./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.10.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288e0fa1-6876-4ab4-be9f-4c0e002348b7/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288e0fa1-6876-4ab4-be9f-4c0e002348b7/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288e0fa1-6876-4ab4-be9f-4c0e002348b7/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288e0fa1-6876-4ab4-be9f-4c0e002348b7/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.10.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288e0fa1-6876-4ab4-be9f-4c0e002348b7/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288e0fa1-6876-4ab4-be9f-4c0e002348b7/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 02030f9c3db6d0a219b6d0b652f5c8999a9fbcf506b26b943850b37227141b78 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:09:04,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:09:04,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:09:04,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:09:04,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:09:04,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:09:04,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:09:04,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:09:04,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:09:04,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:09:04,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:09:04,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:09:04,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:09:04,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:09:04,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:09:04,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:09:04,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:09:04,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:09:04,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:09:04,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:09:04,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:09:04,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:09:04,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:09:04,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:09:04,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:09:04,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:09:04,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:09:04,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:09:04,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:09:04,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:09:04,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:09:04,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:09:04,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:09:04,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:09:04,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:09:04,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:09:04,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:09:04,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:09:04,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:09:04,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:09:04,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:09:04,392 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288e0fa1-6876-4ab4-be9f-4c0e002348b7/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 21:09:04,417 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:09:04,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:09:04,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:09:04,418 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:09:04,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:09:04,418 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:09:04,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:09:04,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:09:04,420 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:09:04,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:09:04,420 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 21:09:04,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 21:09:04,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 21:09:04,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:09:04,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 21:09:04,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:09:04,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 21:09:04,421 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 21:09:04,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 21:09:04,422 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:09:04,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 21:09:04,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:09:04,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:09:04,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:09:04,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:09:04,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:09:04,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:09:04,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 21:09:04,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 21:09:04,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 21:09:04,424 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 21:09:04,424 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 21:09:04,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 21:09:04,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:09:04,425 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_288e0fa1-6876-4ab4-be9f-4c0e002348b7/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288e0fa1-6876-4ab4-be9f-4c0e002348b7/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02030f9c3db6d0a219b6d0b652f5c8999a9fbcf506b26b943850b37227141b78 [2021-12-06 21:09:04,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:09:04,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:09:04,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:09:04,632 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:09:04,632 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:09:04,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288e0fa1-6876-4ab4-be9f-4c0e002348b7/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.10.cil-2.c [2021-12-06 21:09:04,674 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288e0fa1-6876-4ab4-be9f-4c0e002348b7/bin/uautomizer-DrprNOufMa/data/e6f04c771/a97f69270ff545299e042b8aaa5b1352/FLAG47d249f1e [2021-12-06 21:09:05,413 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:09:05,414 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288e0fa1-6876-4ab4-be9f-4c0e002348b7/sv-benchmarks/c/combinations/Problem05_label42+token_ring.10.cil-2.c [2021-12-06 21:09:05,447 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288e0fa1-6876-4ab4-be9f-4c0e002348b7/bin/uautomizer-DrprNOufMa/data/e6f04c771/a97f69270ff545299e042b8aaa5b1352/FLAG47d249f1e [2021-12-06 21:09:05,955 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288e0fa1-6876-4ab4-be9f-4c0e002348b7/bin/uautomizer-DrprNOufMa/data/e6f04c771/a97f69270ff545299e042b8aaa5b1352 [2021-12-06 21:09:05,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:09:05,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:09:05,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:09:05,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:09:05,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:09:05,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:09:05" (1/1) ... [2021-12-06 21:09:05,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@178faae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:09:05, skipping insertion in model container [2021-12-06 21:09:05,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:09:05" (1/1) ... [2021-12-06 21:09:05,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:09:06,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:09:07,457 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288e0fa1-6876-4ab4-be9f-4c0e002348b7/sv-benchmarks/c/combinations/Problem05_label42+token_ring.10.cil-2.c[378560,378573] [2021-12-06 21:09:07,480 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288e0fa1-6876-4ab4-be9f-4c0e002348b7/sv-benchmarks/c/combinations/Problem05_label42+token_ring.10.cil-2.c[383339,383352] [2021-12-06 21:09:07,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:09:07,733 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 21:09:08,545 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288e0fa1-6876-4ab4-be9f-4c0e002348b7/sv-benchmarks/c/combinations/Problem05_label42+token_ring.10.cil-2.c[378560,378573] [2021-12-06 21:09:08,551 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288e0fa1-6876-4ab4-be9f-4c0e002348b7/sv-benchmarks/c/combinations/Problem05_label42+token_ring.10.cil-2.c[383339,383352] [2021-12-06 21:09:08,566 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:09:08,620 INFO L208 MainTranslator]: Completed translation [2021-12-06 21:09:08,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:09:08 WrapperNode [2021-12-06 21:09:08,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:09:08,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 21:09:08,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 21:09:08,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 21:09:08,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:09:08" (1/1) ... [2021-12-06 21:09:08,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:09:08" (1/1) ... [2021-12-06 21:09:09,047 INFO L137 Inliner]: procedures = 64, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13083 [2021-12-06 21:09:09,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 21:09:09,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 21:09:09,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 21:09:09,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 21:09:09,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:09:08" (1/1) ... [2021-12-06 21:09:09,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:09:08" (1/1) ... [2021-12-06 21:09:09,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:09:08" (1/1) ... [2021-12-06 21:09:09,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:09:08" (1/1) ... [2021-12-06 21:09:09,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:09:08" (1/1) ... [2021-12-06 21:09:09,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:09:08" (1/1) ... [2021-12-06 21:09:09,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:09:08" (1/1) ... [2021-12-06 21:09:09,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 21:09:09,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 21:09:09,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 21:09:09,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 21:09:09,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:09:08" (1/1) ... [2021-12-06 21:09:09,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:09:09,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288e0fa1-6876-4ab4-be9f-4c0e002348b7/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:09:09,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288e0fa1-6876-4ab4-be9f-4c0e002348b7/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 21:09:09,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288e0fa1-6876-4ab4-be9f-4c0e002348b7/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 21:09:09,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 21:09:09,371 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-06 21:09:09,371 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-06 21:09:09,371 