./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem04_label46.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c4f79-19ba-4c64-998b-499e41038c22/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c4f79-19ba-4c64-998b-499e41038c22/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c4f79-19ba-4c64-998b-499e41038c22/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c4f79-19ba-4c64-998b-499e41038c22/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem04_label46.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c4f79-19ba-4c64-998b-499e41038c22/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c4f79-19ba-4c64-998b-499e41038c22/bin/uautomizer-vX5HgA9Q3a --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 8c45ecc27ad3f2665e38b5f15002da02b7320f8016c4345de558c50154c3c1cd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 16:55:25,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:55:25,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:55:25,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:55:25,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:55:25,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:55:25,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:55:25,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:55:25,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:55:25,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:55:25,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:55:25,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:55:25,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:55:25,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:55:25,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:55:25,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:55:25,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:55:25,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:55:25,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:55:25,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:55:25,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:55:25,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:55:25,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:55:25,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:55:25,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:55:25,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:55:25,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:55:25,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:55:25,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:55:25,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:55:25,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:55:25,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:55:25,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:55:25,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:55:25,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:55:25,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:55:25,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:55:25,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:55:25,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:55:25,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:55:25,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:55:25,219 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c4f79-19ba-4c64-998b-499e41038c22/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:55:25,262 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:55:25,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:55:25,264 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:55:25,264 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:55:25,265 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:55:25,266 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:55:25,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:55:25,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:55:25,267 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:55:25,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:55:25,269 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:55:25,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:55:25,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:55:25,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:55:25,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:55:25,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:55:25,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:55:25,271 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:55:25,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:55:25,272 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:55:25,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:55:25,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:55:25,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:55:25,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:55:25,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:55:25,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:55:25,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:55:25,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:55:25,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:55:25,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:55:25,277 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:55:25,277 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:55:25,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:55:25,278 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_b14c4f79-19ba-4c64-998b-499e41038c22/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c4f79-19ba-4c64-998b-499e41038c22/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c45ecc27ad3f2665e38b5f15002da02b7320f8016c4345de558c50154c3c1cd [2022-11-21 16:55:25,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:55:25,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:55:25,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:55:25,673 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:55:25,673 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:55:25,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c4f79-19ba-4c64-998b-499e41038c22/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/eca-rers2012/Problem04_label46.c [2022-11-21 16:55:28,808 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:55:29,356 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:55:29,357 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c4f79-19ba-4c64-998b-499e41038c22/sv-benchmarks/c/eca-rers2012/Problem04_label46.c [2022-11-21 16:55:29,393 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c4f79-19ba-4c64-998b-499e41038c22/bin/uautomizer-vX5HgA9Q3a/data/8f7aac028/3c179a94470e4abcb24a86a5d511a08b/FLAGf22a4f8b3 [2022-11-21 16:55:29,409 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c4f79-19ba-4c64-998b-499e41038c22/bin/uautomizer-vX5HgA9Q3a/data/8f7aac028/3c179a94470e4abcb24a86a5d511a08b [2022-11-21 16:55:29,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:55:29,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:55:29,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:55:29,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:55:29,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:55:29,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:55:29" (1/1) ... [2022-11-21 16:55:29,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11d9af00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:29, skipping insertion in model container [2022-11-21 16:55:29,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:55:29" (1/1) ... [2022-11-21 16:55:29,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:55:29,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:55:31,052 WARN L237 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_b14c4f79-19ba-4c64-998b-499e41038c22/sv-benchmarks/c/eca-rers2012/Problem04_label46.c[181280,181293] [2022-11-21 16:55:31,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:55:31,097 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:55:31,760 WARN L237 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_b14c4f79-19ba-4c64-998b-499e41038c22/sv-benchmarks/c/eca-rers2012/Problem04_label46.c[181280,181293] [2022-11-21 16:55:31,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:55:31,795 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:55:31,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:31 WrapperNode [2022-11-21 16:55:31,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:55:31,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:55:31,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:55:31,798 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:55:31,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:31" (1/1) ... [2022-11-21 16:55:31,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:31" (1/1) ... [2022-11-21 16:55:32,140 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5572 [2022-11-21 16:55:32,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:55:32,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:55:32,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:55:32,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:55:32,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:31" (1/1) ... [2022-11-21 16:55:32,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:31" (1/1) ... [2022-11-21 16:55:32,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:31" (1/1) ... [2022-11-21 16:55:32,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:31" (1/1) ... [2022-11-21 16:55:32,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:31" (1/1) ... [2022-11-21 16:55:32,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:31" (1/1) ... [2022-11-21 16:55:32,320 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:31" (1/1) ... [2022-11-21 16:55:32,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:31" (1/1) ... [2022-11-21 16:55:32,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:55:32,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:55:32,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:55:32,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:55:32,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:31" (1/1) ... [2022-11-21 