./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y --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 54f1be55645106b43145d214f59b6f833268ce7c7f84e399c536bf03a2c9679b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:36:26,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:36:26,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:36:26,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:36:26,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:36:26,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:36:26,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:36:26,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:36:26,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:36:26,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:36:26,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:36:26,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:36:26,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:36:26,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:36:26,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:36:26,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:36:26,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:36:26,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:36:26,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:36:26,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:36:26,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:36:26,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:36:26,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:36:26,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:36:26,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:36:26,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:36:26,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:36:26,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:36:26,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:36:26,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:36:26,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:36:26,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:36:26,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:36:26,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:36:26,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:36:26,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:36:26,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:36:26,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:36:26,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:36:26,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:36:26,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:36:26,343 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 17:36:26,396 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:36:26,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:36:26,397 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:36:26,397 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:36:26,398 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:36:26,398 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:36:26,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:36:26,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:36:26,399 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:36:26,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:36:26,399 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:36:26,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:36:26,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:36:26,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:36:26,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:36:26,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:36:26,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:36:26,401 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:36:26,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:36:26,401 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:36:26,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:36:26,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:36:26,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:36:26,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:36:26,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:36:26,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:36:26,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:36:26,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:36:26,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:36:26,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:36:26,403 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:36:26,404 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:36:26,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:36:26,404 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:36:26,405 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_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54f1be55645106b43145d214f59b6f833268ce7c7f84e399c536bf03a2c9679b [2021-11-13 17:36:26,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:36:26,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:36:26,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:36:26,714 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:36:26,715 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:36:26,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.c [2021-11-13 17:36:26,803 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/data/3db707add/97fd0995891942abaff29147e0110781/FLAG5679fd7e9 [2021-11-13 17:36:27,808 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:36:27,809 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.c [2021-11-13 17:36:27,875 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/data/3db707add/97fd0995891942abaff29147e0110781/FLAG5679fd7e9 [2021-11-13 17:36:28,169 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/data/3db707add/97fd0995891942abaff29147e0110781 [2021-11-13 17:36:28,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:36:28,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:36:28,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:36:28,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:36:28,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:36:28,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:36:28" (1/1) ... [2021-11-13 17:36:28,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bbf2196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:28, skipping insertion in model container [2021-11-13 17:36:28,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:36:28" (1/1) ... [2021-11-13 17:36:28,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:36:28,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:36:30,821 WARN L228 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_1faa8973-5ae8-4ce2-9f30-ce40870b47db/sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.c[381679,381692] [2021-11-13 17:36:30,849 WARN L228 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_1faa8973-5ae8-4ce2-9f30-ce40870b47db/sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.c[383339,383352] [2021-11-13 17:36:31,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:36:31,137 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:36:32,388 WARN L228 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_1faa8973-5ae8-4ce2-9f30-ce40870b47db/sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.c[381679,381692] [2021-11-13 17:36:32,401 WARN L228 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_1faa8973-5ae8-4ce2-9f30-ce40870b47db/sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.c[383339,383352] [2021-11-13 17:36:32,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:36:32,517 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:36:32,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:32 WrapperNode [2021-11-13 17:36:32,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:36:32,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:36:32,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:36:32,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:36:32,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:32" (1/1) ... [2021-11-13 17:36:32,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:32" (1/1) ... [2021-11-13 17:36:32,977 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:36:32,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:36:32,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:36:32,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:36:32,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:32" (1/1) ... [2021-11-13 17:36:32,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:32" (1/1) ... [2021-11-13 17:36:33,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:32" (1/1) ... [2021-11-13 17:36:33,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:32" (1/1) ... [2021-11-13 17:36:33,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:32" (1/1) ... [2021-11-13 17:36:33,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:32" (1/1) ... [2021-11-13 17:36:33,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:32" (1/1) ... [2021-11-13 17:36:33,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:36:33,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:36:33,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:36:33,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:36:33,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:32" (1/1) ... [2021-11-13 17:36:33,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:36:33,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:36:33,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:36:33,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:36:33,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:36:33,770 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-13 17:36:33,770 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-13 17:36:33,770 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-13 17:36:33,770 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-13 17:36:33,770 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-13 17:36:33,770 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-13 17:36:33,771 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-13 17:36:33,771 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-13 17:36:33,771 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-13 17:36:33,771 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-13 17:36:33,771 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-13 17:36:33,771 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-13 17:36:33,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:36:33,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:36:33,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:36:42,387 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:36:42,387 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-13 17:36:42,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:36:42 BoogieIcfgContainer [2021-11-13 17:36:42,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:36:42,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:36:42,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:36:42,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:36:42,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:36:28" (1/3) ... [2021-11-13 17:36:42,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6031f5b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:36:42, skipping insertion in model container [2021-11-13 17:36:42,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:36:32" (2/3) ... [2021-11-13 17:36:42,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6031f5b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:36:42, skipping insertion in model container [2021-11-13 17:36:42,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:36:42" (3/3) ... [2021-11-13 17:36:42,405 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.07.cil-1.c [2021-11-13 17:36:42,412 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:36:42,412 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-13 17:36:42,500 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:36:42,512 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 [2021-11-13 17:36:42,512 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-13 17:36:42,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-13 17:36:42,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-13 17:36:42,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:42,626 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] [2021-11-13 17:36:42,626 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:36:42,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:42,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1176565078, now seen corresponding path program 1 times [2021-11-13 17:36:42,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:36:42,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166034966] [2021-11-13 17:36:42,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:42,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:36:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:43,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:36:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:43,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:36:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:43,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:36:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:43,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:36:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:43,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:36:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:43,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:36:43,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:36:43,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166034966] [2021-11-13 17:36:43,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166034966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:43,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:43,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:36:43,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849468652] [2021-11-13 17:36:43,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:43,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:36:43,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:36:43,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:36:43,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:36:43,297 INFO L87 Difference]: Start difference. First operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:36:44,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:44,752 INFO L93 Difference]: Finished difference Result 4955 states and 9127 transitions. [2021-11-13 17:36:44,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:36:44,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-13 17:36:44,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:44,800 INFO L225 Difference]: With dead ends: 4955 [2021-11-13 17:36:44,801 INFO L226 Difference]: Without dead ends: 2460 [2021-11-13 17:36:44,818 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 [2021-11-13 17:36:44,826 INFO L933 BasicCegarLoop]: 4453 mSDtfsCounter, 653 mSDsluCounter, 12350 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 692.