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-06 21:09:09,371 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-06 21:09:09,371 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-06 21:09:09,372 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-06 21:09:09,372 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-06 21:09:09,372 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-06 21:09:09,372 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-06 21:09:09,372 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-06 21:09:09,372 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-06 21:09:09,372 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-06 21:09:09,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 21:09:09,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 21:09:09,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 21:09:09,480 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 21:09:09,482 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 21:09:13,618 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 21:09:13,643 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 21:09:13,643 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-06 21:09:13,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:09:13 BoogieIcfgContainer [2021-12-06 21:09:13,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 21:09:13,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 21:09:13,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 21:09:13,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 21:09:13,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 09:09:05" (1/3) ... [2021-12-06 21:09:13,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de2b893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:09:13, skipping insertion in model container [2021-12-06 21:09:13,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:09:08" (2/3) ... [2021-12-06 21:09:13,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de2b893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:09:13, skipping insertion in model container [2021-12-06 21:09:13,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:09:13" (3/3) ... [2021-12-06 21:09:13,653 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.10.cil-2.c [2021-12-06 21:09:13,656 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 21:09:13,656 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 21:09:13,698 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 21:09:13,702 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 21:09:13,703 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 21:09:13,751 INFO L276 IsEmpty]: Start isEmpty. Operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-06 21:09:13,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 21:09:13,765 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:09:13,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:09:13,766 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:09:13,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:13,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1879597445, now seen corresponding path program 1 times [2021-12-06 21:09:13,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:13,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351844416] [2021-12-06 21:09:13,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:13,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:13,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:09:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:13,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:09:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:14,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 21:09:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:14,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:09:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:14,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 21:09:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:14,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:09:14,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:09:14,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351844416] [2021-12-06 21:09:14,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351844416] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:09:14,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:09:14,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:09:14,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195504951] [2021-12-06 21:09:14,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:09:14,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:09:14,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:09:14,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:09:14,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:09:14,155 INFO L87 Difference]: Start difference. First operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:15,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:09:15,363 INFO L93 Difference]: Finished difference Result 5140 states and 9446 transitions. [2021-12-06 21:09:15,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:09:15,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 156 [2021-12-06 21:09:15,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:09:15,389 INFO L225 Difference]: With dead ends: 5140 [2021-12-06 21:09:15,389 INFO L226 Difference]: Without dead ends: 2568 [2021-12-06 21:09:15,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:09:15,399 INFO L933 BasicCegarLoop]: 4589 mSDtfsCounter, 882 mSDsluCounter, 12431 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 17020 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 21:09:15,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [904 Valid, 17020 Invalid, 656 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 21:09:15,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2021-12-06 21:09:15,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2448. [2021-12-06 21:09:15,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2416 states have (on average 1.830298013245033) internal successors, (4422), 2418 states have internal predecessors, (4422), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-06 21:09:15,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4470 transitions. [2021-12-06 21:09:15,521 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4470 transitions. Word has length 156 [2021-12-06 21:09:15,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:09:15,521 INFO L470 AbstractCegarLoop]: Abstraction has 2448 states and 4470 transitions. [2021-12-06 21:09:15,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:15,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4470 transitions. [2021-12-06 21:09:15,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 21:09:15,526 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:09:15,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:09:15,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 21:09:15,527 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:09:15,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:15,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1988815353, now seen corresponding path program 1 times [2021-12-06 21:09:15,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:15,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735361563] [2021-12-06 21:09:15,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:15,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:15,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:09:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:15,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:09:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:15,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 21:09:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:15,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:09:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:15,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 21:09:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:09:15,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:09:15,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735361563] [2021-12-06 21:09:15,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735361563] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:09:15,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:09:15,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:09:15,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224911521] [2021-12-06 21:09:15,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:09:15,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:09:15,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:09:15,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:09:15,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:09:15,718 INFO L87 Difference]: Start difference. First operand 2448 states and 4470 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:16,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:09:16,940 INFO L93 Difference]: Finished difference Result 2899 states and 5204 transitions. [2021-12-06 21:09:16,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:09:16,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-06 21:09:16,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:09:16,954 INFO L225 Difference]: With dead ends: 2899 [2021-12-06 21:09:16,954 INFO L226 Difference]: Without dead ends: 2590 [2021-12-06 21:09:16,956 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 [2021-12-06 21:09:16,958 INFO L933 BasicCegarLoop]: 4517 mSDtfsCounter, 5049 mSDsluCounter, 12511 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5067 SdHoareTripleChecker+Valid, 17028 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:09:16,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5067 Valid, 17028 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 21:09:16,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2021-12-06 21:09:17,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2448. [2021-12-06 21:09:17,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2416 states have (on average 1.8298841059602649) internal successors, (4421), 2418 states have internal predecessors, (4421), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-06 21:09:17,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4469 transitions. [2021-12-06 21:09:17,032 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4469 transitions. Word has length 156 [2021-12-06 21:09:17,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:09:17,032 INFO L470 AbstractCegarLoop]: Abstraction has 2448 states and 4469 transitions. [2021-12-06 21:09:17,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:17,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4469 transitions. [2021-12-06 21:09:17,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 21:09:17,035 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:09:17,035 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:09:17,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 21:09:17,036 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:09:17,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:17,036 INFO L85 PathProgramCache]: Analyzing trace with hash 371374903, now seen corresponding path program 1 times [2021-12-06 21:09:17,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:17,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980030915] [2021-12-06 