16:55:32,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:55:32,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c4f79-19ba-4c64-998b-499e41038c22/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:55:32,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c4f79-19ba-4c64-998b-499e41038c22/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:55:32,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c4f79-19ba-4c64-998b-499e41038c22/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:55:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:55:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:55:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:55:32,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:55:32,603 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:55:32,605 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:55:37,986 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:55:38,015 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:55:38,016 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 16:55:38,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:55:38 BoogieIcfgContainer [2022-11-21 16:55:38,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:55:38,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:55:38,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:55:38,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:55:38,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:55:29" (1/3) ... [2022-11-21 16:55:38,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7f78ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:55:38, skipping insertion in model container [2022-11-21 16:55:38,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:31" (2/3) ... [2022-11-21 16:55:38,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7f78ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:55:38, skipping insertion in model container [2022-11-21 16:55:38,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:55:38" (3/3) ... [2022-11-21 16:55:38,034 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label46.c [2022-11-21 16:55:38,055 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:55:38,055 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:55:38,159 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:55:38,169 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2daef9fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:55:38,169 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:55:38,182 INFO L276 IsEmpty]: Start isEmpty. Operand has 885 states, 883 states have (on average 1.9229898074745186) internal successors, (1698), 884 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:38,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2022-11-21 16:55:38,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:55:38,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:55:38,258 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:55:38,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:38,267 INFO L85 PathProgramCache]: Analyzing trace with hash -622214451, now seen corresponding path program 1 times [2022-11-21 16:55:38,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:38,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069360715] [2022-11-21 16:55:38,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:38,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:55:48,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:48,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069360715] [2022-11-21 16:55:48,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069360715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:55:48,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:55:48,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 16:55:48,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783763983] [2022-11-21 16:55:48,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:55:48,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:55:48,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:48,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:55:48,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:55:48,121 INFO L87 Difference]: Start difference. First operand has 885 states, 883 states have (on average 1.9229898074745186) internal successors, (1698), 884 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 12 states, 12 states have (on average 66.0) internal successors, (792), 11 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:55,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:55:55,931 INFO L93 Difference]: Finished difference Result 2490 states and 4835 transitions. [2022-11-21 16:55:55,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:55:55,934 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 66.0) internal successors, (792), 11 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 792 [2022-11-21 16:55:55,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:55:55,968 INFO L225 Difference]: With dead ends: 2490 [2022-11-21 16:55:55,968 INFO L226 Difference]: Without dead ends: 1541 [2022-11-21 16:55:55,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:55:55,980 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 2108 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 6526 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 7237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 6526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:55:55,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 964 Invalid, 7237 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [711 Valid, 6526 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-21 16:55:56,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2022-11-21 16:55:56,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1541. [2022-11-21 16:55:56,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1540 states have (on average 1.490909090909091) internal successors, (2296), 1540 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:56,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2296 transitions. [2022-11-21 16:55:56,102 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2296 transitions. Word has length 792 [2022-11-21 16:55:56,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:55:56,104 INFO L495 AbstractCegarLoop]: Abstraction has 1541 states and 2296 transitions. [2022-11-21 16:55:56,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 66.0) internal successors, (792), 11 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:55:56,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2296 transitions. [2022-11-21 16:55:56,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2022-11-21 16:55:56,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:55:56,131 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:55:56,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:55:56,132 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:55:56,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:56,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1715982638, now seen corresponding path program 1 times [2022-11-21 16:55:56,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:56,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286189415] [2022-11-21 16:55:56,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:56,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:02,791 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:02,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:02,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286189415] [2022-11-21 16:56:02,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286189415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:02,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:02,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 16:56:02,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940340456] [2022-11-21 16:56:02,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:02,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 16:56:02,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:02,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 16:56:02,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:56:02,797 INFO L87 Difference]: Start difference. First operand 1541 states and 2296 transitions. Second operand has 13 states, 13 states have (on average 62.07692307692308) internal successors, (807), 12 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:12,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:12,784 INFO L93 Difference]: Finished difference Result 3865 states and 6804 transitions. [2022-11-21 16:56:12,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:56:12,786 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 62.07692307692308) internal successors, (807), 12 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 807 [2022-11-21 16:56:12,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:12,798 INFO L225 Difference]: With dead ends: 3865 [2022-11-21 16:56:12,798 INFO L226 Difference]: Without dead ends: 3045 [2022-11-21 16:56:12,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=167, Unknown=0, NotChecked=0, Total=272 [2022-11-21 16:56:12,802 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 2558 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 10065 mSolverCounterSat, 1410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2558 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 11475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1410 IncrementalHoareTripleChecker+Valid, 10065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:12,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2558 Valid, 910 Invalid, 11475 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1410 Valid, 10065 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-11-21 16:56:12,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2022-11-21 16:56:12,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 3045. [2022-11-21 16:56:12,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3045 states, 3044 states have (on average 1.2598554533508541) internal successors, (3835), 3044 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:12,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3045 states to 3045 states and 3835 transitions. [2022-11-21 16:56:12,876 INFO L78 Accepts]: Start accepts. Automaton has 3045 states and 3835 transitions. Word has length 807 [2022-11-21 16:56:12,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:12,878 INFO L495 AbstractCegarLoop]: Abstraction has 3045 states and 3835 transitions. [2022-11-21 16:56:12,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 62.07692307692308) internal successors, (807), 12 