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 16803 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 135.00ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 825.71ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:44,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 16803 Invalid, 493 Unknown, 0 Unchecked, 135.00ms Time], IncrementalHoareTripleChecker [50 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 825.71ms Time] [2021-11-13 17:36:44,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-11-13 17:36:45,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2373. [2021-11-13 17:36:45,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2344 states have (on average 1.83660409556314) internal successors, (4305), 2346 states have internal predecessors, (4305), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-13 17:36:45,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 4347 transitions. [2021-11-13 17:36:45,068 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 4347 transitions. Word has length 123 [2021-11-13 17:36:45,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:45,068 INFO L470 AbstractCegarLoop]: Abstraction has 2373 states and 4347 transitions. [2021-11-13 17:36:45,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:36:45,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 4347 transitions. [2021-11-13 17:36:45,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-13 17:36:45,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:45,081 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] [2021-11-13 17:36:45,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:36:45,083 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:36:45,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:45,087 INFO L85 PathProgramCache]: Analyzing trace with hash 796600300, now seen corresponding path program 1 times [2021-11-13 17:36:45,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:36:45,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026963177] [2021-11-13 17:36:45,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:45,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:36:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:45,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:36:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:45,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:36:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:45,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:36:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:45,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:36:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:45,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:36:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:45,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:36:45,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:36:45,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026963177] [2021-11-13 17:36:45,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026963177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:45,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:45,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:36:45,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250580028] [2021-11-13 17:36:45,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:45,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:36:45,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:36:45,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:36:45,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:36:45,450 INFO L87 Difference]: Start difference. First operand 2373 states and 4347 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:36:46,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:46,890 INFO L93 Difference]: Finished difference Result 2696 states and 4862 transitions. [2021-11-13 17:36:46,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:36:46,893 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-13 17:36:46,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:46,914 INFO L225 Difference]: With dead ends: 2696 [2021-11-13 17:36:46,915 INFO L226 Difference]: Without dead ends: 2459 [2021-11-13 17:36:46,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:36:46,924 INFO L933 BasicCegarLoop]: 4350 mSDtfsCounter, 4599 mSDsluCounter, 12313 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 921.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4614 SdHoareTripleChecker+Valid, 16663 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 100.82ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1079.03ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:46,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4614 Valid, 16663 Invalid, 897 Unknown, 0 Unchecked, 100.82ms Time], IncrementalHoareTripleChecker [56 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 1079.03ms Time] [2021-11-13 17:36:46,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2459 states. [2021-11-13 17:36:47,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2459 to 2373. [2021-11-13 17:36:47,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2344 states have (on average 1.8361774744027304) internal successors, (4304), 2346 states have internal predecessors, (4304), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-13 17:36:47,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 4346 transitions. [2021-11-13 17:36:47,024 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 4346 transitions. Word has length 123 [2021-11-13 17:36:47,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:47,027 INFO L470 AbstractCegarLoop]: Abstraction has 2373 states and 4346 transitions. [2021-11-13 17:36:47,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:36:47,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 4346 transitions. [2021-11-13 17:36:47,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-13 17:36:47,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:47,035 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] [2021-11-13 17:36:47,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:36:47,036 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:36:47,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:47,036 INFO L85 PathProgramCache]: Analyzing trace with hash 915041774, now seen corresponding path program 1 times [2021-11-13 17:36:47,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:36:47,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115488269] [2021-11-13 17:36:47,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:47,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:36:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:36:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:36:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:36:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:36:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:36:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:36:47,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:36:47,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115488269] [2021-11-13 17:36:47,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115488269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:47,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:47,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:36:47,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055557840] [2021-11-13 17:36:47,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:47,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:36:47,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:36:47,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:36:47,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:36:47,295 INFO L87 Difference]: Start difference. First operand 2373 states and 4346 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:36:48,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:48,847 INFO L93 Difference]: Finished difference Result 2711 states and 4889 transitions. [2021-11-13 17:36:48,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:36:48,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-13 17:36:48,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:48,867 INFO L225 Difference]: With dead ends: 2711 [2021-11-13 17:36:48,867 INFO L226 Difference]: Without dead ends: 2474 [2021-11-13 17:36:48,873 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 [2021-11-13 17:36:48,879 INFO L933 BasicCegarLoop]: 4373 mSDtfsCounter, 4653 mSDsluCounter, 16445 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 922.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4668 SdHoareTripleChecker+Valid, 20818 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 81.98ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1136.40ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:48,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4668 Valid, 20818 Invalid, 1037 Unknown, 0 Unchecked, 81.98ms Time], IncrementalHoareTripleChecker [60 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 1136.40ms Time] [2021-11-13 17:36:48,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2021-11-13 17:36:48,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 2373. [2021-11-13 17:36:48,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2344 states have (on average 1.8357508532423208) internal successors, (4303), 2346 states have internal predecessors, (4303), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-13 17:36:48,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 4345 transitions. [2021-11-13 17:36:48,989 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 4345 transitions. Word has length 123 [2021-11-13 17:36:48,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:48,989 INFO L470 AbstractCegarLoop]: Abstraction has 2373 states and 4345 transitions. [2021-11-13 17:36:48,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:36:48,990 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 4345 transitions. [2021-11-13 17:36:48,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-13 17:36:48,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:48,992 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] [2021-11-13 17:36:48,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:36:48,993 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:36:48,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:48,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1990631508, now seen corresponding path program 1 times [2021-11-13 17:36:48,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:36:48,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914631083] [2021-11-13 17:36:48,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:48,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:36:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:49,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:36:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:49,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:36:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:49,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:36:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:49,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:36:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:49,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:36:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:49,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:36:49,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:36:49,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914631083] [2021-11-13 17:36:49,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914631083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:49,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:49,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:36:49,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630533718] [2021-11-13 17:36:49,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:49,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:36:49,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:36:49,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:36:49,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:36:49,200 INFO L87 Difference]: Start difference. First operand 2373 states and 4345 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:36:50,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:50,306 INFO L93 Difference]: Finished difference Result 2694 states and 4856 transitions. [2021-11-13 17:36:50,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:36:50,307 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-13 17:36:50,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:50,324 INFO L225 Difference]: With dead ends: 2694 [2021-11-13 17:36:50,325 INFO L226 Difference]: Without dead ends: 2457 [2021-11-13 17:36:50,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:36:50,334 INFO L933 BasicCegarLoop]: 4340 mSDtfsCounter, 4754 mSDsluCounter, 12356 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 698.