21:09:17,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:17,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:17,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:09:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:17,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:09:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:17,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 21:09:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:17,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:09:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:17,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 21:09:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:09:17,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:09:17,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980030915] [2021-12-06 21:09:17,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980030915] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:09:17,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:09:17,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:09:17,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987671831] [2021-12-06 21:09:17,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:09:17,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:09:17,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:09:17,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:09:17,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:09:17,191 INFO L87 Difference]: Start difference. First operand 2448 states and 4469 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:19,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:09:19,287 INFO L93 Difference]: Finished difference Result 3339 states and 5914 transitions. [2021-12-06 21:09:19,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:09:19,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-06 21:09:19,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:09:19,301 INFO L225 Difference]: With dead ends: 3339 [2021-12-06 21:09:19,301 INFO L226 Difference]: Without dead ends: 3030 [2021-12-06 21:09:19,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 21:09:19,303 INFO L933 BasicCegarLoop]: 4781 mSDtfsCounter, 5253 mSDsluCounter, 17510 mSDsCounter, 0 mSdLazyCounter, 2596 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5270 SdHoareTripleChecker+Valid, 22291 SdHoareTripleChecker+Invalid, 2673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:09:19,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5270 Valid, 22291 Invalid, 2673 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2596 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 21:09:19,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2021-12-06 21:09:19,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 2775. [2021-12-06 21:09:19,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 2714 states have (on average 1.8032424465733234) internal successors, (4894), 2718 states have internal predecessors, (4894), 45 states have call successors, (45), 12 states have call predecessors, (45), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2021-12-06 21:09:19,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 4991 transitions. [2021-12-06 21:09:19,379 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 4991 transitions. Word has length 156 [2021-12-06 21:09:19,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:09:19,379 INFO L470 AbstractCegarLoop]: Abstraction has 2775 states and 4991 transitions. [2021-12-06 21:09:19,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:19,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 4991 transitions. [2021-12-06 21:09:19,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 21:09:19,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:09:19,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:09:19,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 21:09:19,382 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:09:19,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:19,382 INFO L85 PathProgramCache]: Analyzing trace with hash 734841401, now seen corresponding path program 1 times [2021-12-06 21:09:19,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:19,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023828918] [2021-12-06 21:09:19,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:19,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:19,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:09:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:19,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:09:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:19,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 21:09:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:19,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:09:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:19,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 21:09:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:19,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:09:19,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:09:19,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023828918] [2021-12-06 21:09:19,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023828918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:09:19,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:09:19,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:09:19,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912176601] [2021-12-06 21:09:19,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:09:19,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:09:19,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:09:19,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:09:19,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:09:19,514 INFO L87 Difference]: Start difference. First operand 2775 states and 4991 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:21,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:09:21,634 INFO L93 Difference]: Finished difference Result 4473 states and 7720 transitions. [2021-12-06 21:09:21,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:09:21,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-06 21:09:21,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:09:21,651 INFO L225 Difference]: With dead ends: 4473 [2021-12-06 21:09:21,651 INFO L226 Difference]: Without dead ends: 3839 [2021-12-06 21:09:21,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 21:09:21,655 INFO L933 BasicCegarLoop]: 4816 mSDtfsCounter, 5215 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2713 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5232 SdHoareTripleChecker+Valid, 22334 SdHoareTripleChecker+Invalid, 2793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:09:21,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5232 Valid, 22334 Invalid, 2793 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2713 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 21:09:21,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3839 states. [2021-12-06 21:09:21,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3839 to 3378. [2021-12-06 21:09:21,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3378 states, 3265 states have (on average 1.762021439509954) internal successors, (5753), 3271 states have internal predecessors, (5753), 83 states have call successors, (83), 24 states have call predecessors, (83), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2021-12-06 21:09:21,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3378 states to 3378 states and 5936 transitions. [2021-12-06 21:09:21,762 INFO L78 Accepts]: Start accepts. Automaton has 3378 states and 5936 transitions. Word has length 156 [2021-12-06 21:09:21,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:09:21,762 INFO L470 AbstractCegarLoop]: Abstraction has 3378 states and 5936 transitions. [2021-12-06 21:09:21,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:21,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3378 states and 5936 transitions. [2021-12-06 21:09:21,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 21:09:21,765 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:09:21,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:09:21,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 21:09:21,766 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:09:21,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:21,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1023660791, now seen corresponding path program 1 times [2021-12-06 21:09:21,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:21,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895532817] [2021-12-06 21:09:21,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:21,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:21,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:09:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:21,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:09:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:21,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 21:09:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:21,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:09:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:21,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 21:09:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:21,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:09:21,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:09:21,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895532817] [2021-12-06 21:09:21,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895532817] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:09:21,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:09:21,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:09:21,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601152366] [2021-12-06 21:09:21,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:09:21,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:09:21,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:09:21,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:09:21,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:09:21,873 INFO L87 Difference]: Start difference. First operand 3378 states and 5936 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:24,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:09:24,101 INFO L93 Difference]: Finished difference Result 6692 states and 11245 transitions. [2021-12-06 21:09:24,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:09:24,101 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-06 21:09:24,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:09:24,124 INFO L225 Difference]: With dead ends: 6692 [2021-12-06 21:09:24,124 INFO L226 Difference]: Without dead ends: 5455 [2021-12-06 21:09:24,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 21:09:24,129 INFO L933 BasicCegarLoop]: 4812 mSDtfsCounter, 5215 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5232 SdHoareTripleChecker+Valid, 22330 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:09:24,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5232 Valid, 22330 Invalid, 2786 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 21:09:24,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5455 states. [2021-12-06 21:09:24,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5455 to 4587. [2021-12-06 21:09:24,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4587 states, 4370 states have (on average 1.7105263157894737) internal successors, (7475), 4380 states have internal