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:12,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3045 states and 3835 transitions. [2022-11-21 16:56:12,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2022-11-21 16:56:12,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:12,911 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:12,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:56:12,912 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:56:12,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:12,913 INFO L85 PathProgramCache]: Analyzing trace with hash 258140698, now seen corresponding path program 1 times [2022-11-21 16:56:12,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:12,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571728239] [2022-11-21 16:56:12,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:12,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:13,822 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:13,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:13,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571728239] [2022-11-21 16:56:13,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571728239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:13,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:13,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:56:13,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72636869] [2022-11-21 16:56:13,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:13,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:56:13,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:13,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:56:13,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:56:13,829 INFO L87 Difference]: Start difference. First operand 3045 states and 3835 transitions. Second operand has 3 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:17,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:17,874 INFO L93 Difference]: Finished difference Result 6187 states and 8513 transitions. [2022-11-21 16:56:17,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:56:17,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 814 [2022-11-21 16:56:17,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:17,891 INFO L225 Difference]: With dead ends: 6187 [2022-11-21 16:56:17,891 INFO L226 Difference]: Without dead ends: 3863 [2022-11-21 16:56:17,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:56:17,904 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 78 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2296 mSolverCounterSat, 1177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 3473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1177 IncrementalHoareTripleChecker+Valid, 2296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:17,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 984 Invalid, 3473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1177 Valid, 2296 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-21 16:56:17,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3863 states. [2022-11-21 16:56:17,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3863 to 3863. [2022-11-21 16:56:17,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3863 states, 3862 states have (on average 1.3353184878301398) internal successors, (5157), 3862 states have internal predecessors, (5157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:17,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3863 states to 3863 states and 5157 transitions. [2022-11-21 16:56:17,997 INFO L78 Accepts]: Start accepts. Automaton has 3863 states and 5157 transitions. Word has length 814 [2022-11-21 16:56:17,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:17,998 INFO L495 AbstractCegarLoop]: Abstraction has 3863 states and 5157 transitions. [2022-11-21 16:56:17,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:17,999 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states and 5157 transitions. [2022-11-21 16:56:18,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2022-11-21 16:56:18,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:18,011 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:18,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:56:18,011 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:56:18,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:18,013 INFO L85 PathProgramCache]: Analyzing trace with hash 402448730, now seen corresponding path program 1 times [2022-11-21 16:56:18,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:18,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810155070] [2022-11-21 16:56:18,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:18,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:18,651 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:56:18,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:18,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810155070] [2022-11-21 16:56:18,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810155070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:18,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:18,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:56:18,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949885258] [2022-11-21 16:56:18,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:18,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:56:18,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:18,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:56:18,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:56:18,656 INFO L87 Difference]: Start difference. First operand 3863 states and 5157 transitions. Second operand has 3 states, 3 states have (on average 272.0) internal successors, (816), 2 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:22,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:22,262 INFO L93 Difference]: Finished difference Result 9459 states and 13327 transitions. [2022-11-21 16:56:22,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:56:22,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 272.0) internal successors, (816), 2 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 819 [2022-11-21 16:56:22,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:22,286 INFO L225 Difference]: With dead ends: 9459 [2022-11-21 16:56:22,287 INFO L226 Difference]: Without dead ends: 6317 [2022-11-21 16:56:22,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:56:22,292 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 900 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 1086 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 3383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1086 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:22,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 386 Invalid, 3383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1086 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-21 16:56:22,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6317 states. [2022-11-21 16:56:22,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6317 to 6317. [2022-11-21 16:56:22,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6317 states, 6316 states have (on average 1.3590880303989867) internal successors, (8584), 6316 states have internal predecessors, (8584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:22,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6317 states to 6317 states and 8584 transitions. [2022-11-21 16:56:22,436 INFO L78 Accepts]: Start accepts. Automaton has 6317 states and 8584 transitions. Word has length 819 [2022-11-21 16:56:22,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:22,437 INFO L495 AbstractCegarLoop]: Abstraction has 6317 states and 8584 transitions. [2022-11-21 16:56:22,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.0) internal successors, (816), 2 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:22,438 INFO L276 IsEmpty]: Start isEmpty. Operand 6317 states and 8584 transitions. [2022-11-21 16:56:22,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2022-11-21 16:56:22,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:22,454 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:22,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:56:22,455 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:56:22,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:22,456 INFO L85 PathProgramCache]: Analyzing trace with hash 901817538, now seen corresponding path program 1 times [2022-11-21 16:56:22,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:22,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505519552] [2022-11-21 16:56:22,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:22,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:23,075 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 16:56:23,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:23,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505519552] [2022-11-21 16:56:23,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505519552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:23,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:23,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:56:23,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268151553] [2022-11-21 16:56:23,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:23,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:56:23,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:23,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:56:23,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:56:23,085 INFO L87 Difference]: Start difference. First operand 6317 states and 8584 transitions. Second operand has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 2 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:26,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:26,794 INFO L93 Difference]: Finished difference Result 15185 states and 21924 transitions. [2022-11-21 16:56:26,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:56:26,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 2 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 838 [2022-11-21 16:56:26,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:26,826 INFO L225 Difference]: With dead ends: 15185 [2022-11-21 16:56:26,826 INFO L226 Difference]: Without dead ends: 9589 [2022-11-21 16:56:26,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:56:26,833 