229 INFO L87 Difference]: Start difference. First operand 48124 states and 77325 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:00,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:00,273 INFO L93 Difference]: Finished difference Result 189233 states and 304194 transitions. [2021-12-06 17:26:00,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:26:00,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-06 17:26:00,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:00,680 INFO L225 Difference]: With dead ends: 189233 [2021-12-06 17:26:00,680 INFO L226 Difference]: Without dead ends: 143250 [2021-12-06 17:26:00,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:26:00,806 INFO L933 BasicCegarLoop]: 5076 mSDtfsCounter, 5610 mSDsluCounter, 17753 mSDsCounter, 0 mSdLazyCounter, 3452 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5628 SdHoareTripleChecker+Valid, 22829 SdHoareTripleChecker+Invalid, 3542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:00,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5628 Valid, 22829 Invalid, 3542 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 3452 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-06 17:26:00,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143250 states. [2021-12-06 17:26:07,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143250 to 93021. [2021-12-06 17:26:07,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93021 states, 86075 states have (on average 1.557897182689515) internal successors, (134096), 86333 states have internal predecessors, (134096), 5146 states have call successors, (5146), 1542 states have call predecessors, (5146), 1798 states have return successors, (11963), 5401 states have call predecessors, (11963), 5146 states have call successors, (11963) [2021-12-06 17:26:08,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93021 states to 93021 states and 151205 transitions. [2021-12-06 17:26:08,163 INFO L78 Accepts]: Start accepts. Automaton has 93021 states and 151205 transitions. Word has length 178 [2021-12-06 17:26:08,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:08,163 INFO L470 AbstractCegarLoop]: Abstraction has 93021 states and 151205 transitions. [2021-12-06 17:26:08,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:08,164 INFO L276 IsEmpty]: Start isEmpty. Operand 93021 states and 151205 transitions. [2021-12-06 17:26:08,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:26:08,193 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:08,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:08,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 17:26:08,194 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:26:08,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:08,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1136570623, now seen corresponding path program 1 times [2021-12-06 17:26:08,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:26:08,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925793019] [2021-12-06 17:26:08,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:08,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:26:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:08,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:26:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:08,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:26:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:08,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:26:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:08,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:26:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:08,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:26:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:08,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:26:08,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:26:08,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925793019] [2021-12-06 17:26:08,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925793019] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:26:08,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:26:08,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:26:08,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138427946] [2021-12-06 17:26:08,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:26:08,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:26:08,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:26:08,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:26:08,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:26:08,292 INFO L87 Difference]: Start difference. First operand 93021 states and 151205 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:39,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:39,766 INFO L93 Difference]: Finished difference Result 368976 states and 601240 transitions. [2021-12-06 17:26:39,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:26:39,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-06 17:26:39,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:40,688 INFO L225 Difference]: With dead ends: 368976 [2021-12-06 17:26:40,688 INFO L226 Difference]: Without dead ends: 278096 [2021-12-06 17:26:40,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:26:40,926 INFO L933 BasicCegarLoop]: 4884 mSDtfsCounter, 5905 mSDsluCounter, 17756 mSDsCounter, 0 mSdLazyCounter, 2896 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5937 SdHoareTripleChecker+Valid, 22640 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:40,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5937 Valid, 22640 Invalid, 2989 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 2896 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 17:26:41,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278096 states. [2021-12-06 17:26:55,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278096 to 183326. [2021-12-06 17:26:56,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183326 states, 169724 states have (on average 1.5555725766538615) internal successors, (264018), 170238 states have internal predecessors, (264018), 10010 states have call successors, (10010), 3078 states have call predecessors, (10010), 3590 states have return successors, (30205), 10521 states have call predecessors, (30205), 10010 states have call successors, (30205) [2021-12-06 17:26:56,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183326 states to 183326 states and 304233 transitions. [2021-12-06 17:26:56,870 INFO L78 Accepts]: Start accepts. Automaton has 183326 states and 304233 transitions. Word has length 178 [2021-12-06 17:26:56,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:56,871 INFO L470 AbstractCegarLoop]: Abstraction has 183326 states and 304233 transitions. [2021-12-06 17:26:56,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:56,871 INFO L276 IsEmpty]: Start isEmpty. Operand 183326 states and 304233 transitions. [2021-12-06 17:26:56,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:26:56,936 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:56,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:56,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 17:26:56,937 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:26:56,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:56,937 INFO L85 PathProgramCache]: Analyzing trace with hash -725960257, now seen corresponding path program 1 times [2021-12-06 17:26:56,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:26:56,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678846576] [2021-12-06 