predecessors, (7475), 159 states have call successors, (159), 48 states have call predecessors, (159), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2021-12-06 21:09:24,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4587 states to 4587 states and 7836 transitions. [2021-12-06 21:09:24,283 INFO L78 Accepts]: Start accepts. Automaton has 4587 states and 7836 transitions. Word has length 156 [2021-12-06 21:09:24,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:09:24,283 INFO L470 AbstractCegarLoop]: Abstraction has 4587 states and 7836 transitions. [2021-12-06 21:09:24,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:24,284 INFO L276 IsEmpty]: Start isEmpty. Operand 4587 states and 7836 transitions. [2021-12-06 21:09:24,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 21:09:24,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:09:24,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:09:24,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 21:09:24,287 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:09:24,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:24,287 INFO L85 PathProgramCache]: Analyzing trace with hash 478788217, now seen corresponding path program 1 times [2021-12-06 21:09:24,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:24,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349680487] [2021-12-06 21:09:24,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:24,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:24,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:09:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:24,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:09:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:24,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 21:09:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:24,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:09:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:24,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 21:09:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:24,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:09:24,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:09:24,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349680487] [2021-12-06 21:09:24,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349680487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:09:24,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:09:24,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:09:24,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176418988] [2021-12-06 21:09:24,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:09:24,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:09:24,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:09:24,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:09:24,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:09:24,401 INFO L87 Difference]: Start difference. First operand 4587 states and 7836 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:25,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:09:25,592 INFO L93 Difference]: Finished difference Result 7947 states and 13260 transitions. [2021-12-06 21:09:25,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:09:25,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-06 21:09:25,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:09:25,616 INFO L225 Difference]: With dead ends: 7947 [2021-12-06 21:09:25,616 INFO L226 Difference]: Without dead ends: 5499 [2021-12-06 21:09:25,623 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 [2021-12-06 21:09:25,624 INFO L933 BasicCegarLoop]: 4503 mSDtfsCounter, 4909 mSDsluCounter, 16636 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4927 SdHoareTripleChecker+Valid, 21139 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 21:09:25,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4927 Valid, 21139 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 21:09:25,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5499 states. [2021-12-06 21:09:25,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5499 to 4587. [2021-12-06 21:09:25,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4587 states, 4370 states have (on average 1.7084668192219679) internal successors, (7466), 4380 states have internal predecessors, (7466), 159 states have call successors, (159), 48 states have call predecessors, (159), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2021-12-06 21:09:25,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4587 states to 4587 states and 7827 transitions. [2021-12-06 21:09:25,798 INFO L78 Accepts]: Start accepts. Automaton has 4587 states and 7827 transitions. Word has length 156 [2021-12-06 21:09:25,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:09:25,799 INFO L470 AbstractCegarLoop]: Abstraction has 4587 states and 7827 transitions. [2021-12-06 21:09:25,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:25,799 INFO L276 IsEmpty]: Start isEmpty. Operand 4587 states and 7827 transitions. [2021-12-06 21:09:25,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 21:09:25,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:09:25,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:09:25,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 21:09:25,802 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:09:25,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:25,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1153948343, now seen corresponding path program 1 times [2021-12-06 21:09:25,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:25,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903469023] [2021-12-06 21:09:25,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:25,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:25,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:09:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:25,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:09:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:25,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 21:09:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:25,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:09:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:25,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 21:09:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:25,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:09:25,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:09:25,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903469023] [2021-12-06 21:09:25,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903469023] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:09:25,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:09:25,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:09:25,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416231133] [2021-12-06 21:09:25,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:09:25,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:09:25,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:09:25,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:09:25,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:09:25,911 INFO L87 Difference]: Start difference. First operand 4587 states and 7827 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:26,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:09:26,968 INFO L93 Difference]: Finished difference Result 7938 states and 13217 transitions. [2021-12-06 21:09:26,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:09:26,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-06 21:09:26,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:09:26,987 INFO L225 Difference]: With dead ends: 7938 [2021-12-06 21:09:26,987 INFO L226 Difference]: Without dead ends: 5490 [2021-12-06 21:09:26,994 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 [2021-12-06 21:09:26,995 INFO L933 BasicCegarLoop]: 4499 mSDtfsCounter, 5048 mSDsluCounter, 12510 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5066 SdHoareTripleChecker+Valid, 17009 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:09:26,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5066 Valid, 17009 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 21:09:27,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5490 states. [2021-12-06 21:09:27,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5490 to 4587. [2021-12-06 21:09:27,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4587 states, 4370 states have (on average 1.7064073226544623) internal successors, (7457), 4380 states have internal predecessors, (7457), 159 states have call successors, (159), 48 states have call predecessors, (159), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2021-12-06 21:09:27,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4587 states to 4587 states and 7818 transitions. [2021-12-06 21:09:27,186 INFO L78 Accepts]: Start accepts. Automaton has 4587 states and 7818 transitions. Word has length 156 [2021-12-06 21:09:27,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:09:27,187 INFO L470 AbstractCegarLoop]: Abstraction has 4587 states and 7818 transitions. [2021-12-06 21:09:27,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:27,188 INFO L276 IsEmpty]: Start isEmpty. Operand 4587 states and 7818 transitions. [2021-12-06 21:09:27,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 21:09:27,191 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:09:27,191 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:09:27,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 21:09:27,192 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:09:27,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:27,192 INFO L85 PathProgramCache]: Analyzing trace with hash 205896377, now seen corresponding path program 1 times [2021-12-06 21:09:27,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:27,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723604833] [2021-12-06 21:09:27,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:27,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:27,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:09:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:27,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:09:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:27,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 21:09:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:27,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:09:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:27,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 21:09:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:27,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:09:27,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:09:27,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723604833] [2021-12-06 21:09:27,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723604833] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:09:27,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:09:27,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:09:27,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340667400] [2021-12-06 21:09:27,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:09:27,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:09:27,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:09:27,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:09:27,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:09:27,306 INFO L87 Difference]: Start difference. First