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4769 SdHoareTripleChecker+Valid, 16696 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.08ms SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 818.81ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:50,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4769 Valid, 16696 Invalid, 860 Unknown, 0 Unchecked, 46.08ms Time], IncrementalHoareTripleChecker [80 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 818.81ms Time] [2021-11-13 17:36:50,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2021-11-13 17:36:50,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 2373. [2021-11-13 17:36:50,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2344 states have (on average 1.8344709897610922) internal successors, (4300), 2346 states have internal predecessors, (4300), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-13 17:36:50,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 4342 transitions. [2021-11-13 17:36:50,433 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 4342 transitions. Word has length 123 [2021-11-13 17:36:50,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:50,434 INFO L470 AbstractCegarLoop]: Abstraction has 2373 states and 4342 transitions. [2021-11-13 17:36:50,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:36:50,435 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 4342 transitions. [2021-11-13 17:36:50,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-13 17:36:50,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:50,442 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] [2021-11-13 17:36:50,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 17:36:50,442 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:36:50,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:50,443 INFO L85 PathProgramCache]: Analyzing trace with hash 198555184, now seen corresponding path program 1 times [2021-11-13 17:36:50,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:36:50,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501297510] [2021-11-13 17:36:50,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:50,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:36:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:50,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:36:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:50,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:36:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:50,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:36:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:50,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:36:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:50,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:36:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:50,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:36:50,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:36:50,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501297510] [2021-11-13 17:36:50,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501297510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:50,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:50,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:36:50,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768683474] [2021-11-13 17:36:50,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:50,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:36:50,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:36:50,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:36:50,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:36:50,631 INFO L87 Difference]: Start difference. First operand 2373 states and 4342 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 6 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:36:52,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:52,969 INFO L93 Difference]: Finished difference Result 3039 states and 5393 transitions. [2021-11-13 17:36:52,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 17:36:52,970 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 6 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-13 17:36:52,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:52,990 INFO L225 Difference]: With dead ends: 3039 [2021-11-13 17:36:52,990 INFO L226 Difference]: Without dead ends: 2802 [2021-11-13 17:36:52,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:36:52,993 INFO L933 BasicCegarLoop]: 4595 mSDtfsCounter, 5195 mSDsluCounter, 17298 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1408.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5210 SdHoareTripleChecker+Valid, 21893 SdHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 66.31ms SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1653.83ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:52,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5210 Valid, 21893 Invalid, 1889 Unknown, 0 Unchecked, 66.31ms Time], IncrementalHoareTripleChecker [90 Valid, 1799 Invalid, 0 Unknown, 0 Unchecked, 1653.83ms Time] [2021-11-13 17:36:53,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2021-11-13 17:36:53,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 2620. [2021-11-13 17:36:53,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2620 states, 2567 states have (on average 1.8095052590572653) internal successors, (4645), 2570 states have internal predecessors, (4645), 38 states have call successors, (38), 12 states have call predecessors, (38), 13 states have return successors, (41), 39 states have call predecessors, (41), 38 states have call successors, (41) [2021-11-13 17:36:53,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2620 states to 2620 states and 4724 transitions. [2021-11-13 17:36:53,132 INFO L78 Accepts]: Start accepts. Automaton has 2620 states and 4724 transitions. Word has length 123 [2021-11-13 17:36:53,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:53,133 INFO L470 AbstractCegarLoop]: Abstraction has 2620 states and 4724 transitions. [2021-11-13 17:36:53,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 6 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:36:53,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2620 states and 4724 transitions. [2021-11-13 17:36:53,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-13 17:36:53,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:53,136 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] [2021-11-13 17:36:53,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:36:53,137 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:36:53,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:53,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1668153490, now seen corresponding path program 1 times [2021-11-13 17:36:53,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:36:53,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614269680] [2021-11-13 17:36:53,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:53,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:36:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:53,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:36:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:53,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:36:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:53,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:36:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:53,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:36:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:53,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:36:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:53,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:36:53,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:36:53,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614269680] [2021-11-13 17:36:53,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614269680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:53,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:53,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:36:53,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426532293] [2021-11-13 17:36:53,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:53,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:36:53,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:36:53,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:36:53,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:36:53,280 INFO L87 Difference]: Start difference. First operand 2620 states and 4724 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:36:54,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:54,503 INFO L93 Difference]: Finished difference Result 3309 states and 5823 transitions. [2021-11-13 17:36:54,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:36:54,504 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-13 17:36:54,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:54,523 INFO L225 Difference]: With dead ends: 3309 [2021-11-13 17:36:54,524 INFO L226 Difference]: Without dead ends: 2825 [2021-11-13 17:36:54,527 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 [2021-11-13 17:36:54,528 INFO L933 BasicCegarLoop]: 4359 mSDtfsCounter, 4751 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 762.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4766 SdHoareTripleChecker+Valid, 16714 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.53ms SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 912.06ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:54,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4766 Valid, 16714 Invalid, 911 Unknown, 0 Unchecked, 40.53ms Time], IncrementalHoareTripleChecker [85 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 912.06ms Time] [2021-11-13 17:36:54,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2021-11-13 17:36:54,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 2620. [2021-11-13 17:36:54,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2620 states, 2567 states have (on average 1.8087261394624075) internal successors, (4643), 2570 states have internal predecessors, (4643), 38 states have call successors, (38), 12 states have call predecessors, (38), 13 states have return successors, (41), 39 states have call predecessors, (41), 38 states have call successors, (41) [2021-11-13 17:36:54,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2620 states to 2620 states and 4722 transitions. [2021-11-13 17:36:54,664 INFO L78 Accepts]: Start accepts. Automaton has 2620 states and 4722 transitions. Word has length 123 [2021-11-13 17:36:54,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:54,664 INFO L470 AbstractCegarLoop]: Abstraction has 2620 states and 4722 transitions. [2021-11-13 17:36:54,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:36:54,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2620 states and 4722 transitions. [2021-11-13 17:36:54,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-13 17:36:54,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:54,667 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] [2021-11-13 17:36:54,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 17:36:54,668 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:36:54,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:54,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1319671408, now seen corresponding path program 1 times [2021-11-13 17:36:54,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:36:54,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753840846] [2021-11-13 17:36:54,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:54,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:36:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:54,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:36:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:54,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:36:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:54,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:36:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:54,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:36:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:54,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:36:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:54,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:36:54,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:36:54,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753840846] [2021-11-13 17:36:54,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753840846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:54,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:54,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:36:54,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872036958] [2021-11-13 17:36:54,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:54,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:36:54,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:36:54,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:36:54,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:36:54,811 INFO L87 Difference]: Start difference. First operand 2620 states and 4722 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:36:55,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:55,948 INFO L93 Difference]: Finished difference Result 3305 states and 5810 transitions. [2021-11-13 17:36:55,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:36:55,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-13 17:36:55,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:55,968 INFO L225 Difference]: With dead ends: 3305 [2021-11-13 17:36:55,969 INFO L226 Difference]: Without dead ends: 2821 [2021-11-13 17:36:55,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 17:36:55,973 INFO L933 BasicCegarLoop]: 4353 mSDtfsCounter, 4752 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 710.