17:26:56,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:56,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:26:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:56,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:26:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:56,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:26:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:57,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:26:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:57,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:26:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:57,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:26:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:26:57,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:26:57,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678846576] [2021-12-06 17:26:57,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678846576] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:26:57,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:26:57,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:26:57,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860944477] [2021-12-06 17:26:57,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:26:57,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:26:57,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:26:57,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:26:57,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:26:57,047 INFO L87 Difference]: Start difference. First operand 183326 states and 304233 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:27:59,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:27:59,923 INFO L93 Difference]: Finished difference Result 725391 states and 1208094 transitions. [2021-12-06 17:27:59,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:27:59,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-06 17:27:59,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:28:01,967 INFO L225 Difference]: With dead ends: 725391 [2021-12-06 17:28:01,967 INFO L226 Difference]: Without dead ends: 544206 [2021-12-06 17:28:02,692 INFO L932 BasicCegarLoop]: 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 [2021-12-06 17:28:02,692 INFO L933 BasicCegarLoop]: 4879 mSDtfsCounter, 5865 mSDsluCounter, 17756 mSDsCounter, 0 mSdLazyCounter, 2888 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5897 SdHoareTripleChecker+Valid, 22635 SdHoareTripleChecker+Invalid, 2981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:28:02,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5897 Valid, 22635 Invalid, 2981 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 2888 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-06 17:28:03,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544206 states. [2021-12-06 17:28:34,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544206 to 363679. [2021-12-06 17:28:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363679 states, 337021 states have (on average 1.5551434480343955) internal successors, (524116), 338047 states have internal predecessors, (524116), 19482 states have call successors, (19482), 6150 states have call predecessors, (19482), 7174 states have return successors, (79555), 20505 states have call predecessors, (79555), 19482 states have call successors, (79555) [2021-12-06 17:28:36,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363679 states to 363679 states and 623153 transitions. [2021-12-06 17:28:36,095 INFO L78 Accepts]: Start accepts. Automaton has 363679 states and 623153 transitions. Word has length 178 [2021-12-06 17:28:36,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:28:36,095 INFO L470 AbstractCegarLoop]: Abstraction has 363679 states and 623153 transitions. [2021-12-06 17:28:36,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:28:36,096 INFO L276 IsEmpty]: Start isEmpty. Operand 363679 states and 623153 transitions. [2021-12-06 17:28:36,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:28:36,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:28:36,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:28:36,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 17:28:36,211 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:28:36,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:28:36,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1781137217, now seen corresponding path program 1 times [2021-12-06 17:28:36,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:28:36,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128629272] [2021-12-06 17:28:36,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:28:36,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:28:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:28:36,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:28:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:28:36,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:28:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:28:36,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:28:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:28:36,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:28:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:28:36,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:28:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:28:36,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:28:36,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:28:36,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128629272] [2021-12-06 17:28:36,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128629272] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:28:36,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:28:36,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:28:36,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101828023] [2021-12-06 17:28:36,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:28:36,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:28:36,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:28:36,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:28:36,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:28:36,319 INFO L87 Difference]: Start difference. First operand 363679 states and 623153 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:30:44,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:30:44,447 INFO L93 Difference]: Finished difference Result 1428750 states and 2459188 transitions. [2021-12-06 17:30:44,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:30:44,447 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-06 17:30:44,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:30:49,094 INFO L225 Difference]: With dead ends: 1428750 [2021-12-06 17:30:49,095 INFO L226 Difference]: Without dead ends: 1067212 [2021-12-06 17:30:50,993 INFO L932 BasicCegarLoop]: 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 [2021-12-06 17:30:50,994 INFO L933 BasicCegarLoop]: 5014 mSDtfsCounter, 5578 mSDsluCounter, 17756 mSDsCounter, 0 mSdLazyCounter, 3324 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5596 SdHoareTripleChecker+Valid, 22770 SdHoareTripleChecker+Invalid, 3414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:30:50,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5596 Valid, 22770 Invalid, 3414 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 3324 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-06 17:30:51,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067212 states. [2021-12-06 17:31:57,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067212 to 723872. [2021-12-06 17:31:58,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723872 states, 671614 states have (on average 1.5556882375888532) internal successors, (1044822), 673664 states have internal predecessors, (1044822), 37914 states have call successors, (37914), 12294 states have call predecessors, (37914), 