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 877 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 1077 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1077 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:26,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 625 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1077 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-21 16:56:26,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9589 states. [2022-11-21 16:56:27,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9589 to 9589. [2022-11-21 16:56:27,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9589 states, 9588 states have (on average 1.3235294117647058) internal successors, (12690), 9588 states have internal predecessors, (12690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:27,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9589 states to 9589 states and 12690 transitions. [2022-11-21 16:56:27,036 INFO L78 Accepts]: Start accepts. Automaton has 9589 states and 12690 transitions. Word has length 838 [2022-11-21 16:56:27,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:27,037 INFO L495 AbstractCegarLoop]: Abstraction has 9589 states and 12690 transitions. [2022-11-21 16:56:27,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 2 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:27,039 INFO L276 IsEmpty]: Start isEmpty. Operand 9589 states and 12690 transitions. [2022-11-21 16:56:27,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 897 [2022-11-21 16:56:27,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:27,062 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:27,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:56:27,063 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:56:27,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:27,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1914683595, now seen corresponding path program 1 times [2022-11-21 16:56:27,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:27,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298820926] [2022-11-21 16:56:27,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:27,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:27,756 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-21 16:56:27,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:27,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298820926] [2022-11-21 16:56:27,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298820926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:27,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:27,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:56:27,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433372858] [2022-11-21 16:56:27,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:27,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:56:27,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:27,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:56:27,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:56:27,762 INFO L87 Difference]: Start difference. First operand 9589 states and 12690 transitions. Second operand has 3 states, 3 states have (on average 284.3333333333333) internal successors, (853), 2 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:31,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:31,459 INFO L93 Difference]: Finished difference Result 25001 states and 34242 transitions. [2022-11-21 16:56:31,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:56:31,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 284.3333333333333) internal successors, (853), 2 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 896 [2022-11-21 16:56:31,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:31,497 INFO L225 Difference]: With dead ends: 25001 [2022-11-21 16:56:31,498 INFO L226 Difference]: Without dead ends: 16133 [2022-11-21 16:56:31,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:56:31,507 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 787 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 3120 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 3462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 3120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:31,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 651 Invalid, 3462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 3120 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-21 16:56:31,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16133 states. [2022-11-21 16:56:31,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16133 to 16133. [2022-11-21 16:56:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16133 states, 16132 states have (on average 1.3406893131663773) internal successors, (21628), 16132 states have internal predecessors, (21628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:31,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16133 states to 16133 states and 21628 transitions. [2022-11-21 16:56:31,780 INFO L78 Accepts]: Start accepts. Automaton has 16133 states and 21628 transitions. Word has length 896 [2022-11-21 16:56:31,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:31,781 INFO L495 AbstractCegarLoop]: Abstraction has 16133 states and 21628 transitions. [2022-11-21 16:56:31,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.3333333333333) internal successors, (853), 2 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:31,782 INFO L276 IsEmpty]: Start isEmpty. Operand 16133 states and 21628 transitions. [2022-11-21 16:56:31,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2022-11-21 16:56:31,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:31,815 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:31,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:56:31,816 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:56:31,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:31,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1025340495, now seen corresponding path program 1 times [2022-11-21 16:56:31,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:31,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718115655] [2022-11-21 16:56:31,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:31,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:33,095 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-11-21 16:56:33,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:33,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718115655] [2022-11-21 16:56:33,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718115655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:33,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:33,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:56:33,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381466970] [2022-11-21 16:56:33,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:33,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:56:33,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:33,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:56:33,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:56:33,100 INFO L87 Difference]: Start difference. First operand 16133 states and 21628 transitions. Second operand has 4 states, 4 states have (on average 205.0) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:38,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:38,557 INFO L93 Difference]: Finished difference Result 38089 states and 51409 transitions. [2022-11-21 16:56:38,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:56:38,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 205.0) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 900 [2022-11-21 16:56:38,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:38,607 INFO L225 Difference]: With dead ends: 38089 [2022-11-21 16:56:38,607 INFO L226 Difference]: Without dead ends: 22677 [2022-11-21 16:56:38,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:56:38,626 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 1752 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 5107 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 5611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 5107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:38,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1752 Valid, 439 Invalid, 5611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 5107 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-21 16:56:38,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22677 states. [2022-11-21 16:56:38,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22677 to 22677. [2022-11-21 16:56:39,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22677 states, 22676 states have (on average 1.2691391779855354) internal successors, (28779), 22676 states have internal predecessors, (28779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:39,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22677 states to 22677 states and 28779 transitions. [2022-11-21 16:56:39,040 INFO L78 Accepts]: Start accepts. Automaton has 22677 states and 28779 transitions. Word has length 900 [2022-11-21 16:56:39,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:39,041 INFO L495 AbstractCegarLoop]: Abstraction has 22677 states and 28779 transitions. [2022-11-21 16:56:39,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 205.0) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:39,042 INFO L276 IsEmpty]: Start isEmpty. Operand 22677 states and 28779 transitions. [2022-11-21 16:56:39,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2022-11-21 16:56:39,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:39,082 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:39,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:56:39,082 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:56:39,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:39,083 INFO L85 PathProgramCache]: Analyzing trace with hash -606423603, now seen corresponding path program 1 times [2022-11-21 16:56:39,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:39,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984179044] [2022-11-21 16:56:39,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:39,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:39,697 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-21 16:56:39,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:39,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984179044] [2022-11-21 