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4767 SdHoareTripleChecker+Valid, 16708 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.79ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 830.59ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:55,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4767 Valid, 16708 Invalid, 901 Unknown, 0 Unchecked, 39.79ms Time], IncrementalHoareTripleChecker [88 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 830.59ms Time] [2021-11-13 17:36:55,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2821 states. [2021-11-13 17:36:56,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2821 to 2620. [2021-11-13 17:36:56,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2620 states, 2567 states have (on average 1.8079470198675496) internal successors, (4641), 2570 states have internal predecessors, (4641), 38 states have call successors, (38), 12 states have call predecessors, (38), 13 states have return successors, (41), 39 states have call predecessors, (41), 38 states have call successors, (41) [2021-11-13 17:36:56,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2620 states to 2620 states and 4720 transitions. [2021-11-13 17:36:56,109 INFO L78 Accepts]: Start accepts. Automaton has 2620 states and 4720 transitions. Word has length 123 [2021-11-13 17:36:56,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:56,109 INFO L470 AbstractCegarLoop]: Abstraction has 2620 states and 4720 transitions. [2021-11-13 17:36:56,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:36:56,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2620 states and 4720 transitions. [2021-11-13 17:36:56,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-13 17:36:56,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:56,113 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] [2021-11-13 17:36:56,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 17:36:56,114 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:36:56,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:56,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1077799122, now seen corresponding path program 1 times [2021-11-13 17:36:56,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:36:56,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959410687] [2021-11-13 17:36:56,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:56,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:36:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:56,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:36:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:56,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:36:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:56,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:36:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:56,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:36:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:56,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:36:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:56,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:36:56,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:36:56,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959410687] [2021-11-13 17:36:56,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959410687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:56,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:56,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:36:56,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859577536] [2021-11-13 17:36:56,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:56,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:36:56,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:36:56,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:36:56,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:36:56,258 INFO L87 Difference]: Start difference. First operand 2620 states and 4720 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:36:57,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:57,387 INFO L93 Difference]: Finished difference Result 3299 states and 5793 transitions. [2021-11-13 17:36:57,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:36:57,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-13 17:36:57,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:57,406 INFO L225 Difference]: With dead ends: 3299 [2021-11-13 17:36:57,406 INFO L226 Difference]: Without dead ends: 2815 [2021-11-13 17:36:57,409 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 [2021-11-13 17:36:57,410 INFO L933 BasicCegarLoop]: 4347 mSDtfsCounter, 4748 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 674.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4763 SdHoareTripleChecker+Valid, 16702 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.28ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 786.09ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:57,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4763 Valid, 16702 Invalid, 887 Unknown, 0 Unchecked, 34.28ms Time], IncrementalHoareTripleChecker [88 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 786.09ms Time] [2021-11-13 17:36:57,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2021-11-13 17:36:57,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2620. [2021-11-13 17:36:57,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2620 states, 2567 states have (on average 1.807167900272692) internal successors, (4639), 2570 states have internal predecessors, (4639), 38 states have call successors, (38), 12 states have call predecessors, (38), 13 states have return successors, (41), 39 states have call predecessors, (41), 38 states have call successors, (41) [2021-11-13 17:36:57,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2620 states to 2620 states and 4718 transitions. [2021-11-13 17:36:57,526 INFO L78 Accepts]: Start accepts. Automaton has 2620 states and 4718 transitions. Word has length 123 [2021-11-13 17:36:57,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:57,527 INFO L470 AbstractCegarLoop]: Abstraction has 2620 states and 4718 transitions. [2021-11-13 17:36:57,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:36:57,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2620 states and 4718 transitions. [2021-11-13 17:36:57,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-13 17:36:57,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:57,530 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] [2021-11-13 17:36:57,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 17:36:57,530 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:36:57,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:57,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1310764908, now seen corresponding path program 1 times [2021-11-13 17:36:57,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:36:57,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865522910] [2021-11-13 17:36:57,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:57,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:36:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:57,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:36:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:57,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:36:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:57,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:36:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:57,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:36:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:57,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:36:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:57,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:36:57,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:36:57,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865522910] [2021-11-13 17:36:57,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865522910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:57,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:57,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:36:57,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790002538] [2021-11-13 17:36:57,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:57,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:36:57,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:36:57,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:36:57,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:36:57,671 INFO L87 Difference]: Start difference. First operand 2620 states and 4718 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:36:58,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:58,713 INFO L93 Difference]: Finished difference Result 3296 states and 5781 transitions. [2021-11-13 17:36:58,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:36:58,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-13 17:36:58,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:58,753 INFO L225 Difference]: With dead ends: 3296 [2021-11-13 17:36:58,753 INFO L226 Difference]: Without dead ends: 2812 [2021-11-13 17:36:58,756 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 [2021-11-13 17:36:58,758 INFO L933 BasicCegarLoop]: 4343 mSDtfsCounter, 4744 mSDsluCounter, 12353 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 671.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4759 SdHoareTripleChecker+Valid, 16696 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.62ms SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 782.96ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:58,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4759 Valid, 16696 Invalid, 881 Unknown, 0 Unchecked, 35.62ms Time], IncrementalHoareTripleChecker [90 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 782.96ms Time] [2021-11-13 17:36:58,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2812 states. [2021-11-13 17:36:58,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2812 to 2620. [2021-11-13 17:36:58,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2620 states, 2567 states have (on average 1.806388780677834) internal successors, (4637), 2570 states have internal predecessors, (4637), 38 states have call successors, (38), 12 states have call predecessors, (38), 13 states have return successors, (41), 39 states have call predecessors, (41), 38 states have call successors, (41) [2021-11-13 17:36:58,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2620 states to 2620 states and 4716 transitions. [2021-11-13 17:36:58,856 INFO L78 Accepts]: Start accepts. Automaton has 2620 states and 4716 transitions. Word has length 123 [2021-11-13 17:36:58,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:58,857 INFO L470 AbstractCegarLoop]: Abstraction has 2620 states and 4716 transitions. [2021-11-13 17:36:58,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:36:58,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2620 states and 4716 transitions. [2021-11-13 17:36:58,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-13 17:36:58,859 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:58,859 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] [2021-11-13 17:36:58,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 17:36:58,859 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:36:58,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:58,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1383131282, now seen corresponding path program 1 times [2021-11-13 17:36:58,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:36:58,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903869753] [2021-11-13 17:36:58,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:58,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:36:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:58,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:36:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:58,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:36:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:58,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:36:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:58,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:36:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:58,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:36:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:58,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:36:58,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:36:58,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903869753] [2021-11-13 17:36:58,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903869753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:58,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:58,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:36:58,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926618448] [2021-11-13 17:36:58,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:58,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:36:58,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:36:58,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:36:58,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:36:58,985 INFO L87 Difference]: Start difference. First operand 2620 states and 4716 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:36:59,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:59,927 INFO L93 Difference]: Finished difference Result 3293 states and 5769 transitions. [2021-11-13 17:36:59,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:36:59,927 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-13 17:36:59,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:59,936 INFO L225 Difference]: With dead ends: 3293 [2021-11-13 17:36:59,937 INFO L226 Difference]: Without dead ends: 2809 [2021-11-13 17:36:59,940 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 [2021-11-13 17:36:59,940 INFO L933 BasicCegarLoop]: 4339 mSDtfsCounter, 4742 mSDsluCounter, 12353 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 581.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4757 SdHoareTripleChecker+Valid, 16692 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.57ms SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 713.84ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:59,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4757 Valid, 16692 Invalid, 871 Unknown, 0 Unchecked, 26.57ms Time], IncrementalHoareTripleChecker [90 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 713.84ms Time] [2021-11-13 17:36:59,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2809 states. [2021-11-13 17:37:00,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2809 to 2620. [2021-11-13 17:37:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2620 states, 2567 states have (on average 1.8056096610829762) internal successors, (4635), 2570 states have internal predecessors, (4635), 38 states have call successors, (38), 12 states have call predecessors, (38), 13 states have return successors, (41), 39 states have call predecessors, (41), 38 states have call successors, (41) [2021-11-13 17:37:00,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2620 states to 2620 states and 4714 transitions. [2021-11-13 17:37:00,054 INFO L78 Accepts]: Start accepts. Automaton has 2620 states and 4714 transitions. Word has length 123 [2021-11-13 17:37:00,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:00,055 INFO L470 AbstractCegarLoop]: Abstraction has 2620 states and 4714 transitions. [2021-11-13 17:37:00,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:37:00,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2620 states and 4714 transitions. [2021-11-13 17:37:00,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-13 17:37:00,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:00,058 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] [2021-11-13 17:37:00,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 17:37:00,058 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:00,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:00,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1855104812, now seen corresponding path program 1 times [2021-11-13 17:37:00,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:00,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757035098] [2021-11-13 