./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8 --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 2cb37d56f61ec273f723a733aad4526e011a3841f34b26767a03fdc541dd1ee3 --- 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-2329fc7 [2022-12-13 16:00:34,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:00:34,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:00:34,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:00:34,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:00:34,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:00:34,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:00:34,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:00:34,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:00:34,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:00:34,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:00:34,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:00:34,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:00:34,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:00:34,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:00:34,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:00:34,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:00:34,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:00:34,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:00:34,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:00:34,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:00:34,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:00:34,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:00:34,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:00:34,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:00:34,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:00:34,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:00:34,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:00:34,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:00:34,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:00:34,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:00:34,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:00:34,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:00:34,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:00:34,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:00:34,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:00:34,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:00:34,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:00:34,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:00:34,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:00:34,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:00:34,251 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 16:00:34,273 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:00:34,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:00:34,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:00:34,273 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:00:34,274 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:00:34,274 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:00:34,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:00:34,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:00:34,275 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:00:34,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:00:34,276 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:00:34,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:00:34,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:00:34,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:00:34,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:00:34,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:00:34,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:00:34,277 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:00:34,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:00:34,277 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:00:34,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:00:34,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:00:34,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:00:34,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:00:34,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:00:34,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:00:34,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:00:34,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:00:34,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:00:34,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:00:34,280 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:00:34,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:00:34,280 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:00:34,280 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:00:34,280 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:00:34,280 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2cb37d56f61ec273f723a733aad4526e011a3841f34b26767a03fdc541dd1ee3 [2022-12-13 16:00:34,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:00:34,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:00:34,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:00:34,485 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:00:34,486 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:00:34,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-1.c [2022-12-13 16:00:37,002 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:00:37,177 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:00:37,177 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-1.c [2022-12-13 16:00:37,186 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8/data/95bcf49d7/11c0fed8396e4e0d92f486bdc8e1f4e0/FLAG728f7c89f [2022-12-13 16:00:37,577 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8/data/95bcf49d7/11c0fed8396e4e0d92f486bdc8e1f4e0 [2022-12-13 16:00:37,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:00:37,580 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:00:37,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:00:37,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:00:37,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:00:37,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:00:37" (1/1) ... [2022-12-13 16:00:37,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@103cd7f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:00:37, skipping insertion in model container [2022-12-13 16:00:37,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:00:37" (1/1) ... [2022-12-13 16:00:37,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:00:37,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:00:37,743 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_2f862fcb-b132-42ab-9761-3beb200f1013/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-1.c[914,927] [2022-12-13 16:00:37,779 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_2f862fcb-b132-42ab-9761-3beb200f1013/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-1.c[7115,7128] [2022-12-13 16:00:37,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:00:37,844 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:00:37,852 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_2f862fcb-b132-42ab-9761-3beb200f1013/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-1.c[914,927] [2022-12-13 16:00:37,865 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_2f862fcb-b132-42ab-9761-3beb200f1013/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-1.c[7115,7128] [2022-12-13 16:00:37,902 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:00:37,916 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:00:37,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:00:37 WrapperNode [2022-12-13 16:00:37,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:00:37,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:00:37,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:00:37,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:00:37,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:00:37" (1/1) ... [2022-12-13 16:00:37,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:00:37" (1/1) ... [2022-12-13 16:00:37,962 INFO L138 Inliner]: procedures = 71, calls = 84, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 866 [2022-12-13 16:00:37,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:00:37,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:00:37,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:00:37,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:00:37,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:00:37" (1/1) ... [2022-12-13 16:00:37,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:00:37" (1/1) ... [2022-12-13 16:00:37,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:00:37" (1/1) ... [2022-12-13 16:00:37,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:00:37" (1/1) ... [2022-12-13 16:00:37,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:00:37" (1/1) ... [2022-12-13 16:00:37,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:00:37" (1/1) ... [2022-12-13 16:00:37,992 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:00:37" (1/1) ... [2022-12-13 16:00:37,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:00:37" (1/1) ... [2022-12-13 16:00:37,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:00:37,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:00:37,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:00:37,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:00:37,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:00:37" (1/1) ... [2022-12-13 16:00:38,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:00:38,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:00:38,023 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:00:38,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:00:38,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:00:38,059 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-13 16:00:38,059 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-13 16:00:38,059 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-12-13 16:00:38,059 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-12-13 16:00:38,059 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-12-13 16:00:38,059 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-12-13 16:00:38,060 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-12-13 16:00:38,060 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-12-13 16:00:38,060 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-12-13 16:00:38,060 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-12-13 16:00:38,060 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-12-13 16:00:38,060 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-12-13 16:00:38,060 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-12-13 16:00:38,060 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-12-13 16:00:38,061 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-12-13 16:00:38,061 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-12-13 16:00:38,061 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-12-13 16:00:38,061 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-12-13 16:00:38,061 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-12-13 16:00:38,061 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-12-13 16:00:38,061 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-12-13 16:00:38,062 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-12-13 16:00:38,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:00:38,062 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-12-13 16:00:38,062 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-12-13 16:00:38,062 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-12-13 16:00:38,062 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-12-13 16:00:38,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:00:38,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:00:38,062 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-12-13 16:00:38,063 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-12-13 16:00:38,161 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:00:38,163 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:00:38,753 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:00:38,761 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:00:38,761 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-12-13 16:00:38,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:00:38 BoogieIcfgContainer [2022-12-13 