16:56:39,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984179044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:39,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:39,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:56:39,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753581913] [2022-11-21 16:56:39,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:39,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:56:39,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:39,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:56:39,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:56:39,701 INFO L87 Difference]: Start difference. First operand 22677 states and 28779 transitions. Second operand has 3 states, 3 states have (on average 289.3333333333333) internal successors, (868), 3 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:43,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:43,612 INFO L93 Difference]: Finished difference Result 62629 states and 80591 transitions. [2022-11-21 16:56:43,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:56:43,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 289.3333333333333) internal successors, (868), 3 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 902 [2022-11-21 16:56:43,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:43,700 INFO L225 Difference]: With dead ends: 62629 [2022-11-21 16:56:43,700 INFO L226 Difference]: Without dead ends: 40673 [2022-11-21 16:56:43,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:56:43,728 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 801 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 919 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 3253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 919 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:43,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 735 Invalid, 3253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [919 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-21 16:56:43,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40673 states. [2022-11-21 16:56:44,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40673 to 40673. [2022-11-21 16:56:44,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40673 states, 40672 states have (on average 1.2593676239181746) internal successors, (51221), 40672 states have internal predecessors, (51221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:44,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40673 states to 40673 states and 51221 transitions. [2022-11-21 16:56:44,457 INFO L78 Accepts]: Start accepts. Automaton has 40673 states and 51221 transitions. Word has length 902 [2022-11-21 16:56:44,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:44,459 INFO L495 AbstractCegarLoop]: Abstraction has 40673 states and 51221 transitions. [2022-11-21 16:56:44,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.3333333333333) internal successors, (868), 3 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:44,460 INFO L276 IsEmpty]: Start isEmpty. Operand 40673 states and 51221 transitions. [2022-11-21 16:56:44,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 945 [2022-11-21 16:56:44,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:44,525 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:44,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:56:44,526 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:56:44,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:44,526 INFO L85 PathProgramCache]: Analyzing trace with hash 253224928, now seen corresponding path program 1 times [2022-11-21 16:56:44,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:44,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644910913] [2022-11-21 16:56:44,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:44,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:45,205 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-21 16:56:45,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:45,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644910913] [2022-11-21 16:56:45,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644910913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:45,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:45,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:56:45,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003937514] [2022-11-21 16:56:45,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:45,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:56:45,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:45,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:56:45,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:56:45,209 INFO L87 Difference]: Start difference. First operand 40673 states and 51221 transitions. Second operand has 3 states, 3 states have (on average 310.3333333333333) internal successors, (931), 3 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:48,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:48,880 INFO L93 Difference]: Finished difference Result 80625 states and 101716 transitions. [2022-11-21 16:56:48,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:56:48,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 310.3333333333333) internal successors, (931), 3 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 944 [2022-11-21 16:56:48,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:48,938 INFO L225 Difference]: With dead ends: 80625 [2022-11-21 16:56:48,939 INFO L226 Difference]: Without dead ends: 40673 [2022-11-21 16:56:48,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:56:48,961 INFO L413 NwaCegarLoop]: 1054 mSDtfsCounter, 840 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2892 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 3213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 2892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:48,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1062 Invalid, 3213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 2892 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-21 16:56:49,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40673 states. [2022-11-21 16:56:49,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40673 to 40673. [2022-11-21 16:56:49,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40673 states, 40672 states have (on average 1.2280930369787568) internal successors, (49949), 40672 states have internal predecessors, (49949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:49,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40673 states to 40673 states and 49949 transitions. [2022-11-21 16:56:49,525 INFO L78 Accepts]: Start accepts. Automaton has 40673 states and 49949 transitions. Word has length 944 [2022-11-21 16:56:49,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:49,530 INFO L495 AbstractCegarLoop]: Abstraction has 40673 states and 49949 transitions. [2022-11-21 16:56:49,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.3333333333333) internal successors, (931), 3 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:49,530 INFO L276 IsEmpty]: Start isEmpty. Operand 40673 states and 49949 transitions. [2022-11-21 16:56:49,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2022-11-21 16:56:49,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:49,583 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:49,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:56:49,583 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:56:49,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:49,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1456878762, now seen corresponding path program 1 times [2022-11-21 16:56:49,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:49,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846794622] [2022-11-21 16:56:49,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:49,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:50,457 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-21 16:56:50,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:50,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846794622] [2022-11-21 16:56:50,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846794622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:50,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:50,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:56:50,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525085596] [2022-11-21 16:56:50,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:50,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:56:50,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:50,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:56:50,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:56:50,461 INFO L87 Difference]: Start difference. First operand 40673 states and 49949 transitions. Second operand has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:54,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:54,395 INFO L93 Difference]: Finished difference Result 80625 states and 99172 transitions. [2022-11-21 16:56:54,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:56:54,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 977 [2022-11-21 16:56:54,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:54,435 INFO L225 Difference]: With dead ends: 80625 [2022-11-21 16:56:54,435 INFO L226 Difference]: Without dead ends: 40673 [2022-11-21 16:56:54,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:56:54,462 INFO L413 NwaCegarLoop]: 1397 mSDtfsCounter, 833 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 1006 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 2981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1006 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:54,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 1405 Invalid, 2981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1006 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-21 16:56:54,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40673 states. [2022-11-21 16:56:54,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40673 to 40673. [2022-11-21 16:56:54,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40673 states, 40672 states have (on average 1.1333841463414633) internal successors, (46097), 40672 states have internal