17:37:00,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:00,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:00,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:37:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:00,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:37:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:00,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:37:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:00,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:37:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:00,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:37:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:00,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:37:00,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:00,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757035098] [2021-11-13 17:37:00,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757035098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:00,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:00,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:37:00,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75649042] [2021-11-13 17:37:00,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:00,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:37:00,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:00,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:37:00,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:37:00,197 INFO L87 Difference]: Start difference. First operand 2620 states and 4714 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 6 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:37:02,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:02,372 INFO L93 Difference]: Finished difference Result 4115 states and 7036 transitions. [2021-11-13 17:37:02,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 17:37:02,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 6 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-13 17:37:02,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:02,385 INFO L225 Difference]: With dead ends: 4115 [2021-11-13 17:37:02,385 INFO L226 Difference]: Without dead ends: 3631 [2021-11-13 17:37:02,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-11-13 17:37:02,390 INFO L933 BasicCegarLoop]: 4550 mSDtfsCounter, 5424 mSDsluCounter, 17283 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1335.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5448 SdHoareTripleChecker+Valid, 21833 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.17ms SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1573.97ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:02,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5448 Valid, 21833 Invalid, 1765 Unknown, 0 Unchecked, 50.17ms Time], IncrementalHoareTripleChecker [102 Valid, 1663 Invalid, 0 Unknown, 0 Unchecked, 1573.97ms Time] [2021-11-13 17:37:02,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3631 states. [2021-11-13 17:37:02,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3631 to 3115. [2021-11-13 17:37:02,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3115 states, 3014 states have (on average 1.7644326476443264) internal successors, (5318), 3021 states have internal predecessors, (5318), 70 states have call successors, (70), 24 states have call predecessors, (70), 29 states have return successors, (85), 73 states have call predecessors, (85), 70 states have call successors, (85) [2021-11-13 17:37:02,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3115 states to 3115 states and 5473 transitions. [2021-11-13 17:37:02,547 INFO L78 Accepts]: Start accepts. Automaton has 3115 states and 5473 transitions. Word has length 123 [2021-11-13 17:37:02,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:02,548 INFO L470 AbstractCegarLoop]: Abstraction has 3115 states and 5473 transitions. [2021-11-13 17:37:02,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 6 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:37:02,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3115 states and 5473 transitions. [2021-11-13 17:37:02,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-13 17:37:02,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:02,557 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] [2021-11-13 17:37:02,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 17:37:02,558 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:02,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:02,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1088477266, now seen corresponding path program 1 times [2021-11-13 17:37:02,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:02,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059214805] [2021-11-13 17:37:02,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:02,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:37:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:37:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:37:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:37:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:37:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:37:02,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:02,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059214805] [2021-11-13 17:37:02,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059214805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:02,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:02,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:37:02,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909329401] [2021-11-13 17:37:02,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:02,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:37:02,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:02,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:37:02,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:37:02,710 INFO L87 Difference]: Start difference. First operand 3115 states and 5473 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 6 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:37:05,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:05,130 INFO L93 Difference]: Finished difference Result 6081 states and 10099 transitions. [2021-11-13 17:37:05,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 17:37:05,131 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 6 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-13 17:37:05,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:05,147 INFO L225 Difference]: With dead ends: 6081 [2021-11-13 17:37:05,148 INFO L226 Difference]: Without dead ends: 5102 [2021-11-13 17:37:05,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-11-13 17:37:05,155 INFO L933 BasicCegarLoop]: 4546 mSDtfsCounter, 5128 mSDsluCounter, 21482 mSDsCounter, 0 mSdLazyCounter, 1832 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1476.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5152 SdHoareTripleChecker+Valid, 26028 SdHoareTripleChecker+Invalid, 1911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 60.15ms SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1722.44ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:05,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5152 Valid, 26028 Invalid, 1911 Unknown, 0 Unchecked, 60.15ms Time], IncrementalHoareTripleChecker [79 Valid, 1832 Invalid, 0 Unknown, 0 Unchecked, 1722.44ms Time] [2021-11-13 17:37:05,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2021-11-13 17:37:05,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 4132. [2021-11-13 17:37:05,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4132 states, 3931 states have (on average 1.711015008903587) internal successors, (6726), 3952 states have internal predecessors, (6726), 132 states have call successors, (132), 48 states have call predecessors, (132), 67 states have return successors, (195), 139 states have call predecessors, (195), 132 states have call successors, (195) [2021-11-13 17:37:05,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4132 states to 4132 states and 7053 transitions. [2021-11-13 17:37:05,376 INFO L78 Accepts]: Start accepts. Automaton has 4132 states and 7053 transitions. Word has length 123 [2021-11-13 17:37:05,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:05,376 INFO L470 AbstractCegarLoop]: Abstraction has 4132 states and 7053 transitions. [2021-11-13 17:37:05,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 6 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:37:05,377 INFO L276 IsEmpty]: Start isEmpty. Operand 4132 states and 7053 transitions. [2021-11-13 17:37:05,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-13 17:37:05,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:05,380 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] [2021-11-13 17:37:05,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 17:37:05,381 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:05,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:05,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1587515116, now seen corresponding path program 1 times [2021-11-13 17:37:05,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:05,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563061720] [2021-11-13 17:37:05,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:05,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:05,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:37:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:05,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:37:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:05,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:37:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:05,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:37:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:05,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:37:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:05,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:37:05,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:05,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563061720] [2021-11-13 17:37:05,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563061720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:05,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:05,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:37:05,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208949932] [2021-11-13 17:37:05,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:05,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:37:05,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:05,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:37:05,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:37:05,498 INFO L87 Difference]: Start difference. First operand 4132 states and 7053 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:37:06,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:06,920 INFO L93 Difference]: Finished difference Result 6923 states and 11445 transitions. [2021-11-13 17:37:06,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:37:06,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-13 17:37:06,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:06,937 INFO L225 Difference]: With dead ends: 6923 [2021-11-13 17:37:06,937 INFO L226 Difference]: Without dead ends: 4927 [2021-11-13 17:37:06,945 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 [2021-11-13 17:37:06,946 INFO L933 BasicCegarLoop]: 4329 mSDtfsCounter, 4637 mSDsluCounter, 16440 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 862.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4652 SdHoareTripleChecker+Valid, 20769 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.39ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 992.41ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:06,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4652 Valid, 20769 Invalid, 925 Unknown, 0 Unchecked, 55.39ms Time], IncrementalHoareTripleChecker [69 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 992.41ms Time] [2021-11-13 17:37:06,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4927 states. [2021-11-13 17:37:07,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4927 to 4132. [2021-11-13 17:37:07,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4132 states, 3931 states have (on average 1.7089799033324853) internal successors, (6718), 3952 states have internal predecessors, (6718), 132 states have call successors, (132), 48 states have call predecessors, (132), 67 states have return successors, (195), 139 states have call predecessors, (195), 132 states have call successors, (195) [2021-11-13 17:37:07,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4132 states to 4132 states and 7045 transitions. [2021-11-13 17:37:07,177 INFO L78 Accepts]: Start accepts. Automaton has 4132 states and 7045 transitions. Word has length 123 [2021-11-13 17:37:07,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:07,178 INFO L470 AbstractCegarLoop]: Abstraction has 4132 states and 7045 transitions. [2021-11-13 17:37:07,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:37:07,179 INFO L276 IsEmpty]: Start isEmpty. Operand 4132 states and 7045 transitions. [2021-11-13 17:37:07,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-13 17:37:07,182 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:07,182 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] [2021-11-13 17:37:07,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 17:37:07,182 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:07,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:07,183 INFO L85 PathProgramCache]: Analyzing trace with hash 704006126, now seen corresponding path program 1 times [2021-11-13 17:37:07,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:07,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477200681] [2021-11-13 17:37:07,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:07,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:07,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:37:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:07,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:37:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:07,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:37:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:07,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:37:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:07,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:37:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:07,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:37:07,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:07,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477200681] [2021-11-13 17:37:07,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477200681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:07,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:07,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:37:07,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709686179] [2021-11-13 17:37:07,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:07,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:37:07,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:07,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:37:07,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:37:07,308 INFO L87 Difference]: Start difference. First operand 4132 states and 7045 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:37:08,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:08,247 INFO L93 Difference]: Finished difference Result 6896 states and 11367 transitions. [2021-11-13 17:37:08,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:37:08,247 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-13 17:37:08,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:08,263 INFO L225 Difference]: With dead ends: 6896 [2021-11-13 17:37:08,263 INFO L226 Difference]: Without dead ends: 4900 [2021-11-13 17:37:08,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 17:37:08,272 INFO L933 BasicCegarLoop]: 4323 mSDtfsCounter, 4743 mSDsluCounter, 12353 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 513.