16:00:38,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:00:38,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:00:38,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:00:38,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:00:38,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:00:37" (1/3) ... [2022-12-13 16:00:38,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed7df00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:00:38, skipping insertion in model container [2022-12-13 16:00:38,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:00:37" (2/3) ... [2022-12-13 16:00:38,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed7df00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:00:38, skipping insertion in model container [2022-12-13 16:00:38,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:00:38" (3/3) ... [2022-12-13 16:00:38,770 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.09.cil-1.c [2022-12-13 16:00:38,784 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:00:38,784 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 16:00:38,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:00:38,832 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;@4aa31fe5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:00:38,833 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 16:00:38,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 408 states, 354 states have (on average 1.6271186440677967) internal successors, (576), 360 states have internal predecessors, (576), 37 states have call successors, (37), 14 states have call predecessors, (37), 14 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-12-13 16:00:38,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 16:00:38,845 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:00:38,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:00:38,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:00:38,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:38,850 INFO L85 PathProgramCache]: Analyzing trace with hash 398033314, now seen corresponding path program 1 times [2022-12-13 16:00:38,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:38,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086950884] [2022-12-13 16:00:38,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:38,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:39,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:00:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:39,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:00:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:39,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:00:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:39,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:00:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:39,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 16:00:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:39,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:00:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:39,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 16:00:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:39,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:00:39,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:39,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086950884] [2022-12-13 16:00:39,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086950884] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:39,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:39,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:00:39,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60624628] [2022-12-13 16:00:39,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:39,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:00:39,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:39,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:00:39,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:00:39,282 INFO L87 Difference]: Start difference. First operand has 408 states, 354 states have (on average 1.6271186440677967) internal successors, (576), 360 states have internal predecessors, (576), 37 states have call successors, (37), 14 states have call predecessors, (37), 14 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 16:00:40,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:40,221 INFO L93 Difference]: Finished difference Result 926 states and 1464 transitions. [2022-12-13 16:00:40,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 16:00:40,223 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-12-13 16:00:40,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:40,237 INFO L225 Difference]: With dead ends: 926 [2022-12-13 16:00:40,237 INFO L226 Difference]: Without dead ends: 533 [2022-12-13 16:00:40,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-12-13 16:00:40,245 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 746 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:40,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 1780 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 16:00:40,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-12-13 16:00:40,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 494. [2022-12-13 16:00:40,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 422 states have (on average 1.509478672985782) internal successors, (637), 428 states have internal predecessors, (637), 48 states have call successors, (48), 21 states have call predecessors, (48), 22 states have return successors, (51), 47 states have call predecessors, (51), 46 states have call successors, (51) [2022-12-13 16:00:40,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 736 transitions. [2022-12-13 16:00:40,331 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 736 transitions. Word has length 65 [2022-12-13 16:00:40,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:00:40,331 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 736 transitions. [2022-12-13 16:00:40,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 16:00:40,332 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 736 transitions. [2022-12-13 16:00:40,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 16:00:40,335 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:00:40,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:00:40,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:00:40,336 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:00:40,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:40,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2076921954, now seen corresponding path program 1 times [2022-12-13 16:00:40,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:40,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445582263] [2022-12-13 16:00:40,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:40,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:40,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:00:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:40,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:00:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:40,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:00:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:40,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:00:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:40,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 16:00:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:40,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:00:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:40,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 16:00:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:40,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:00:40,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:40,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445582263] [2022-12-13 16:00:40,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445582263] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:40,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:40,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:00:40,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612177374] [2022-12-13 16:00:40,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:40,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:00:40,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:40,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:00:40,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:00:40,531 INFO L87 Difference]: Start difference. First operand 494 states and 736 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 16:00:41,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:41,521 INFO L93 Difference]: Finished difference Result 841 states and 1213 transitions. [2022-12-13 16:00:41,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 16:00:41,521 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-12-13 16:00:41,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:41,527 INFO L225 Difference]: With dead ends: 841 [2022-12-13 16:00:41,528 INFO L226 Difference]: Without dead ends: 664 [2022-12-13 16:00:41,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-12-13 16:00:41,529 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 1166 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 1562 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:41,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1194 Valid, 2012 Invalid, 1682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1562 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 16:00:41,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-12-13 16:00:41,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 590. [2022-12-13 16:00:41,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 498 states have (on average 1.4879518072289157) internal successors, (741), 506 states have internal predecessors, (741), 59 states have call successors, (59), 28 states have call predecessors, (59), 31 states have return successors, (70), 59 states have call predecessors, (70), 57 states have call successors, (70) [2022-12-13 16:00:41,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 870 transitions. [2022-12-13 16:00:41,561 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 870 transitions. Word has length 65 [2022-12-13 16:00:41,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:00:41,562 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 870 transitions. [2022-12-13 16:00:41,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 16:00:41,562 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 870 transitions. [2022-12-13 16:00:41,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 16:00:41,563 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:00:41,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:00:41,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:00:41,564 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:00:41,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:41,564 INFO L85 PathProgramCache]: Analyzing trace with hash 48335844, now seen corresponding path program 1 times [2022-12-13 16:00:41,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:41,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324921412] [2022-12-13 16:00:41,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:41,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:41,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:00:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:41,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:00:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:41,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:00:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:41,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:00:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:41,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 16:00:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:41,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:00:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:41,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 16:00:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:41,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:00:41,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:41,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324921412] [2022-12-13 