operand 4587 states and 7818 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:28,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:09:28,383 INFO L93 Difference]: Finished difference Result 7929 states and 13174 transitions. [2021-12-06 21:09:28,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:09:28,384 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-06 21:09:28,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:09:28,397 INFO L225 Difference]: With dead ends: 7929 [2021-12-06 21:09:28,397 INFO L226 Difference]: Without dead ends: 5481 [2021-12-06 21:09:28,403 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 [2021-12-06 21:09:28,404 INFO L933 BasicCegarLoop]: 4493 mSDtfsCounter, 5049 mSDsluCounter, 12510 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5067 SdHoareTripleChecker+Valid, 17003 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 21:09:28,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5067 Valid, 17003 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 21:09:28,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2021-12-06 21:09:28,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 4587. [2021-12-06 21:09:28,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4587 states, 4370 states have (on average 1.7043478260869565) internal successors, (7448), 4380 states have internal predecessors, (7448), 159 states have call successors, (159), 48 states have call predecessors, (159), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2021-12-06 21:09:28,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4587 states to 4587 states and 7809 transitions. [2021-12-06 21:09:28,557 INFO L78 Accepts]: Start accepts. Automaton has 4587 states and 7809 transitions. Word has length 156 [2021-12-06 21:09:28,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:09:28,558 INFO L470 AbstractCegarLoop]: Abstraction has 4587 states and 7809 transitions. [2021-12-06 21:09:28,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:28,558 INFO L276 IsEmpty]: Start isEmpty. Operand 4587 states and 7809 transitions. [2021-12-06 21:09:28,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 21:09:28,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:09:28,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:09:28,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 21:09:28,560 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:09:28,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:28,561 INFO L85 PathProgramCache]: Analyzing trace with hash -378875273, now seen corresponding path program 1 times [2021-12-06 21:09:28,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:28,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120637327] [2021-12-06 21:09:28,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:28,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:28,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:09:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:28,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:09:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:28,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 21:09:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:28,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:09:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:28,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 21:09:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:28,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:09:28,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:09:28,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120637327] [2021-12-06 21:09:28,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120637327] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:09:28,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:09:28,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:09:28,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204107978] [2021-12-06 21:09:28,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:09:28,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:09:28,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:09:28,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:09:28,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:09:28,661 INFO L87 Difference]: Start difference. First operand 4587 states and 7809 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:30,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:09:30,941 INFO L93 Difference]: Finished difference Result 11093 states and 18121 transitions. [2021-12-06 21:09:30,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:09:30,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-06 21:09:30,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:09:30,959 INFO L225 Difference]: With dead ends: 11093 [2021-12-06 21:09:30,959 INFO L226 Difference]: Without dead ends: 8647 [2021-12-06 21:09:30,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 21:09:30,967 INFO L933 BasicCegarLoop]: 4784 mSDtfsCounter, 5237 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2557 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5254 SdHoareTripleChecker+Valid, 22302 SdHoareTripleChecker+Invalid, 2642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:09:30,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5254 Valid, 22302 Invalid, 2642 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 2557 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 21:09:30,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8647 states. [2021-12-06 21:09:31,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8647 to 7041. [2021-12-06 21:09:31,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7041 states, 6616 states have (on average 1.6497883917775091) internal successors, (10915), 6634 states have internal predecessors, (10915), 311 states have call successors, (311), 96 states have call predecessors, (311), 112 states have return successors, (424), 326 states have call predecessors, (424), 311 states have call successors, (424) [2021-12-06 21:09:31,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7041 states to 7041 states and 11650 transitions. [2021-12-06 21:09:31,275 INFO L78 Accepts]: Start accepts. Automaton has 7041 states and 11650 transitions. Word has length 156 [2021-12-06 21:09:31,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:09:31,275 INFO L470 AbstractCegarLoop]: Abstraction has 7041 states and 11650 transitions. [2021-12-06 21:09:31,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:31,276 INFO L276 IsEmpty]: Start isEmpty. Operand 7041 states and 11650 transitions. [2021-12-06 21:09:31,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 21:09:31,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:09:31,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:09:31,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 21:09:31,279 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:09:31,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:31,279 INFO L85 PathProgramCache]: Analyzing trace with hash -808533579, now seen corresponding path program 1 times [2021-12-06 21:09:31,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:31,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431769548] [2021-12-06 21:09:31,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:31,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:31,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:09:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:31,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:09:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:31,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 21:09:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:31,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:09:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:31,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 21:09:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:31,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:09:31,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:09:31,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431769548] [2021-12-06 21:09:31,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431769548] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:09:31,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:09:31,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:09:31,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083249985] [2021-12-06 21:09:31,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:09:31,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:09:31,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:09:31,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:09:31,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:09:31,377 INFO L87 Difference]: Start difference. First operand 7041 states and 11650 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:33,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:09:33,929 INFO L93 Difference]: Finished difference Result 19959 states and 32162 transitions. [2021-12-06 21:09:33,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:09:33,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-06 21:09:33,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:09:33,967 INFO L225 Difference]: With dead ends: 19959 [2021-12-06 21:09:33,967 INFO L226 Difference]: Without dead ends: 15059 [2021-12-06 21:09:33,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 21:09:33,981 INFO L933 BasicCegarLoop]: 4740 mSDtfsCounter, 5263 mSDsluCounter, 17474 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5280 SdHoareTripleChecker+Valid, 22214 SdHoareTripleChecker+Invalid, 2546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 21:09:33,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5280 Valid, 22214 Invalid, 2546 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 2461 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 21:09:33,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15059 states. [2021-12-06 21:09:34,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15059 to 11965. [2021-12-06 21:09:34,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11965 states, 11124 states have (on average 1.6067062207838907) internal successors, (17873), 11158 states have internal predecessors, (17873), 615 states have call successors, (615), 192 states have call predecessors, (615), 224 states have return successors, (922), 646 states have call predecessors, (922), 615 states have call successors, (922) [2021-12-06 21:09:34,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11965 states to 11965 states and 19410 transitions. [2021-12-06 21:09:34,543 INFO L78 Accepts]: Start accepts. Automaton has 11965 states and 19410 transitions. Word has length 156 [2021-12-06 21:09:34,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:09:34,544 INFO L470 AbstractCegarLoop]: Abstraction has 11965 states and 19410 transitions. [2021-12-06 21:09:34,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:34,544 INFO L276 IsEmpty]: Start isEmpty. Operand 11965 states and 19410 transitions. [2021-12-06 21:09:34,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 21:09:34,549 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:09:34,549 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:09:34,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 21:09:34,549 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:09:34,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:34,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1515130185, now seen