predecessors, (46097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:54,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40673 states to 40673 states and 46097 transitions. [2022-11-21 16:56:54,973 INFO L78 Accepts]: Start accepts. Automaton has 40673 states and 46097 transitions. Word has length 977 [2022-11-21 16:56:54,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:54,974 INFO L495 AbstractCegarLoop]: Abstraction has 40673 states and 46097 transitions. [2022-11-21 16:56:54,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:54,974 INFO L276 IsEmpty]: Start isEmpty. Operand 40673 states and 46097 transitions. [2022-11-21 16:56:55,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2022-11-21 16:56:55,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:55,028 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:55,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:56:55,029 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:56:55,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:55,030 INFO L85 PathProgramCache]: Analyzing trace with hash 736910199, now seen corresponding path program 1 times [2022-11-21 16:56:55,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:55,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054797047] [2022-11-21 16:56:55,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:55,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:55,788 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-21 16:56:55,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:55,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054797047] [2022-11-21 16:56:55,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054797047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:55,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:55,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:56:55,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298271618] [2022-11-21 16:56:55,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:55,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:56:55,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:55,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:56:55,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:56:55,792 INFO L87 Difference]: Start difference. First operand 40673 states and 46097 transitions. Second operand has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 2 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:59,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:59,883 INFO L93 Difference]: Finished difference Result 109255 states and 124901 transitions. [2022-11-21 16:56:59,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:56:59,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 2 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 983 [2022-11-21 16:56:59,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:59,971 INFO L225 Difference]: With dead ends: 109255 [2022-11-21 16:56:59,971 INFO L226 Difference]: Without dead ends: 66031 [2022-11-21 16:57:00,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:57:00,003 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 971 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 1063 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 3128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1063 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:00,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 474 Invalid, 3128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1063 Valid, 2065 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-21 16:57:00,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66031 states. [2022-11-21 16:57:00,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66031 to 55397. [2022-11-21 16:57:00,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55397 states, 55396 states have (on average 1.1318687269838978) internal successors, (62701), 55396 states have internal predecessors, (62701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:01,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55397 states to 55397 states and 62701 transitions. [2022-11-21 16:57:01,052 INFO L78 Accepts]: Start accepts. Automaton has 55397 states and 62701 transitions. Word has length 983 [2022-11-21 16:57:01,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:01,052 INFO L495 AbstractCegarLoop]: Abstraction has 55397 states and 62701 transitions. [2022-11-21 16:57:01,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 2 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:01,053 INFO L276 IsEmpty]: Start isEmpty. Operand 55397 states and 62701 transitions. [2022-11-21 16:57:01,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1075 [2022-11-21 16:57:01,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:01,124 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:01,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:57:01,125 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:57:01,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:01,126 INFO L85 PathProgramCache]: Analyzing trace with hash -946670589, now seen corresponding path program 1 times [2022-11-21 16:57:01,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:01,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355465332] [2022-11-21 16:57:01,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:01,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:02,120 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 469 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-21 16:57:02,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:02,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355465332] [2022-11-21 16:57:02,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355465332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:02,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:02,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:57:02,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216905799] [2022-11-21 16:57:02,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:02,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:57:02,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:02,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:57:02,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:57:02,126 INFO L87 Difference]: Start difference. First operand 55397 states and 62701 transitions. Second operand has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:06,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:06,135 INFO L93 Difference]: Finished difference Result 132977 states and 151347 transitions. [2022-11-21 16:57:06,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:57:06,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1074 [2022-11-21 16:57:06,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:06,208 INFO L225 Difference]: With dead ends: 132977 [2022-11-21 16:57:06,208 INFO L226 Difference]: Without dead ends: 78301 [2022-11-21 16:57:06,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:57:06,241 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 773 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2878 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 3241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 2878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:06,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 517 Invalid, 3241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 2878 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-21 16:57:06,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78301 states. [2022-11-21 16:57:07,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78301 to 76665. [2022-11-21 16:57:07,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76665 states, 76664 states have (on average 1.1281827193989356) internal successors, (86491), 76664 states have internal predecessors, (86491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:07,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76665 states to 76665 states and 86491 transitions. [2022-11-21 16:57:07,459 INFO L78 Accepts]: Start accepts. Automaton has 76665 states and 86491 transitions. Word has length 1074 [2022-11-21 16:57:07,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:07,459 INFO L495 AbstractCegarLoop]: Abstraction has 76665 states and 86491 transitions. [2022-11-21 16:57:07,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:07,460 INFO L276 IsEmpty]: Start isEmpty. Operand 76665 states and 86491 transitions. [2022-11-21 16:57:07,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1287 [2022-11-21 16:57:07,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:07,520 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:07,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:57:07,520 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:57:07,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:07,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1637271857, now seen corresponding path program 1 times [2022-11-21 16:57:07,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:07,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481864506] [2022-11-21 16:57:07,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:07,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:08,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1118 backedges. 