16:00:41,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324921412] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:41,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:41,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 16:00:41,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433306790] [2022-12-13 16:00:41,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:41,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:00:41,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:41,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:00:41,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:00:41,715 INFO L87 Difference]: Start difference. First operand 590 states and 870 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 16:00:42,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:42,652 INFO L93 Difference]: Finished difference Result 891 states and 1284 transitions. [2022-12-13 16:00:42,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 16:00:42,652 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-12-13 16:00:42,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:42,655 INFO L225 Difference]: With dead ends: 891 [2022-12-13 16:00:42,655 INFO L226 Difference]: Without dead ends: 624 [2022-12-13 16:00:42,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 16:00:42,656 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 536 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 1680 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 2372 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:42,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 2372 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1680 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 16:00:42,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-12-13 16:00:42,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 595. [2022-12-13 16:00:42,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 502 states have (on average 1.4800796812749004) internal successors, (743), 510 states have internal predecessors, (743), 59 states have call successors, (59), 28 states have call predecessors, (59), 32 states have return successors, (71), 60 states have call predecessors, (71), 57 states have call successors, (71) [2022-12-13 16:00:42,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 873 transitions. [2022-12-13 16:00:42,683 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 873 transitions. Word has length 65 [2022-12-13 16:00:42,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:00:42,683 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 873 transitions. [2022-12-13 16:00:42,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 16:00:42,683 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 873 transitions. [2022-12-13 16:00:42,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 16:00:42,685 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:00:42,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:00:42,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 16:00:42,685 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:00:42,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:42,685 INFO L85 PathProgramCache]: Analyzing trace with hash -981023454, now seen corresponding path program 1 times [2022-12-13 16:00:42,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:42,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590217331] [2022-12-13 16:00:42,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:42,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:42,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:00:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:42,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:00:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:42,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:00:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:42,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:00:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:42,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 16:00:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:42,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:00:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:42,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 16:00:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:42,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:00:42,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:42,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590217331] [2022-12-13 16:00:42,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590217331] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:42,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:42,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 16:00:42,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248564130] [2022-12-13 16:00:42,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:42,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:00:42,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:42,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:00:42,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:00:42,802 INFO L87 Difference]: Start difference. First operand 595 states and 873 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 16:00:43,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:43,658 INFO L93 Difference]: Finished difference Result 913 states and 1306 transitions. [2022-12-13 16:00:43,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 16:00:43,659 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-12-13 16:00:43,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:43,663 INFO L225 Difference]: With dead ends: 913 [2022-12-13 16:00:43,663 INFO L226 Difference]: Without dead ends: 641 [2022-12-13 16:00:43,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-12-13 16:00:43,665 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 798 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:43,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 2101 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 16:00:43,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-12-13 16:00:43,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 610. [2022-12-13 16:00:43,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 514 states have (on average 1.4688715953307394) internal successors, (755), 522 states have internal predecessors, (755), 59 states have call successors, (59), 28 states have call predecessors, (59), 35 states have return successors, (74), 63 states have call predecessors, (74), 57 states have call successors, (74) [2022-12-13 16:00:43,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 888 transitions. [2022-12-13 16:00:43,702 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 888 transitions. Word has length 65 [2022-12-13 16:00:43,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:00:43,703 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 888 transitions. [2022-12-13 16:00:43,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 16:00:43,703 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 888 transitions. [2022-12-13 16:00:43,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 16:00:43,705 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:00:43,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:00:43,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 16:00:43,705 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:00:43,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:43,706 INFO L85 PathProgramCache]: Analyzing trace with hash 405179940, now seen corresponding path program 1 times [2022-12-13 16:00:43,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:43,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727771448] [2022-12-13 16:00:43,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:43,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:43,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:00:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:43,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:00:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:43,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:00:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:43,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:00:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:43,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 16:00:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:43,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:00:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:43,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 16:00:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:43,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:00:43,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:43,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727771448] [2022-12-13 16:00:43,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727771448] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:43,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:43,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:00:43,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759407148] [2022-12-13 16:00:43,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:43,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:00:43,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:43,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:00:43,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:00:43,838 INFO L87 Difference]: Start difference. First operand 610 states and 888 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 16:00:44,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:44,682 INFO L93 Difference]: Finished difference Result 1002 states and 1399 transitions. [2022-12-13 16:00:44,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 16:00:44,682 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-12-13 16:00:44,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:44,685 INFO L225 Difference]: With dead ends: 1002 [2022-12-13 16:00:44,685 INFO L226 Difference]: Without dead ends: 717 [2022-12-13 16:00:44,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-12-13 16:00:44,687 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 1198 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:44,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 1787 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 16:00:44,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-12-13 16:00:44,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 622. [2022-12-13 16:00:44,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 524 states have (on average 1.4599236641221374) internal successors, (765), 532 states have internal predecessors, (765), 60 states have call successors, (60), 29 states have call predecessors, (60), 36 states have return successors, (73), 64 states have call predecessors, (73), 58 states have call successors, (73) [2022-12-13 16:00:44,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 898 transitions. [2022-12-13 16:00:44,722 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 898 transitions. Word has length 65 [2022-12-13 16:00:44,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:00:44,723 INFO L495 AbstractCegarLoop]: Abstraction has 622 states and 898 transitions. [2022-12-13 16:00:44,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 16:00:44,723 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 898 transitions. [2022-12-13 16:00:44,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 16:00:44,725 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:00:44,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:00:44,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 16:00:44,725 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:00:44,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:44,725 INFO L85 PathProgramCache]: Analyzing trace with hash 271166434, now seen corresponding path program 1 times [2022-12-13 16:00:44,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:44,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447432065] [2022-12-13 16:00:44,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:44,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:44,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:00:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:44,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:00:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:44,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:00:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:44,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:00:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:44,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 