corresponding path program 1 times [2021-12-06 21:09:34,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:34,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704697090] [2021-12-06 21:09:34,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:34,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:34,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:09:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:34,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:09:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:34,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 21:09:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:34,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:09:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:34,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 21:09:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:34,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:09:34,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:09:34,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704697090] [2021-12-06 21:09:34,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704697090] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:09:34,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:09:34,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:09:34,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482498878] [2021-12-06 21:09:34,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:09:34,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:09:34,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:09:34,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:09:34,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:09:34,648 INFO L87 Difference]: Start difference. First operand 11965 states and 19410 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:38,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:09:38,808 INFO L93 Difference]: Finished difference Result 42459 states and 67734 transitions. [2021-12-06 21:09:38,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 21:09:38,809 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-06 21:09:38,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:09:38,879 INFO L225 Difference]: With dead ends: 42459 [2021-12-06 21:09:38,879 INFO L226 Difference]: Without dead ends: 32635 [2021-12-06 21:09:38,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 21:09:38,934 INFO L933 BasicCegarLoop]: 4772 mSDtfsCounter, 5647 mSDsluCounter, 17510 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5675 SdHoareTripleChecker+Valid, 22282 SdHoareTripleChecker+Invalid, 2624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:09:38,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5675 Valid, 22282 Invalid, 2624 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 21:09:38,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32635 states. [2021-12-06 21:09:40,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32635 to 21749. [2021-12-06 21:09:40,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21749 states, 20108 states have (on average 1.580117366222399) internal successors, (31773), 20174 states have internal predecessors, (31773), 1191 states have call successors, (1191), 384 states have call predecessors, (1191), 448 states have return successors, (2048), 1254 states have call predecessors, (2048), 1191 states have call successors, (2048) [2021-12-06 21:09:40,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21749 states to 21749 states and 35012 transitions. [2021-12-06 21:09:40,097 INFO L78 Accepts]: Start accepts. Automaton has 21749 states and 35012 transitions. Word has length 156 [2021-12-06 21:09:40,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:09:40,097 INFO L470 AbstractCegarLoop]: Abstraction has 21749 states and 35012 transitions. [2021-12-06 21:09:40,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:40,098 INFO L276 IsEmpty]: Start isEmpty. Operand 21749 states and 35012 transitions. [2021-12-06 21:09:40,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 21:09:40,105 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:09:40,105 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:09:40,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 21:09:40,105 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:09:40,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:40,106 INFO L85 PathProgramCache]: Analyzing trace with hash -568092299, now seen corresponding path program 1 times [2021-12-06 21:09:40,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:40,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050739794] [2021-12-06 21:09:40,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:40,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:40,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:09:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:40,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:09:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:40,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 21:09:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:40,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:09:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:40,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 21:09:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:40,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:09:40,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:09:40,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050739794] [2021-12-06 21:09:40,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050739794] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:09:40,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:09:40,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:09:40,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548451315] [2021-12-06 21:09:40,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:09:40,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:09:40,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:09:40,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:09:40,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:09:40,206 INFO L87 Difference]: Start difference. First operand 21749 states and 35012 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:46,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:09:46,987 INFO L93 Difference]: Finished difference Result 81635 states and 130578 transitions. [2021-12-06 21:09:46,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 21:09:46,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-06 21:09:46,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:09:47,134 INFO L225 Difference]: With dead ends: 81635 [2021-12-06 21:09:47,134 INFO L226 Difference]: Without dead ends: 62027 [2021-12-06 21:09:47,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 21:09:47,180 INFO L933 BasicCegarLoop]: 4922 mSDtfsCounter, 5332 mSDsluCounter, 17507 mSDsCounter, 0 mSdLazyCounter, 2984 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5348 SdHoareTripleChecker+Valid, 22429 SdHoareTripleChecker+Invalid, 3071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 21:09:47,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5348 Valid, 22429 Invalid, 3071 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [87 Valid, 2984 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 21:09:47,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62027 states. [2021-12-06 21:09:49,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62027 to 40965. [2021-12-06 21:09:49,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40965 states, 37756 states have (on average 1.5651287212628457) internal successors, (59093), 37886 states have internal predecessors, (59093), 2311 states have call successors, (2311), 768 states have call predecessors, (2311), 896 states have return successors, (4754), 2438 states have call predecessors, (4754), 2311 states have call successors, (4754) [2021-12-06 21:09:49,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40965 states to 40965 states and 66158 transitions. [2021-12-06 21:09:49,712 INFO L78 Accepts]: Start accepts. Automaton has 40965 states and 66158 transitions. Word has length 156 [2021-12-06 21:09:49,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:09:49,712 INFO L470 AbstractCegarLoop]: Abstraction has 40965 states and 66158 transitions. [2021-12-06 21:09:49,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:09:49,712 INFO L276 IsEmpty]: Start isEmpty. Operand 40965 states and 66158 transitions. [2021-12-06 21:09:49,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 21:09:49,725 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:09:49,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:09:49,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 21:09:49,725 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:09:49,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:49,726 INFO L85 PathProgramCache]: Analyzing trace with hash 293741303, now seen corresponding path program 1 times [2021-12-06 21:09:49,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:49,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277637254] [2021-12-06 21:09:49,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:49,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:49,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:09:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:49,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:09:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:49,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 21:09:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:49,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:09:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:49,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 21:09:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:09:49,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:09:49,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277637254] [2021-12-06 21:09:49,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277637254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:09:49,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:09:49,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:09:49,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830933549] [2021-12-06 21:09:49,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:09:49,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:09:49,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:09:49,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:09:49,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:09:49,822 INFO L87 Difference]: Start difference. First operand 40965 states and 66158 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:10:01,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:10:01,184 INFO L93 Difference]: Finished difference Result 157843 states and 254722 transitions. [2021-12-06 21:10:01,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 21:10:01,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-06 21:10:01,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:10:01,567 INFO L225 Difference]: With dead ends: 157843 [2021-12-06 21:10:01,567 INFO L226 Difference]: Without dead ends: 119019 [2021-12-06 21:10:01,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 21:10:01,684 INFO L933 BasicCegarLoop]: 4762 mSDtfsCounter, 5571 mSDsluCounter, 17510 mSDsCounter, 0 mSdLazyCounter, 2518 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5599 