842 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-21 16:57:08,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:08,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481864506] [2022-11-21 16:57:08,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481864506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:08,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:08,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:57:08,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158278419] [2022-11-21 16:57:08,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:08,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:57:08,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:08,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:57:08,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:57:08,757 INFO L87 Difference]: Start difference. First operand 76665 states and 86491 transitions. Second operand has 3 states, 3 states have (on average 363.0) internal successors, (1089), 3 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:13,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:13,142 INFO L93 Difference]: Finished difference Result 176331 states and 200226 transitions. [2022-11-21 16:57:13,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:57:13,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 363.0) internal successors, (1089), 3 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1286 [2022-11-21 16:57:13,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:13,252 INFO L225 Difference]: With dead ends: 176331 [2022-11-21 16:57:13,253 INFO L226 Difference]: Without dead ends: 100387 [2022-11-21 16:57:13,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:57:13,279 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 843 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2248 mSolverCounterSat, 1034 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 3282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1034 IncrementalHoareTripleChecker+Valid, 2248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:13,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 337 Invalid, 3282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1034 Valid, 2248 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-21 16:57:13,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100387 states. [2022-11-21 16:57:14,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100387 to 99569. [2022-11-21 16:57:14,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99569 states, 99568 states have (on average 1.1225594568536077) internal successors, (111771), 99568 states have internal predecessors, (111771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:14,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99569 states to 99569 states and 111771 transitions. [2022-11-21 16:57:14,824 INFO L78 Accepts]: Start accepts. Automaton has 99569 states and 111771 transitions. Word has length 1286 [2022-11-21 16:57:14,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:14,824 INFO L495 AbstractCegarLoop]: Abstraction has 99569 states and 111771 transitions. [2022-11-21 16:57:14,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 363.0) internal successors, (1089), 3 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:14,825 INFO L276 IsEmpty]: Start isEmpty. Operand 99569 states and 111771 transitions. [2022-11-21 16:57:15,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1335 [2022-11-21 16:57:15,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:15,148 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:15,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 16:57:15,150 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:57:15,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:15,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1783445153, now seen corresponding path program 1 times [2022-11-21 16:57:15,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:15,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862139461] [2022-11-21 16:57:15,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:15,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:16,360 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 637 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-11-21 16:57:16,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:16,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862139461] [2022-11-21 16:57:16,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862139461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:16,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:16,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:57:16,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287475557] [2022-11-21 16:57:16,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:16,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:57:16,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:16,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:57:16,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:57:16,365 INFO L87 Difference]: Start difference. First operand 99569 states and 111771 transitions. Second operand has 3 states, 3 states have (on average 358.6666666666667) internal successors, (1076), 2 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:20,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:20,722 INFO L93 Difference]: Finished difference Result 218867 states and 246552 transitions. [2022-11-21 16:57:20,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:57:20,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 358.6666666666667) internal successors, (1076), 2 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1334 [2022-11-21 16:57:20,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:20,844 INFO L225 Difference]: With dead ends: 218867 [2022-11-21 16:57:20,844 INFO L226 Difference]: Without dead ends: 120019 [2022-11-21 16:57:20,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:57:20,877 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 750 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2167 mSolverCounterSat, 967 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 3134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 967 IncrementalHoareTripleChecker+Valid, 2167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:20,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 325 Invalid, 3134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [967 Valid, 2167 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-21 16:57:20,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120019 states. [2022-11-21 16:57:22,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120019 to 118383. [2022-11-21 16:57:22,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118383 states, 118382 states have (on average 1.1040360865672145) internal successors, (130698), 118382 states have internal predecessors, (130698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:22,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118383 states to 118383 states and 130698 transitions. [2022-11-21 16:57:22,863 INFO L78 Accepts]: Start accepts. Automaton has 118383 states and 130698 transitions. Word has length 1334 [2022-11-21 16:57:22,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:22,864 INFO L495 AbstractCegarLoop]: Abstraction has 118383 states and 130698 transitions. [2022-11-21 16:57:22,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 358.6666666666667) internal successors, (1076), 2 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:22,864 INFO L276 IsEmpty]: Start isEmpty. Operand 118383 states and 130698 transitions. [2022-11-21 16:57:22,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1378 [2022-11-21 16:57:22,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:22,966 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:22,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 16:57:22,966 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:57:22,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:22,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1957482990, now seen corresponding path program 1 times [2022-11-21 16:57:22,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:22,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883030870] [2022-11-21 16:57:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:22,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:24,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1322 backedges. 1059 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-11-21 16:57:24,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:24,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883030870] [2022-11-21 16:57:24,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883030870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:24,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:24,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:57:24,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432049249] [2022-11-21 16:57:24,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:24,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:57:24,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:24,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:57:24,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:57:24,105 INFO L87 Difference]: Start difference. First operand 118383 states and 130698 transitions. Second operand has 3 states, 3 states have (on average 395.6666666666667) internal successors, (1187), 3 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:28,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:28,150 INFO L93 Difference]: Finished difference Result 237681 states and 262319 transitions. [2022-11-21 16:57:28,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:57:28,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 395.6666666666667) internal successors, (1187), 3 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1377 [2022-11-21 16:57:28,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:28,267 INFO L225 Difference]: With dead ends: 237681 [2022-11-21 16:57:28,267 INFO L226 Difference]: Without dead ends: 119201 [2022-11-21 16:57:28,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:57:28,555 INFO L413 NwaCegarLoop]: 1310 mSDtfsCounter, 819 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2085 mSolverCounterSat, 754 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 2839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 754 IncrementalHoareTripleChecker+Valid, 2085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:28,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1319 Invalid, 2839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [754 Valid, 2085 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-21 16:57:28,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119201 states. [2022-11-21 16:57:29,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119201 to 116747. [2022-11-21 16:57:29,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116747 states, 116746 states have (on average 1.0856903020231956) internal successors, (126750), 116746 states have internal predecessors, (126750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:30,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116747 states to 116747 states and 126750 transitions. [2022-11-21 16:57:30,325 INFO L78 Accepts]: Start accepts. Automaton has 116747 states and 126750 transitions. Word has length 1377 [2022-11-21 16:57:30,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:30,325 INFO L495 AbstractCegarLoop]: Abstraction has 116747 states and 126750 transitions. [2022-11-21 16:57:30,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 395.6666666666667) internal successors, (1187), 3 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:30,326 INFO L276 IsEmpty]: Start isEmpty. Operand 116747 states and 126750 transitions. [2022-11-21 16:57:30,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5506 [2022-11-21 16:57:30,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:30,814 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:30,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 16:57:30,814 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:57:30,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:30,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1165965019, now seen corresponding path program 1 times [2022-11-21 16:57:30,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:30,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509557490] [2022-11-21 16:57:30,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:30,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:44,931 INFO L134 CoverageAnalysis]: Checked inductivity of 25900 backedges. 