16:00:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:44,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:00:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:44,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 16:00:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:44,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:00:44,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:44,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447432065] [2022-12-13 16:00:44,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447432065] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:44,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:44,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:00:44,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062042018] [2022-12-13 16:00:44,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:44,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:00:44,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:44,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:00:44,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:00:44,805 INFO L87 Difference]: Start difference. First operand 622 states and 898 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 16:00:45,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:45,369 INFO L93 Difference]: Finished difference Result 1264 states and 1745 transitions. [2022-12-13 16:00:45,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 16:00:45,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-12-13 16:00:45,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:45,373 INFO L225 Difference]: With dead ends: 1264 [2022-12-13 16:00:45,373 INFO L226 Difference]: Without dead ends: 968 [2022-12-13 16:00:45,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:00:45,375 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 1467 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:45,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 1188 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 16:00:45,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-12-13 16:00:45,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 912. [2022-12-13 16:00:45,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 748 states have (on average 1.4064171122994653) internal successors, (1052), 763 states have internal predecessors, (1052), 95 states have call successors, (95), 51 states have call predecessors, (95), 67 states have return successors, (130), 104 states have call predecessors, (130), 93 states have call successors, (130) [2022-12-13 16:00:45,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1277 transitions. [2022-12-13 16:00:45,408 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1277 transitions. Word has length 65 [2022-12-13 16:00:45,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:00:45,408 INFO L495 AbstractCegarLoop]: Abstraction has 912 states and 1277 transitions. [2022-12-13 16:00:45,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 16:00:45,408 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1277 transitions. [2022-12-13 16:00:45,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 16:00:45,410 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:00:45,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:00:45,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 16:00:45,410 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:00:45,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:45,410 INFO L85 PathProgramCache]: Analyzing trace with hash 498977079, now seen corresponding path program 1 times [2022-12-13 16:00:45,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:45,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34103307] [2022-12-13 16:00:45,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:45,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:45,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:00:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:45,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:00:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:45,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:00:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:45,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:00:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:45,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 16:00:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:45,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:00:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:45,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 16:00:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:45,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:00:45,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:45,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34103307] [2022-12-13 16:00:45,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34103307] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:45,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:45,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 16:00:45,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100159540] [2022-12-13 16:00:45,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:45,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:00:45,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:45,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:00:45,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:00:45,470 INFO L87 Difference]: Start difference. First operand 912 states and 1277 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 16:00:46,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:46,128 INFO L93 Difference]: Finished difference Result 2115 states and 2848 transitions. [2022-12-13 16:00:46,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 16:00:46,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-12-13 16:00:46,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:46,135 INFO L225 Difference]: With dead ends: 2115 [2022-12-13 16:00:46,135 INFO L226 Difference]: Without dead ends: 1508 [2022-12-13 16:00:46,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:00:46,138 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 721 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:46,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 1422 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 16:00:46,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2022-12-13 16:00:46,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1393. [2022-12-13 16:00:46,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 1127 states have (on average 1.360248447204969) internal successors, (1533), 1145 states have internal predecessors, (1533), 140 states have call successors, (140), 95 states have call predecessors, (140), 124 states have return successors, (202), 159 states have call predecessors, (202), 138 states have call successors, (202) [2022-12-13 16:00:46,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1875 transitions. [2022-12-13 16:00:46,226 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1875 transitions. Word has length 66 [2022-12-13 16:00:46,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:00:46,226 INFO L495 AbstractCegarLoop]: Abstraction has 1393 states and 1875 transitions. [2022-12-13 16:00:46,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 16:00:46,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1875 transitions. [2022-12-13 16:00:46,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 16:00:46,228 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:00:46,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:00:46,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 16:00:46,229 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:00:46,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:46,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1957216738, now seen corresponding path program 1 times [2022-12-13 16:00:46,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:46,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299261167] [2022-12-13 16:00:46,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:46,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:46,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:00:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:46,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:00:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:46,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:00:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:46,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:00:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:46,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 16:00:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:46,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:00:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:46,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 16:00:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:00:46,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:46,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299261167] [2022-12-13 16:00:46,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299261167] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:46,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:46,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 16:00:46,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957177510] [2022-12-13 16:00:46,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:46,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:00:46,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:46,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:00:46,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:00:46,305 INFO L87 Difference]: Start difference. First operand 1393 states and 1875 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 16:00:46,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:46,826 INFO L93 Difference]: Finished difference Result 3581 states and 4681 transitions. [2022-12-13 16:00:46,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 16:00:46,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-12-13 16:00:46,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:46,833 INFO L225 Difference]: With dead ends: 3581 [2022-12-13 16:00:46,833 INFO L226 Difference]: Without dead ends: 2513 [2022-12-13 16:00:46,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-12-13 16:00:46,836 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 1170 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:46,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1200 Valid, 1192 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 16:00:46,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2022-12-13 16:00:46,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2255. [2022-12-13 16:00:46,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 1793 states have (on average 1.3162297824874511) internal successors, (2360), 1821 states have internal predecessors, (2360), 238 states have call successors, (238), 179 states have call predecessors, (238), 222 states have return successors, (338), 261 states have call predecessors, (338), 236 states have call successors, (338) [2022-12-13 16:00:46,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 2936 transitions. [2022-12-13 16:00:46,926 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 2936 transitions. Word has length 66 [2022-12-13 16:00:46,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:00:46,927 INFO L495 AbstractCegarLoop]: Abstraction has 2255 states and 2936 transitions. [2022-12-13 16:00:46,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 16:00:46,927 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 2936 transitions. [2022-12-13 16:00:46,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-13 16:00:46,928 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:00:46,928 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] [2022-12-13 16:00:46,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 16:00:46,928 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:00:46,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:46,929 INFO L85 PathProgramCache]: Analyzing trace with hash 388589846, now seen