SdHoareTripleChecker+Valid, 22272 SdHoareTripleChecker+Invalid, 2608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:10:01,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5599 Valid, 22272 Invalid, 2608 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 2518 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 21:10:01,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119019 states. [2021-12-06 21:10:06,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119019 to 79653. [2021-12-06 21:10:06,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79653 states, 73372 states have (on average 1.5579376328844792) internal successors, (114309), 73630 states have internal predecessors, (114309), 4487 states have call successors, (4487), 1536 states have call predecessors, (4487), 1792 states have return successors, (11560), 4742 states have call predecessors, (11560), 4487 states have call successors, (11560) [2021-12-06 21:10:06,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79653 states to 79653 states and 130356 transitions. [2021-12-06 21:10:06,865 INFO L78 Accepts]: Start accepts. Automaton has 79653 states and 130356 transitions. Word has length 156 [2021-12-06 21:10:06,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:10:06,865 INFO L470 AbstractCegarLoop]: Abstraction has 79653 states and 130356 transitions. [2021-12-06 21:10:06,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:10:06,865 INFO L276 IsEmpty]: Start isEmpty. Operand 79653 states and 130356 transitions. [2021-12-06 21:10:06,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 21:10:06,889 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:10:06,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:10:06,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 21:10:06,889 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:10:06,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:10:06,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1756667595, now seen corresponding path program 1 times [2021-12-06 21:10:06,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:10:06,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962901726] [2021-12-06 21:10:06,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:10:06,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:10:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:10:06,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:10:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:10:06,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:10:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:10:06,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 21:10:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:10:06,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:10:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:10:06,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 21:10:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:10:06,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:10:06,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:10:06,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962901726] [2021-12-06 21:10:06,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962901726] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:10:06,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:10:06,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:10:06,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140738758] [2021-12-06 21:10:06,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:10:06,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:10:06,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:10:06,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:10:06,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:10:06,983 INFO L87 Difference]: Start difference. First operand 79653 states and 130356 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:10:28,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:10:28,093 INFO L93 Difference]: Finished difference Result 308723 states and 506474 transitions. [2021-12-06 21:10:28,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 21:10:28,094 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-06 21:10:28,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:10:28,876 INFO L225 Difference]: With dead ends: 308723 [2021-12-06 21:10:28,876 INFO L226 Difference]: Without dead ends: 231211 [2021-12-06 21:10:29,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 21:10:29,092 INFO L933 BasicCegarLoop]: 4757 mSDtfsCounter, 5533 mSDsluCounter, 17510 mSDsCounter, 0 mSdLazyCounter, 2510 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5561 SdHoareTripleChecker+Valid, 22267 SdHoareTripleChecker+Invalid, 2600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 21:10:29,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5561 Valid, 22267 Invalid, 2600 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 2510 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 21:10:29,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231211 states. [2021-12-06 21:10:39,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231211 to 156901. [2021-12-06 21:10:39,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156901 states, 144604 states have (on average 1.5550676329838733) internal successors, (224869), 145118 states have internal predecessors, (224869), 8711 states have call successors, (8711), 3072 states have call predecessors, (8711), 3584 states have return successors, (29418), 9222 states have call predecessors, (29418), 8711 states have call successors, (29418) [2021-12-06 21:10:40,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156901 states to 156901 states and 262998 transitions. [2021-12-06 21:10:40,343 INFO L78 Accepts]: Start accepts. Automaton has 156901 states and 262998 transitions. Word has length 156 [2021-12-06 21:10:40,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:10:40,343 INFO L470 AbstractCegarLoop]: Abstraction has 156901 states and 262998 transitions. [2021-12-06 21:10:40,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:10:40,343 INFO L276 IsEmpty]: Start isEmpty. Operand 156901 states and 262998 transitions. [2021-12-06 21:10:40,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 21:10:40,394 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:10:40,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:10:40,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 21:10:40,394 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:10:40,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:10:40,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1268620489, now seen corresponding path program 1 times [2021-12-06 21:10:40,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:10:40,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298701392] [2021-12-06 21:10:40,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:10:40,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:10:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:10:40,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:10:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:10:40,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:10:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:10:40,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 21:10:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:10:40,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:10:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:10:40,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 21:10:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:10:40,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:10:40,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:10:40,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298701392] [2021-12-06 21:10:40,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298701392] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:10:40,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:10:40,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:10:40,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451229280] [2021-12-06 21:10:40,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:10:40,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:10:40,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:10:40,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:10:40,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:10:40,492 INFO L87 Difference]: Start difference. First operand 156901 states and 262998 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:11:21,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:11:21,750 INFO L93 Difference]: Finished difference Result 605747 states and 1019922 transitions. [2021-12-06 21:11:21,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 21:11:21,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-06 21:11:21,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:11:23,562 INFO L225 Difference]: With dead ends: 605747 [2021-12-06 21:11:23,562 INFO L226 Difference]: Without dead ends: 450987 [2021-12-06 21:11:24,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 21:11:24,137 INFO L933 BasicCegarLoop]: 4858 mSDtfsCounter, 5309 mSDsluCounter, 17510 mSDsCounter, 0 mSdLazyCounter, 2853 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5325 SdHoareTripleChecker+Valid, 22368 SdHoareTripleChecker+Invalid, 2943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 21:11:24,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5325 Valid, 22368 Invalid, 2943 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 2853 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 21:11:24,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450987 states. [2021-12-06 21:11:46,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450987 to 311141. [2021-12-06 21:11:46,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311141 states, 287068 states have (on average 1.5544923154095893) internal successors, (446245), 288094 states have internal predecessors, (446245), 16903 states have call successors, (16903), 6144 states have call predecessors, (16903), 7168 states have return successors, (78000), 17926 states have call predecessors, (78000), 16903 states have call successors, (78000) [2021-12-06 21:11:48,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311141 states to 311141 states and 541148 transitions. [2021-12-06 21:11:48,063 INFO L78 Accepts]: Start accepts. Automaton has 311141 states and 541148 transitions. Word has length 156 [2021-12-06 21:11:48,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:11:48,063 INFO L470 AbstractCegarLoop]: Abstraction has 311141 states and 541148 transitions. [2021-12-06 21:11:48,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:11:48,063 INFO L276 IsEmpty]: Start isEmpty. Operand 311141 states and 541148 transitions. [2021-12-06 21:11:48,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 21:11:48,158 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:11:48,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:11:48,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 21:11:48,158 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:11:48,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:11:48,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1933711605, now seen corresponding path program 1 times [2021-12-06 21:11:48,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:11:48,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343300143] [2021-12-06 