14342 states have return successors, (217109), 39961 states have call predecessors, (217109), 37914 states have call successors, (217109) [2021-12-06 17:32:02,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723872 states to 723872 states and 1299845 transitions. [2021-12-06 17:32:02,697 INFO L78 Accepts]: Start accepts. Automaton has 723872 states and 1299845 transitions. Word has length 178 [2021-12-06 17:32:02,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:32:02,698 INFO L470 AbstractCegarLoop]: Abstraction has 723872 states and 1299845 transitions. [2021-12-06 17:32:02,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:32:02,698 INFO L276 IsEmpty]: Start isEmpty. Operand 723872 states and 1299845 transitions. [2021-12-06 17:32:02,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:32:02,916 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:32:02,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:32:02,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 17:32:02,917 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:32:02,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:32:02,917 INFO L85 PathProgramCache]: Analyzing trace with hash -354745985, now seen corresponding path program 1 times [2021-12-06 17:32:02,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:32:02,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26280961] [2021-12-06 17:32:02,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:32:02,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:32:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:32:02,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:32:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:32:02,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:32:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:32:03,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:32:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:32:03,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:32:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:32:03,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:32:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:32:03,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:32:03,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:32:03,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26280961] [2021-12-06 17:32:03,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26280961] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:32:03,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:32:03,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:32:03,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636047656] [2021-12-06 17:32:03,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:32:03,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:32:03,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:32:03,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:32:03,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:32:03,020 INFO L87 Difference]: Start difference. First operand 723872 states and 1299845 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:33:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:33:49,579 INFO L93 Difference]: Finished difference Result 1667048 states and 3124542 transitions. [2021-12-06 17:33:49,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:33:49,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-06 17:33:49,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:33:54,544 INFO L225 Difference]: With dead ends: 1667048 [2021-12-06 17:33:54,545 INFO L226 Difference]: Without dead ends: 945317 [2021-12-06 17:33:57,379 INFO L932 BasicCegarLoop]: 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 [2021-12-06 17:33:57,380 INFO L933 BasicCegarLoop]: 4534 mSDtfsCounter, 5106 mSDsluCounter, 16758 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5126 SdHoareTripleChecker+Valid, 21292 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:33:57,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5126 Valid, 21292 Invalid, 1436 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [94 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 17:33:57,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945317 states. [2021-12-06 17:35:07,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945317 to 723872. [2021-12-06 17:35:08,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723872 states, 671614 states have (on average 1.5526373780177305) internal successors, (1042773), 673664 states have internal predecessors, (1042773), 37914 states have call successors, (37914), 12294 states have call predecessors, (37914), 14342 states have return successors, (217109), 39961 states have call predecessors, (217109), 37914 states have call successors, (217109) [2021-12-06 17:35:12,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723872 states to 723872 states and 1297796 transitions. [2021-12-06 17:35:12,619 INFO L78 Accepts]: Start accepts. Automaton has 723872 states and 1297796 transitions. Word has length 178 [2021-12-06 17:35:12,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:35:12,619 INFO L470 AbstractCegarLoop]: Abstraction has 723872 states and 1297796 transitions. [2021-12-06 17:35:12,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:35:12,620 INFO L276 IsEmpty]: Start isEmpty. Operand 723872 states and 1297796 transitions. [2021-12-06 17:35:12,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:35:12,832 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:35:12,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:35:12,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 17:35:12,832 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:35:12,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:35:12,833 INFO L85 PathProgramCache]: Analyzing trace with hash -285098111, now seen corresponding path program 1 times [2021-12-06 17:35:12,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:35:12,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900442033] [2021-12-06 17:35:12,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:35:12,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:35:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:12,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:35:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:12,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 17:35:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:12,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 17:35:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:12,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 17:35:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:12,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 17:35:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:35:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:35:12,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:35:12,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900442033] [2021-12-06 17:35:12,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900442033] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:35:12,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:35:12,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:35:12,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430963961] [2021-12-06 17:35:12,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:35:12,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:35:12,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:35:12,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:35:12,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:35:12,939 INFO L87 Difference]: Start difference. First operand 723872 states and 1297796 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)