corresponding path program 1 times [2022-12-13 16:00:46,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:46,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901879993] [2022-12-13 16:00:46,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:46,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:46,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:00:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:46,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:00:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:46,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:00:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:46,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:00:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:46,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 16:00:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:46,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:00:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:46,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 16:00:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:00:46,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:46,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901879993] [2022-12-13 16:00:46,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901879993] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:46,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:46,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 16:00:46,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201549589] [2022-12-13 16:00:46,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:46,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:00:46,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:46,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:00:46,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:00:46,998 INFO L87 Difference]: Start difference. First operand 2255 states and 2936 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 16:00:47,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:47,671 INFO L93 Difference]: Finished difference Result 5165 states and 6586 transitions. [2022-12-13 16:00:47,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 16:00:47,672 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-12-13 16:00:47,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:47,682 INFO L225 Difference]: With dead ends: 5165 [2022-12-13 16:00:47,682 INFO L226 Difference]: Without dead ends: 3235 [2022-12-13 16:00:47,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:00:47,685 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 1155 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:47,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1185 Valid, 1237 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 16:00:47,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2022-12-13 16:00:47,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 2987. [2022-12-13 16:00:47,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2987 states, 2361 states have (on average 1.2977551884794578) internal successors, (3064), 2397 states have internal predecessors, (3064), 318 states have call successors, (318), 249 states have call predecessors, (318), 306 states have return successors, (447), 347 states have call predecessors, (447), 316 states have call successors, (447) [2022-12-13 16:00:47,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2987 states to 2987 states and 3829 transitions. [2022-12-13 16:00:47,813 INFO L78 Accepts]: Start accepts. Automaton has 2987 states and 3829 transitions. Word has length 72 [2022-12-13 16:00:47,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:00:47,814 INFO L495 AbstractCegarLoop]: Abstraction has 2987 states and 3829 transitions. [2022-12-13 16:00:47,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 16:00:47,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2987 states and 3829 transitions. [2022-12-13 16:00:47,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-13 16:00:47,815 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:00:47,815 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:00:47,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 16:00:47,815 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:00:47,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:47,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1355326336, now seen corresponding path program 1 times [2022-12-13 16:00:47,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:47,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634419577] [2022-12-13 16:00:47,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:47,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:47,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:00:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:47,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:00:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:47,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:00:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:47,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:00:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:47,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 16:00:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:47,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:00:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:47,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 16:00:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:47,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:00:47,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:47,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634419577] [2022-12-13 16:00:47,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634419577] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:47,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:47,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:00:47,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85191484] [2022-12-13 16:00:47,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:47,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:00:47,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:47,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:00:47,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:00:47,884 INFO L87 Difference]: Start difference. First operand 2987 states and 3829 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-12-13 16:00:48,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:48,666 INFO L93 Difference]: Finished difference Result 3761 states and 4760 transitions. [2022-12-13 16:00:48,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 16:00:48,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-12-13 16:00:48,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:48,675 INFO L225 Difference]: With dead ends: 3761 [2022-12-13 16:00:48,675 INFO L226 Difference]: Without dead ends: 3758 [2022-12-13 16:00:48,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:00:48,676 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 2044 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2054 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:48,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2054 Valid, 935 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 16:00:48,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2022-12-13 16:00:48,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3481. [2022-12-13 16:00:48,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3481 states, 2746 states have (on average 1.2876911871813548) internal successors, (3536), 2787 states have internal predecessors, (3536), 368 states have call successors, (368), 293 states have call predecessors, (368), 365 states have return successors, (526), 407 states have call predecessors, (526), 367 states have call successors, (526) [2022-12-13 16:00:48,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3481 states to 3481 states and 4430 transitions. [2022-12-13 16:00:48,848 INFO L78 Accepts]: Start accepts. Automaton has 3481 states and 4430 transitions. Word has length 73 [2022-12-13 16:00:48,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:00:48,848 INFO L495 AbstractCegarLoop]: Abstraction has 3481 states and 4430 transitions. [2022-12-13 16:00:48,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-12-13 16:00:48,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3481 states and 4430 transitions. [2022-12-13 16:00:48,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-13 16:00:48,849 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:00:48,850 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:00:48,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 16:00:48,850 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:00:48,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:48,850 INFO L85 PathProgramCache]: Analyzing trace with hash 933342880, now seen corresponding path program 1 times [2022-12-13 16:00:48,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:48,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925008976] [2022-12-13 16:00:48,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:48,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:48,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:00:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:48,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:00:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:48,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:00:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:48,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:00:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:48,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 16:00:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:48,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:00:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:48,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 16:00:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:48,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:00:48,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:48,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925008976] [2022-12-13 16:00:48,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925008976] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:00:48,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333951719] [2022-12-13 16:00:48,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:48,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:00:48,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:00:48,960 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:00:48,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:00:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:49,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 16:00:49,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:00:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:00:49,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:00:49,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:00:49,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333951719] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:00:49,450 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:00:49,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-12-13 16:00:49,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803006902] [2022-12-13 16:00:49,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:00:49,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 16:00:49,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:49,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 16:00:49,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:00:49,452 INFO L87 Difference]: Start difference. First operand 3481 states and 4430 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 16:00:51,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:51,116 INFO L93 Difference]: Finished difference Result 7922 states and 9916 transitions. [2022-12-13 16:00:51,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 16:00:51,116 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-12-13 16:00:51,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:51,134 INFO L225 Difference]: With dead ends: 7922 [2022-12-13 16:00:51,134 INFO L226 Difference]: Without dead ends: 7919 [2022-12-13 16:00:51,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-12-13 16:00:51,136 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 