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4758 SdHoareTripleChecker+Valid, 16676 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.98ms SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 614.13ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:08,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4758 Valid, 16676 Invalid, 841 Unknown, 0 Unchecked, 24.98ms Time], IncrementalHoareTripleChecker [93 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 614.13ms Time] [2021-11-13 17:37:08,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4900 states. [2021-11-13 17:37:08,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4900 to 4132. [2021-11-13 17:37:08,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4132 states, 3931 states have (on average 1.7069447977613839) internal successors, (6710), 3952 states have internal predecessors, (6710), 132 states have call successors, (132), 48 states have call predecessors, (132), 67 states have return successors, (195), 139 states have call predecessors, (195), 132 states have call successors, (195) [2021-11-13 17:37:08,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4132 states to 4132 states and 7037 transitions. [2021-11-13 17:37:08,507 INFO L78 Accepts]: Start accepts. Automaton has 4132 states and 7037 transitions. Word has length 123 [2021-11-13 17:37:08,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:08,507 INFO L470 AbstractCegarLoop]: Abstraction has 4132 states and 7037 transitions. [2021-11-13 17:37:08,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:37:08,508 INFO L276 IsEmpty]: Start isEmpty. Operand 4132 states and 7037 transitions. [2021-11-13 17:37:08,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-13 17:37:08,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:08,512 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] [2021-11-13 17:37:08,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 17:37:08,513 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:08,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:08,513 INFO L85 PathProgramCache]: Analyzing trace with hash 675505836, now seen corresponding path program 1 times [2021-11-13 17:37:08,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:08,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576705481] [2021-11-13 17:37:08,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:08,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:37:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:37:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:37:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:37:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:37:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:37:08,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:08,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576705481] [2021-11-13 17:37:08,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576705481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:08,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:08,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:37:08,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141511075] [2021-11-13 17:37:08,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:08,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:37:08,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:08,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:37:08,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:37:08,650 INFO L87 Difference]: Start difference. First operand 4132 states and 7037 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:37:10,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:10,153 INFO L93 Difference]: Finished difference Result 6842 states and 11235 transitions. [2021-11-13 17:37:10,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:37:10,153 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-13 17:37:10,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:10,171 INFO L225 Difference]: With dead ends: 6842 [2021-11-13 17:37:10,172 INFO L226 Difference]: Without dead ends: 4846 [2021-11-13 17:37:10,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 17:37:10,183 INFO L933 BasicCegarLoop]: 4318 mSDtfsCounter, 4634 mSDsluCounter, 16440 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 771.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4649 SdHoareTripleChecker+Valid, 20758 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.23ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 889.26ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:10,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4649 Valid, 20758 Invalid, 890 Unknown, 0 Unchecked, 52.23ms Time], IncrementalHoareTripleChecker [70 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 889.26ms Time] [2021-11-13 17:37:10,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4846 states. [2021-11-13 17:37:10,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4846 to 4132. [2021-11-13 17:37:10,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4132 states, 3931 states have (on average 1.7049096921902824) internal successors, (6702), 3952 states have internal predecessors, (6702), 132 states have call successors, (132), 48 states have call predecessors, (132), 67 states have return successors, (195), 139 states have call predecessors, (195), 132 states have call successors, (195) [2021-11-13 17:37:10,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4132 states to 4132 states and 7029 transitions. [2021-11-13 17:37:10,472 INFO L78 Accepts]: Start accepts. Automaton has 4132 states and 7029 transitions. Word has length 123 [2021-11-13 17:37:10,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:10,472 INFO L470 AbstractCegarLoop]: Abstraction has 4132 states and 7029 transitions. [2021-11-13 17:37:10,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:37:10,473 INFO L276 IsEmpty]: Start isEmpty. Operand 4132 states and 7029 transitions. [2021-11-13 17:37:10,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-13 17:37:10,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:10,477 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] [2021-11-13 17:37:10,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 17:37:10,477 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:10,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:10,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1742398230, now seen corresponding path program 1 times [2021-11-13 17:37:10,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:10,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661720881] [2021-11-13 17:37:10,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:10,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:37:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:37:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:37:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:37:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:37:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:37:10,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:10,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661720881] [2021-11-13 17:37:10,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661720881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:10,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:10,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:37:10,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5698993] [2021-11-13 17:37:10,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:10,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:37:10,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:10,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:37:10,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:37:10,602 INFO L87 Difference]: Start difference. First operand 4132 states and 7029 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:37:12,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:12,693 INFO L93 Difference]: Finished difference Result 9407 states and 15185 transitions. [2021-11-13 17:37:12,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 17:37:12,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-13 17:37:12,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:12,719 INFO L225 Difference]: With dead ends: 9407 [2021-11-13 17:37:12,719 INFO L226 Difference]: Without dead ends: 7412 [2021-11-13 17:37:12,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-13 17:37:12,732 INFO L933 BasicCegarLoop]: 4717 mSDtfsCounter, 5147 mSDsluCounter, 12692 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1233.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5181 SdHoareTripleChecker+Valid, 17409 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.59ms SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1430.62ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:12,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5181 Valid, 17409 Invalid, 1524 Unknown, 0 Unchecked, 48.59ms Time], IncrementalHoareTripleChecker [99 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 1430.62ms Time] [2021-11-13 17:37:12,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7412 states. [2021-11-13 17:37:13,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7412 to 6084. [2021-11-13 17:37:13,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6084 states, 5688 states have (on average 1.6415260196905765) internal successors, (9337), 5736 states have internal predecessors, (9337), 260 states have call successors, (260), 96 states have call predecessors, (260), 134 states have return successors, (379), 259 states have call predecessors, (379), 260 states have call successors, (379) [2021-11-13 17:37:13,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 9976 transitions. [2021-11-13 17:37:13,376 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 9976 transitions. Word has length 123 [2021-11-13 17:37:13,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:13,376 INFO L470 AbstractCegarLoop]: Abstraction has 6084 states and 9976 transitions. [2021-11-13 17:37:13,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:37:13,377 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 9976 transitions. [2021-11-13 17:37:13,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-13 17:37:13,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:13,392 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:13,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-13 17:37:13,393 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:13,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:13,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1362109035, now seen corresponding path program 1 times [2021-11-13 17:37:13,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:13,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377715009] [2021-11-13 17:37:13,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:13,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:13,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:37:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:13,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:37:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:13,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:37:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:13,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:37:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:13,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:37:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:13,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 17:37:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:13,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 17:37:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:13,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-11-13 17:37:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:13,609 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 17:37:13,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:13,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377715009] [2021-11-13 17:37:13,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377715009] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:37:13,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177259483] [2021-11-13 17:37:13,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:13,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:37:13,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:37:13,614 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:37:13,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 17:37:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:13,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:37:13,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:14,360 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-13 17:37:14,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:37:14,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177259483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:14,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:37:14,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-11-13 17:37:14,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433010244] [2021-11-13 