6602 proven. 89 refuted. 0 times theorem prover too weak. 19209 trivial. 0 not checked. [2022-11-21 16:57:44,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:44,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509557490] [2022-11-21 16:57:44,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509557490] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:57:44,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539301723] [2022-11-21 16:57:44,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:44,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:57:44,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c4f79-19ba-4c64-998b-499e41038c22/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:57:44,942 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c4f79-19ba-4c64-998b-499e41038c22/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:57:44,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c4f79-19ba-4c64-998b-499e41038c22/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:57:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:47,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 6257 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 16:57:47,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:57:48,182 INFO L134 CoverageAnalysis]: Checked inductivity of 25900 backedges. 11596 proven. 0 refuted. 0 times theorem prover too weak. 14304 trivial. 0 not checked. [2022-11-21 16:57:48,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:57:48,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539301723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:48,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:57:48,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-11-21 16:57:48,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311223720] [2022-11-21 16:57:48,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:48,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:57:48,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:48,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:57:48,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:57:48,191 INFO L87 Difference]: Start difference. First operand 116747 states and 126750 transitions. Second operand has 3 states, 3 states have (on average 456.3333333333333) internal successors, (1369), 3 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:52,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:52,742 INFO L93 Difference]: Finished difference Result 234409 states and 254458 transitions. [2022-11-21 16:57:52,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:57:52,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 456.3333333333333) internal successors, (1369), 3 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5505 [2022-11-21 16:57:52,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:52,867 INFO L225 Difference]: With dead ends: 234409 [2022-11-21 16:57:52,868 INFO L226 Difference]: Without dead ends: 118383 [2022-11-21 16:57:52,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5509 GetRequests, 5504 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:57:52,899 INFO L413 NwaCegarLoop]: 1366 mSDtfsCounter, 493 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 3056 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 3359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 3056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:52,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 1374 Invalid, 3359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 3056 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-21 16:57:52,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118383 states. [2022-11-21 16:57:54,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118383 to 115111. [2022-11-21 16:57:54,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115111 states, 115110 states have (on average 1.079836677960212) internal successors, (124300), 115110 states have internal predecessors, (124300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:54,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115111 states to 115111 states and 124300 transitions. [2022-11-21 16:57:54,321 INFO L78 Accepts]: Start accepts. Automaton has 115111 states and 124300 transitions. Word has length 5505 [2022-11-21 16:57:54,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:54,323 INFO L495 AbstractCegarLoop]: Abstraction has 115111 states and 124300 transitions. [2022-11-21 16:57:54,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 456.3333333333333) internal successors, (1369), 3 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:54,324 INFO L276 IsEmpty]: Start isEmpty. Operand 115111 states and 124300 transitions. [2022-11-21 16:57:55,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5745 [2022-11-21 16:57:55,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:55,350 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:55,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c4f79-19ba-4c64-998b-499e41038c22/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 16:57:55,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14c4f79-19ba-4c64-998b-499e41038c22/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 16:57:55,551 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:57:55,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:55,552 INFO L85 PathProgramCache]: Analyzing trace with hash -60830089, now seen corresponding path program 1 times [2022-11-21 16:57:55,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:55,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581411496] [2022-11-21 16:57:55,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:55,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:05,777 INFO L134 CoverageAnalysis]: Checked inductivity of 24234 backedges. 5084 proven. 0 refuted. 0 times theorem prover too weak. 19150 trivial. 0 not checked. [2022-11-21 16:58:05,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:05,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581411496] [2022-11-21 16:58:05,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581411496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:05,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:05,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:58:05,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257975964] [2022-11-21 16:58:05,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:05,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:58:05,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:05,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:58:05,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:58:05,783 INFO L87 Difference]: Start difference. First operand 115111 states and 124300 transitions. Second operand has 4 states, 4 states have (on average 359.0) internal successors, (1436), 3 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:10,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:58:10,818 INFO L93 Difference]: Finished difference Result 231955 states and 250430 transitions. [2022-11-21 16:58:10,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:58:10,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 359.0) internal successors, (1436), 3 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5744 [2022-11-21 16:58:10,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:58:10,929 INFO L225 Difference]: With dead ends: 231955 [2022-11-21 16:58:10,929 INFO L226 Difference]: Without dead ends: 116747 [2022-11-21 16:58:10,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:58:10,980 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 1719 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3253 mSolverCounterSat, 808 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 4061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 808 IncrementalHoareTripleChecker+Valid, 3253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:58:10,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1719 Valid, 479 Invalid, 4061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [808 Valid, 3253 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-21 16:58:11,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116747 states. [2022-11-21 16:58:12,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116747 to 116747. [2022-11-21 16:58:12,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116747 states, 116746 states have (on average 1.023521148476179) internal successors, (119492), 116746 states have internal predecessors, (119492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:12,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116747 states to 116747 states and 119492 transitions. [2022-11-21 16:58:12,802 INFO L78 Accepts]: Start accepts. Automaton has 116747 states and 119492 transitions. Word has length 5744 [2022-11-21 16:58:12,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:58:12,803 INFO L495 AbstractCegarLoop]: Abstraction has 116747 states and 119492 transitions. [2022-11-21 16:58:12,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 359.0) internal successors, (1436), 3 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:12,803 INFO L276 IsEmpty]: Start isEmpty. Operand 116747 states and 119492 transitions.