2027 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 2160 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2096 SdHoareTripleChecker+Valid, 2144 SdHoareTripleChecker+Invalid, 2415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 2160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:51,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2096 Valid, 2144 Invalid, 2415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 2160 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 16:00:51,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7919 states. [2022-12-13 16:00:51,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7919 to 5271. [2022-12-13 16:00:51,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5271 states, 4150 states have (on average 1.28) internal successors, (5312), 4213 states have internal predecessors, (5312), 552 states have call successors, (552), 451 states have call predecessors, (552), 567 states have return successors, (804), 613 states have call predecessors, (804), 551 states have call successors, (804) [2022-12-13 16:00:51,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5271 states to 5271 states and 6668 transitions. [2022-12-13 16:00:51,539 INFO L78 Accepts]: Start accepts. Automaton has 5271 states and 6668 transitions. Word has length 74 [2022-12-13 16:00:51,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:00:51,539 INFO L495 AbstractCegarLoop]: Abstraction has 5271 states and 6668 transitions. [2022-12-13 16:00:51,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 16:00:51,539 INFO L276 IsEmpty]: Start isEmpty. Operand 5271 states and 6668 transitions. [2022-12-13 16:00:51,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 16:00:51,541 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:00:51,541 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-12-13 16:00:51,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:00:51,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 16:00:51,742 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:00:51,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:51,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1804001536, now seen corresponding path program 2 times [2022-12-13 16:00:51,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:51,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449985387] [2022-12-13 16:00:51,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:51,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:51,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:00:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:51,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:00:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:51,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:00:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:51,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:00:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:51,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 16:00:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:51,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:00:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:51,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 16:00:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:51,797 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:00:51,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:51,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449985387] [2022-12-13 16:00:51,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449985387] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:51,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:51,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 16:00:51,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249548811] [2022-12-13 16:00:51,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:51,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:00:51,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:51,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:00:51,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:00:51,798 INFO L87 Difference]: Start difference. First operand 5271 states and 6668 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-12-13 16:00:52,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:52,559 INFO L93 Difference]: Finished difference Result 7953 states and 10041 transitions. [2022-12-13 16:00:52,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:00:52,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-12-13 16:00:52,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:52,568 INFO L225 Difference]: With dead ends: 7953 [2022-12-13 16:00:52,568 INFO L226 Difference]: Without dead ends: 3878 [2022-12-13 16:00:52,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:00:52,574 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 1075 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:52,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 1318 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 16:00:52,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2022-12-13 16:00:52,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3643. [2022-12-13 16:00:52,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3643 states, 2878 states have (on average 1.2689367616400278) internal successors, (3652), 2919 states have internal predecessors, (3652), 384 states have call successors, (384), 307 states have call predecessors, (384), 379 states have return successors, (530), 423 states have call predecessors, (530), 383 states have call successors, (530) [2022-12-13 16:00:52,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 4566 transitions. [2022-12-13 16:00:52,804 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 4566 transitions. Word has length 77 [2022-12-13 16:00:52,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:00:52,804 INFO L495 AbstractCegarLoop]: Abstraction has 3643 states and 4566 transitions. [2022-12-13 16:00:52,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-12-13 16:00:52,804 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 4566 transitions. [2022-12-13 16:00:52,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-13 16:00:52,806 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:00:52,806 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] [2022-12-13 16:00:52,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 16:00:52,806 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:00:52,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:52,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1529654834, now seen corresponding path program 1 times [2022-12-13 16:00:52,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:52,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708936512] [2022-12-13 16:00:52,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:52,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:52,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:00:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:52,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:00:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:52,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:00:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:52,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:00:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:52,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 16:00:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:52,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:00:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:52,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 16:00:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:52,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 16:00:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:52,886 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 16:00:52,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:52,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708936512] [2022-12-13 16:00:52,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708936512] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:52,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:52,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:00:52,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848431810] [2022-12-13 16:00:52,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:52,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:00:52,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:52,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:00:52,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:00:52,889 INFO L87 Difference]: Start difference. First operand 3643 states and 4566 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 16:00:54,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:54,084 INFO L93 Difference]: Finished difference Result 10515 states and 12983 transitions. [2022-12-13 16:00:54,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 16:00:54,084 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-12-13 16:00:54,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:54,097 INFO L225 Difference]: With dead ends: 10515 [2022-12-13 16:00:54,097 INFO L226 Difference]: Without dead ends: 5878 [2022-12-13 16:00:54,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-12-13 16:00:54,102 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 1566 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:54,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1582 Valid, 1571 Invalid, 1636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 16:00:54,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5878 states. [2022-12-13 16:00:54,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5878 to 5558. [2022-12-13 16:00:54,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5558 states, 4336 states have (on average 1.2396217712177122) internal successors, (5375), 4420 states have internal predecessors, (5375), 588 states have call successors, (588), 481 states have call predecessors, (588), 632 states have return successors, (912), 663 states have call predecessors, (912), 587 states have call successors, (912) [2022-12-13 16:00:54,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 6875 transitions. [2022-12-13 16:00:54,444 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 6875 transitions. Word has length 84 [2022-12-13 16:00:54,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:00:54,445 INFO L495 AbstractCegarLoop]: Abstraction has 5558 states and 6875 transitions. [2022-12-13 16:00:54,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 16:00:54,445 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 6875 transitions. [2022-12-13 16:00:54,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 16:00:54,448 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:00:54,448 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-12-13 16:00:54,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 16:00:54,448 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:00:54,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:54,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1318594338, now seen corresponding path program 1 times [2022-12-13 16:00:54,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:54,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663514880] [2022-12-13 16:00:54,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:54,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:54,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:00:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:54,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:00:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:54,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:00:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:54,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:00:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:54,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 16:00:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:54,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:00:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:54,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 16:00:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:54,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 16:00:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:54,539 