17:37:14,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:14,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:37:14,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:14,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:37:14,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:37:14,364 INFO L87 Difference]: Start difference. First operand 6084 states and 9976 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 17:37:15,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:15,160 INFO L93 Difference]: Finished difference Result 13897 states and 21984 transitions. [2021-11-13 17:37:15,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:37:15,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 200 [2021-11-13 17:37:15,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:15,196 INFO L225 Difference]: With dead ends: 13897 [2021-11-13 17:37:15,197 INFO L226 Difference]: Without dead ends: 9950 [2021-11-13 17:37:15,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:37:15,215 INFO L933 BasicCegarLoop]: 4346 mSDtfsCounter, 4244 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4244 SdHoareTripleChecker+Valid, 4687 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.41ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.23ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:15,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4244 Valid, 4687 Invalid, 12 Unknown, 0 Unchecked, 7.41ms Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 9.23ms Time] [2021-11-13 17:37:15,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9950 states. [2021-11-13 17:37:16,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9950 to 9916. [2021-11-13 17:37:16,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9916 states, 9146 states have (on average 1.5909687294992347) internal successors, (14551), 9240 states have internal predecessors, (14551), 500 states have call successors, (500), 192 states have call predecessors, (500), 268 states have return successors, (731), 491 states have call predecessors, (731), 500 states have call successors, (731) [2021-11-13 17:37:16,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9916 states to 9916 states and 15782 transitions. [2021-11-13 17:37:16,078 INFO L78 Accepts]: Start accepts. Automaton has 9916 states and 15782 transitions. Word has length 200 [2021-11-13 17:37:16,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:16,079 INFO L470 AbstractCegarLoop]: Abstraction has 9916 states and 15782 transitions. [2021-11-13 17:37:16,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 17:37:16,079 INFO L276 IsEmpty]: Start isEmpty. Operand 9916 states and 15782 transitions. [2021-11-13 17:37:16,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-13 17:37:16,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:16,100 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:16,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:37:16,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-13 17:37:16,321 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:16,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:16,321 INFO L85 PathProgramCache]: Analyzing trace with hash 128011381, now seen corresponding path program 1 times [2021-11-13 17:37:16,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:16,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565282092] [2021-11-13 17:37:16,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:16,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:16,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:37:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:16,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:37:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:16,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:37:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:16,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:37:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:16,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:37:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:16,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 17:37:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:16,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 17:37:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:16,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-11-13 17:37:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:16,507 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 17:37:16,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:16,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565282092] [2021-11-13 17:37:16,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565282092] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:37:16,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409536669] [2021-11-13 17:37:16,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:16,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:37:16,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:37:16,509 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:37:16,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 17:37:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:16,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:37:16,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-13 17:37:17,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:37:17,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409536669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:17,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:37:17,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-11-13 17:37:17,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872188531] [2021-11-13 17:37:17,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:17,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:37:17,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:17,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:37:17,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:37:17,191 INFO L87 Difference]: Start difference. First operand 9916 states and 15782 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 17:37:18,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:18,415 INFO L93 Difference]: Finished difference Result 25313 states and 39418 transitions. [2021-11-13 17:37:18,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:37:18,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 200 [2021-11-13 17:37:18,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:18,472 INFO L225 Difference]: With dead ends: 25313 [2021-11-13 17:37:18,472 INFO L226 Difference]: Without dead ends: 17534 [2021-11-13 17:37:18,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:37:18,506 INFO L933 BasicCegarLoop]: 4346 mSDtfsCounter, 4256 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4256 SdHoareTripleChecker+Valid, 4687 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.07ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.14ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:18,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4256 Valid, 4687 Invalid, 12 Unknown, 0 Unchecked, 7.07ms Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 11.14ms Time] [2021-11-13 17:37:18,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17534 states. [2021-11-13 17:37:19,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17534 to 17468. [2021-11-13 17:37:19,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17468 states, 15966 states have (on average 1.555492922460228) internal successors, (24835), 16152 states have internal predecessors, (24835), 964 states have call successors, (964), 384 states have call predecessors, (964), 536 states have return successors, (1419), 939 states have call predecessors, (1419), 964 states have call successors, (1419) [2021-11-13 17:37:19,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17468 states to 17468 states and 27218 transitions. [2021-11-13 17:37:19,867 INFO L78 Accepts]: Start accepts. Automaton has 17468 states and 27218 transitions. Word has length 200 [2021-11-13 17:37:19,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:19,868 INFO L470 AbstractCegarLoop]: Abstraction has 17468 states and 27218 transitions. [2021-11-13 17:37:19,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 17:37:19,868 INFO L276 IsEmpty]: Start isEmpty. Operand 17468 states and 27218 transitions. [2021-11-13 17:37:19,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-13 17:37:19,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:19,898 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:19,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:37:20,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-13 17:37:20,125 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:20,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:20,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1369216171, now seen corresponding path program 1 times [2021-11-13 17:37:20,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:20,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895682130] [2021-11-13 17:37:20,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:20,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:20,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:37:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:20,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:37:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:20,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:37:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:20,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:37:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:20,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:37:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:20,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 17:37:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:20,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 17:37:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:20,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-11-13 17:37:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:20,310 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 17:37:20,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:20,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895682130] [2021-11-13 17:37:20,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895682130] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:37:20,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371930672] [2021-11-13 17:37:20,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:20,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:37:20,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:37:20,313 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:37:20,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 17:37:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:20,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:37:20,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:20,940 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-13 17:37:20,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:37:20,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371930672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:20,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:37:20,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-11-13 17:37:20,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564037915] [2021-11-13 17:37:20,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:20,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:37:20,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:20,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:37:20,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:37:20,944 INFO L87 Difference]: Start difference. First operand 17468 states and 27218 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 17:37:23,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:23,181 INFO L93 Difference]: Finished difference Result 47905 states and 73902 transitions. [2021-11-13 17:37:23,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:37:23,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 200 [2021-11-13 17:37:23,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:23,282 INFO L225 Difference]: With dead ends: 47905 [2021-11-13 17:37:23,282 INFO L226 Difference]: Without dead ends: 32574 [2021-11-13 17:37:23,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:37:23,329 INFO L933 BasicCegarLoop]: 4346 mSDtfsCounter, 4274 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4274 SdHoareTripleChecker+Valid, 4687 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.90ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.03ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:23,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4274 Valid, 4687 Invalid, 12 Unknown, 0 Unchecked, 5.90ms Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 9.03ms Time] [2021-11-13 17:37:23,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32574 states. [2021-11-13 17:37:25,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32574 to 32444. [2021-11-13 17:37:25,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32444 states, 29478 states have (on average 1.5326345070900333) internal successors, (45179), 29848 states have internal predecessors, (45179), 1892 states have call successors, (1892), 768 states have call predecessors, (1892), 1072 states have return successors, (2795), 1835 states have call predecessors, (2795), 1892 states have call successors, (2795) [2021-11-13 17:37:25,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32444 states to 32444 states and 49866 transitions. [2021-11-13 17:37:25,687 INFO L78 Accepts]: Start accepts. Automaton has 32444 states and 49866 transitions. Word has length 200 [2021-11-13 17:37:25,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:25,687 INFO L470 AbstractCegarLoop]: Abstraction has 32444 states and 49866 transitions. [2021-11-13 17:37:25,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 17:37:25,688 INFO L276 IsEmpty]: Start isEmpty. Operand 32444 states and 49866 transitions. [2021-11-13 17:37:25,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-13 17:37:25,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:25,737 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:25,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:37:25,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:37:25,965 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:25,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:25,966 INFO L85 PathProgramCache]: Analyzing trace with hash -718302667, now seen corresponding path program 1 times [2021-11-13 17:37:25,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:25,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241779473] [2021-11-13 