21:11:48,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:11:48,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:11:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:11:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:11:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 21:11:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:11:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 21:11:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:11:48,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:11:48,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343300143] [2021-12-06 21:11:48,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343300143] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:11:48,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:11:48,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:11:48,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252203903] [2021-12-06 21:11:48,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:11:48,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:11:48,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:11:48,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:11:48,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:11:48,247 INFO L87 Difference]: Start difference. First operand 311141 states and 541148 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:13:08,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:13:08,512 INFO L93 Difference]: Finished difference Result 1174963 states and 2061674 transitions. [2021-12-06 21:13:08,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 21:13:08,513 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-06 21:13:08,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:13:12,751 INFO L225 Difference]: With dead ends: 1174963 [2021-12-06 21:13:12,751 INFO L226 Difference]: Without dead ends: 865963 [2021-12-06 21:13:14,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 21:13:14,181 INFO L933 BasicCegarLoop]: 4817 mSDtfsCounter, 5288 mSDsluCounter, 17510 mSDsCounter, 0 mSdLazyCounter, 2765 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5304 SdHoareTripleChecker+Valid, 22327 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 21:13:14,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5304 Valid, 22327 Invalid, 2855 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 2765 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 21:13:14,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865963 states. [2021-12-06 21:14:02,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865963 to 620133. [2021-12-06 21:14:02,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620133 states, 573020 states have (on average 1.5558915919165126) internal successors, (891557), 575070 states have internal predecessors, (891557), 32775 states have call successors, (32775), 12288 states have call predecessors, (32775), 14336 states have return successors, (214018), 34822 states have call predecessors, (214018), 32775 states have call successors, (214018) [2021-12-06 21:14:05,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620133 states to 620133 states and 1138350 transitions. [2021-12-06 21:14:05,866 INFO L78 Accepts]: Start accepts. Automaton has 620133 states and 1138350 transitions. Word has length 156 [2021-12-06 21:14:05,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:14:05,867 INFO L470 AbstractCegarLoop]: Abstraction has 620133 states and 1138350 transitions. [2021-12-06 21:14:05,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:14:05,867 INFO L276 IsEmpty]: Start isEmpty. Operand 620133 states and 1138350 transitions. [2021-12-06 21:14:06,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 21:14:06,190 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:14:06,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:14:06,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 21:14:06,190 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:14:06,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:14:06,190 INFO L85 PathProgramCache]: Analyzing trace with hash 91235891, now seen corresponding path program 1 times [2021-12-06 21:14:06,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:14:06,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847883913] [2021-12-06 21:14:06,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:14:06,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:14:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:14:06,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:14:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:14:06,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:14:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:14:06,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 21:14:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:14:06,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:14:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:14:06,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 21:14:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:14:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:14:06,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:14:06,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847883913] [2021-12-06 21:14:06,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847883913] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:14:06,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:14:06,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:14:06,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67514997] [2021-12-06 21:14:06,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:14:06,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:14:06,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:14:06,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:14:06,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:14:06,294 INFO L87 Difference]: Start difference. First operand 620133 states and 1138350 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:15:19,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:15:19,978 INFO L93 Difference]: Finished difference Result 1415325 states and 2726415 transitions. [2021-12-06 21:15:19,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:15:19,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-06 21:15:19,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:15:24,351 INFO L225 Difference]: With dead ends: 1415325 [2021-12-06 21:15:24,351 INFO L226 Difference]: Without dead ends: 797331 [2021-12-06 21:15:26,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:15:26,469 INFO L933 BasicCegarLoop]: 4451 mSDtfsCounter, 4925 mSDsluCounter, 16633 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4943 SdHoareTripleChecker+Valid, 21084 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:15:26,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4943 Valid, 21084 Invalid, 1227 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 21:15:26,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797331 states. [2021-12-06 21:16:26,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797331 to 620133. [2021-12-06 21:16:27,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620133 states, 573020 states have (on average 1.5523158004956197) internal successors, (889508), 575070 states have internal predecessors, (889508), 32775 states have call successors, (32775), 12288 states have call predecessors, (32775), 14336 states have return successors, (214018), 34822 states have call predecessors, (214018), 32775 states have call successors, (214018) [2021-12-06 21:16:30,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620133 states to 620133 states and 1136301 transitions. [2021-12-06 21:16:30,484 INFO L78 Accepts]: Start accepts. Automaton has 620133 states and 1136301 transitions. Word has length 156 [2021-12-06 21:16:30,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:16:30,485 INFO L470 AbstractCegarLoop]: Abstraction has 620133 states and 1136301 transitions. [2021-12-06 21:16:30,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:16:30,485 INFO L276 IsEmpty]: Start isEmpty. Operand 620133 states and 1136301 transitions. [2021-12-06 21:16:30,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 21:16:30,689 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:16:30,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:16:30,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 21:16:30,690 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:16:30,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:16:30,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1630766795, now seen corresponding path program 1 times [2021-12-06 21:16:30,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:16:30,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882842274] [2021-12-06 21:16:30,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:16:30,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:16:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:16:30,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:16:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:16:30,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:16:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:16:30,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 21:16:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:16:30,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:16:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:16:30,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 21:16:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:16:30,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:16:30,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:16:30,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882842274] [2021-12-06 21:16:30,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882842274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:16:30,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:16:30,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:16:30,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688684701] [2021-12-06 21:16:30,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:16:30,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:16:30,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:16:30,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:16:30,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:16:30,794 INFO L87 Difference]: Start difference. First operand 620133 states and 1136301 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 21:19:13,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:19:13,515 INFO L93 Difference]: Finished difference Result 2280115 states and 4241712 transitions. [2021-12-06 21:19:13,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 21:19:13,515 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-06 21:19:13,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:19:24,006 INFO L225 Difference]: With dead ends: 2280115 [2021-12-06 21:19:24,007 INFO L226 Difference]: Without dead ends: 1662123 [2021-12-06 21:19:26,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 21:19:26,942 INFO L933 BasicCegarLoop]: 4774 mSDtfsCounter, 5265 mSDsluCounter, 17510 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5281 SdHoareTripleChecker+Valid, 22284 SdHoareTripleChecker+Invalid, 2757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:19:26,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5281 Valid, 22284 Invalid, 2757 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 21:19:27,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662123 states.