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:00:54,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:54,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663514880] [2022-12-13 16:00:54,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663514880] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:54,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:54,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 16:00:54,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499646096] [2022-12-13 16:00:54,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:54,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:00:54,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:54,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:00:54,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:00:54,541 INFO L87 Difference]: Start difference. First operand 5558 states and 6875 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 16:00:55,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:55,724 INFO L93 Difference]: Finished difference Result 9561 states and 11715 transitions. [2022-12-13 16:00:55,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 16:00:55,725 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-12-13 16:00:55,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:55,735 INFO L225 Difference]: With dead ends: 9561 [2022-12-13 16:00:55,735 INFO L226 Difference]: Without dead ends: 4968 [2022-12-13 16:00:55,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-12-13 16:00:55,741 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 2139 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2182 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 1992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:55,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2182 Valid, 1877 Invalid, 1992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 16:00:55,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4968 states. [2022-12-13 16:00:56,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4968 to 4634. [2022-12-13 16:00:56,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4634 states, 3625 states have (on average 1.234206896551724) internal successors, (4474), 3691 states have internal predecessors, (4474), 489 states have call successors, (489), 396 states have call predecessors, (489), 518 states have return successors, (690), 553 states have call predecessors, (690), 488 states have call successors, (690) [2022-12-13 16:00:56,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4634 states to 4634 states and 5653 transitions. [2022-12-13 16:00:56,030 INFO L78 Accepts]: Start accepts. Automaton has 4634 states and 5653 transitions. Word has length 93 [2022-12-13 16:00:56,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:00:56,031 INFO L495 AbstractCegarLoop]: Abstraction has 4634 states and 5653 transitions. [2022-12-13 16:00:56,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 16:00:56,031 INFO L276 IsEmpty]: Start isEmpty. Operand 4634 states and 5653 transitions. [2022-12-13 16:00:56,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 16:00:56,036 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:00:56,037 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:00:56,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 16:00:56,037 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:00:56,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:56,037 INFO L85 PathProgramCache]: Analyzing trace with hash -162152600, now seen corresponding path program 1 times [2022-12-13 16:00:56,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:56,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806009881] [2022-12-13 16:00:56,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:56,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:00:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:00:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:00:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:00:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 16:00:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:00:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 16:00:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 16:00:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 16:00:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 16:00:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 16:00:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:00:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 16:00:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 16:00:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 16:00:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 16:00:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,177 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-12-13 16:00:56,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:56,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806009881] [2022-12-13 16:00:56,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806009881] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:00:56,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593973673] [2022-12-13 16:00:56,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:56,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:00:56,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:00:56,179 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:00:56,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:00:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 16:00:56,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:00:56,302 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 16:00:56,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:00:56,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593973673] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:56,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:00:56,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-12-13 16:00:56,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145210221] [2022-12-13 16:00:56,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:56,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:00:56,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:56,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:00:56,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-13 16:00:56,304 INFO L87 Difference]: Start difference. First operand 4634 states and 5653 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-13 16:00:56,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:56,503 INFO L93 Difference]: Finished difference Result 6800 states and 8276 transitions. [2022-12-13 16:00:56,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:00:56,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-12-13 16:00:56,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:56,510 INFO L225 Difference]: With dead ends: 6800 [2022-12-13 16:00:56,510 INFO L226 Difference]: Without dead ends: 2495 [2022-12-13 16:00:56,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-12-13 16:00:56,514 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 34 mSDsluCounter, 2364 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2965 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:56,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 2965 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:00:56,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2022-12-13 16:00:56,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2370. [2022-12-13 16:00:56,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2370 states, 1938 states have (on average 1.2487100103199174) internal successors, (2420), 1953 states have internal predecessors, (2420), 213 states have call successors, (213), 162 states have call predecessors, (213), 217 states have return successors, (297), 255 states have call predecessors, (297), 212 states have call successors, (297) [2022-12-13 16:00:56,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 2930 transitions. [2022-12-13 16:00:56,637 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 2930 transitions. Word has length 145 [2022-12-13 16:00:56,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:00:56,637 INFO L495 AbstractCegarLoop]: Abstraction has 2370 states and 2930 transitions. [2022-12-13 16:00:56,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-13 16:00:56,638 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 2930 transitions. [2022-12-13 16:00:56,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 16:00:56,640 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:00:56,640 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:00:56,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 16:00:56,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f862fcb-b132-42ab-9761-3beb200f1013/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:00:56,841 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:00:56,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:56,841 INFO L85 PathProgramCache]: Analyzing trace with hash -35746380, now seen corresponding path program 1 times [2022-12-13 16:00:56,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:56,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119196440] [2022-12-13 16:00:56,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:56,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:00:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 16:00:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 16:00:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:00:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 16:00:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:00:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 16:00:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 16:00:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 16:00:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 16:00:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 16:00:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 16:00:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 16:00:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 16:00:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 16:00:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 16:00:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,915 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-12-13 16:00:56,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:56,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119196440] [2022-12-13 16:00:56,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119196440] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:56,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:56,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 16:00:56,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433193232] [2022-12-13 16:00:56,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:56,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:00:56,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:56,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:00:56,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:00:56,916 INFO L87 Difference]: Start difference. First operand 2370 states and 2930 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 16:00:57,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:57,441 INFO L93 Difference]: Finished difference Result 2435 states and 2998 transitions. [2022-12-13 16:00:57,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:00:57,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2022-12-13 16:00:57,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:57,445 INFO L225 Difference]: With dead ends: 2435 [2022-12-13 16:00:57,445 INFO L226 Difference]: Without dead ends: 1992 [2022-12-13 16:00:57,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:00:57,446 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 635 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:57,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1365 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 16:00:57,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2022-12-13 16:00:57,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1930. [2022-12-13 16:00:57,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1594 states have (on average 1.2647427854454203) internal successors, (2016), 1606 states have internal predecessors, (2016), 167 states have call successors, (167), 122 states have call predecessors, (167), 167 states have return successors, (233), 202 states have call