17:37:25,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:25,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:26,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:37:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:26,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:37:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:26,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:37:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:26,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:37:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:26,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:37:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:26,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 17:37:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:26,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 17:37:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:26,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-11-13 17:37:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:26,159 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 17:37:26,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:26,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241779473] [2021-11-13 17:37:26,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241779473] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:37:26,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004682035] [2021-11-13 17:37:26,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:26,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:37:26,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:37:26,162 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:37:26,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 17:37:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:26,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:37:26,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:26,784 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-13 17:37:26,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:37:26,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004682035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:26,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:37:26,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-11-13 17:37:26,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481280898] [2021-11-13 17:37:26,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:26,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:37:26,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:26,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:37:26,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:37:26,788 INFO L87 Difference]: Start difference. First operand 32444 states and 49866 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 17:37:30,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:30,920 INFO L93 Difference]: Finished difference Result 92417 states and 141718 transitions. [2021-11-13 17:37:30,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:37:30,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 200 [2021-11-13 17:37:30,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:31,113 INFO L225 Difference]: With dead ends: 92417 [2021-11-13 17:37:31,113 INFO L226 Difference]: Without dead ends: 62110 [2021-11-13 17:37:31,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:37:31,178 INFO L933 BasicCegarLoop]: 4346 mSDtfsCounter, 4268 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4268 SdHoareTripleChecker+Valid, 4687 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.97ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.82ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:31,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4268 Valid, 4687 Invalid, 12 Unknown, 0 Unchecked, 5.97ms Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 23.82ms Time] [2021-11-13 17:37:31,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62110 states. [2021-11-13 17:37:35,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62110 to 61852. [2021-11-13 17:37:35,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61852 states, 56054 states have (on average 1.5204445713062404) internal successors, (85227), 56792 states have internal predecessors, (85227), 3652 states have call successors, (3652), 1536 states have call predecessors, (3652), 2144 states have return successors, (5451), 3531 states have call predecessors, (5451), 3652 states have call successors, (5451) [2021-11-13 17:37:36,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61852 states to 61852 states and 94330 transitions. [2021-11-13 17:37:36,151 INFO L78 Accepts]: Start accepts. Automaton has 61852 states and 94330 transitions. Word has length 200 [2021-11-13 17:37:36,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:36,151 INFO L470 AbstractCegarLoop]: Abstraction has 61852 states and 94330 transitions. [2021-11-13 17:37:36,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 17:37:36,152 INFO L276 IsEmpty]: Start isEmpty. Operand 61852 states and 94330 transitions. [2021-11-13 17:37:36,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-13 17:37:36,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:36,221 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:36,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:37:36,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:37:36,437 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:36,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:36,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1985634581, now seen corresponding path program 1 times [2021-11-13 17:37:36,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:36,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590431402] [2021-11-13 17:37:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:36,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:36,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:37:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:36,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:37:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:36,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:37:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:36,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:37:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:36,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:37:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:36,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 17:37:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:36,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 17:37:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:36,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-11-13 17:37:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:36,589 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 17:37:36,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:36,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590431402] [2021-11-13 17:37:36,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590431402] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:37:36,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418955930] [2021-11-13 17:37:36,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:36,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:37:36,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:37:36,591 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:37:36,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 17:37:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:36,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:37:36,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:37,042 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-13 17:37:37,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:37:37,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418955930] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:37,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:37:37,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-13 17:37:37,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979133586] [2021-11-13 17:37:37,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:37,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:37:37,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:37,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:37:37,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:37:37,045 INFO L87 Difference]: Start difference. First operand 61852 states and 94330 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 17:37:45,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:45,555 INFO L93 Difference]: Finished difference Result 179497 states and 275095 transitions. [2021-11-13 17:37:45,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:37:45,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 200 [2021-11-13 17:37:45,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:46,284 INFO L225 Difference]: With dead ends: 179497 [2021-11-13 17:37:46,284 INFO L226 Difference]: Without dead ends: 119783 [2021-11-13 17:37:46,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:37:46,379 INFO L933 BasicCegarLoop]: 4683 mSDtfsCounter, 340 mSDsluCounter, 4334 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 9017 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.11ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.76ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:46,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 9017 Invalid, 13 Unknown, 0 Unchecked, 6.11ms Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 32.76ms Time] [2021-11-13 17:37:46,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119783 states. [2021-11-13 17:37:55,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119783 to 119783. [2021-11-13 17:37:55,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119783 states, 108446 states have (on average 1.5116186857975398) internal successors, (163929), 109793 states have internal predecessors, (163929), 7047 states have call successors, (7047), 3072 states have call predecessors, (7047), 4288 states have return successors, (12502), 6933 states have call predecessors, (12502), 7047 states have call successors, (12502) [2021-11-13 17:37:56,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119783 states to 119783 states and 183478 transitions. [2021-11-13 17:37:56,173 INFO L78 Accepts]: Start accepts. Automaton has 119783 states and 183478 transitions. Word has length 200 [2021-11-13 17:37:56,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:56,174 INFO L470 AbstractCegarLoop]: Abstraction has 119783 states and 183478 transitions. [2021-11-13 17:37:56,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 17:37:56,174 INFO L276 IsEmpty]: Start isEmpty. Operand 119783 states and 183478 transitions. [2021-11-13 17:37:56,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-13 17:37:56,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:56,451 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:56,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-13 17:37:56,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-13 17:37:56,665 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:56,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:56,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1980380111, now seen corresponding path program 1 times [2021-11-13 17:37:56,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:56,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028215025] [2021-11-13 17:37:56,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:56,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:56,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:37:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:56,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:37:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:56,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:37:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:56,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:37:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:56,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:37:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:56,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 17:37:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:56,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 17:37:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:56,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-13 17:37:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:56,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 17:37:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:56,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-11-13 17:37:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:56,875 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-13 17:37:56,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:56,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028215025] [2021-11-13 17:37:56,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028215025] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:37:56,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178155880] [2021-11-13 17:37:56,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:56,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:37:56,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:37:56,879 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:37:56,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1faa8973-5ae8-4ce2-9f30-ce40870b47db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-13 17:37:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:57,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 1008 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:37:57,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:57,589 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-13 17:37:57,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:37:57,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178155880] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:57,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:37:57,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-11-13 17:37:57,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313426234] [2021-11-13 17:37:57,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:57,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:37:57,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:57,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:37:57,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:37:57,592 INFO L87 Difference]: Start difference. First operand 119783 states and 183478 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)