predecessors, (233), 166 states have call successors, (233) [2022-12-13 16:00:57,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2416 transitions. [2022-12-13 16:00:57,580 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2416 transitions. Word has length 147 [2022-12-13 16:00:57,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:00:57,581 INFO L495 AbstractCegarLoop]: Abstraction has 1930 states and 2416 transitions. [2022-12-13 16:00:57,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 16:00:57,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2416 transitions. [2022-12-13 16:00:57,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 16:00:57,583 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:00:57,584 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] [2022-12-13 16:00:57,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 16:00:57,584 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:00:57,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:57,584 INFO L85 PathProgramCache]: Analyzing trace with hash -854471620, now seen corresponding path program 1 times [2022-12-13 16:00:57,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:57,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942341121] [2022-12-13 16:00:57,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:57,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:57,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:00:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:57,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 16:00:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:57,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 16:00:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:57,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 16:00:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:57,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 16:00:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:00:57,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:57,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942341121] [2022-12-13 16:00:57,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942341121] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:57,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:57,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:00:57,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101746730] [2022-12-13 16:00:57,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:57,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:00:57,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:57,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:00:57,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:00:57,687 INFO L87 Difference]: Start difference. First operand 1930 states and 2416 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:00:58,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:58,913 INFO L93 Difference]: Finished difference Result 2333 states and 3064 transitions. [2022-12-13 16:00:58,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:00:58,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-12-13 16:00:58,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:58,917 INFO L225 Difference]: With dead ends: 2333 [2022-12-13 16:00:58,917 INFO L226 Difference]: Without dead ends: 2039 [2022-12-13 16:00:58,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:00:58,918 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 913 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:58,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 828 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 16:00:58,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2022-12-13 16:00:59,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 1930. [2022-12-13 16:00:59,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1594 states have (on average 1.2641154328732749) internal successors, (2015), 1606 states have internal predecessors, (2015), 167 states have call successors, (167), 122 states have call predecessors, (167), 167 states have return successors, (233), 202 states have call predecessors, (233), 166 states have call successors, (233) [2022-12-13 16:00:59,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2415 transitions. [2022-12-13 16:00:59,125 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2415 transitions. Word has length 145 [2022-12-13 16:00:59,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:00:59,126 INFO L495 AbstractCegarLoop]: Abstraction has 1930 states and 2415 transitions. [2022-12-13 16:00:59,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:00:59,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2415 transitions. [2022-12-13 16:00:59,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 16:00:59,127 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:00:59,127 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] [2022-12-13 16:00:59,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 16:00:59,128 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:00:59,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:59,128 INFO L85 PathProgramCache]: Analyzing trace with hash 2041542074, now seen corresponding path program 1 times [2022-12-13 16:00:59,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:59,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518039001] [2022-12-13 16:00:59,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:59,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:59,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:00:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:59,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 16:00:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:59,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 16:00:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:59,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 16:00:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:59,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 16:00:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:59,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:00:59,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:59,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518039001] [2022-12-13 16:00:59,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518039001] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:59,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:59,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 16:00:59,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900947801] [2022-12-13 16:00:59,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:59,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:00:59,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:59,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:00:59,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:00:59,235 INFO L87 Difference]: Start difference. First operand 1930 states and 2415 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:01:01,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:01:01,283 INFO L93 Difference]: Finished difference Result 2730 states and 3702 transitions. [2022-12-13 16:01:01,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 16:01:01,283 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-12-13 16:01:01,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:01:01,289 INFO L225 Difference]: With dead ends: 2730 [2022-12-13 16:01:01,289 INFO L226 Difference]: Without dead ends: 2445 [2022-12-13 16:01:01,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:01:01,290 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 1431 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 2014 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 16:01:01,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1457 Valid, 1256 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2014 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 16:01:01,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2445 states. [2022-12-13 16:01:01,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2445 to 2228. [2022-12-13 16:01:01,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 1867 states have (on average 1.3111944295661488) internal successors, (2448), 1880 states have internal predecessors, (2448), 185 states have call successors, (185), 128 states have call predecessors, (185), 174 states have return successors, (254), 220 states have call predecessors, (254), 184 states have call successors, (254) [2022-12-13 16:01:01,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 2887 transitions. [2022-12-13 16:01:01,518 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 2887 transitions. Word has length 145 [2022-12-13 16:01:01,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:01:01,519 INFO L495 AbstractCegarLoop]: Abstraction has 2228 states and 2887 transitions. [2022-12-13 16:01:01,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:01:01,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 2887 transitions. [2022-12-13 16:01:01,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 16:01:01,520 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:01:01,521 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] [2022-12-13 16:01:01,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 16:01:01,521 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:01:01,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:01:01,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1334945468, now seen corresponding path program 1 times [2022-12-13 16:01:01,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:01:01,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758880669] [2022-12-13 16:01:01,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:01:01,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:01:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:01,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:01:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:01,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 16:01:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:01,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 16:01:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:01,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 16:01:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:01,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 16:01:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:01,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:01:01,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:01:01,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758880669] [2022-12-13 16:01:01,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758880669] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:01:01,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:01:01,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:01:01,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777412863] [2022-12-13 16:01:01,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:01:01,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:01:01,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:01:01,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:01:01,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:01:01,662 INFO L87 Difference]: Start difference. First operand 2228 states and 2887 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:01:04,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:01:04,327 INFO L93 Difference]: Finished difference Result 3448 states and 4849 transitions. [2022-12-13 16:01:04,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 16:01:04,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-12-13 16:01:04,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:01:04,332 INFO L225 Difference]: With dead ends: 3448 [2022-12-13 16:01:04,332 INFO L226 Difference]: Without dead ends: 2865 [2022-12-13 16:01:04,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 16:01:04,334 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 1452 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 3038 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 3129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:01:04,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 2202 Invalid, 3129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3038 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 16:01:04,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2022-12-13 16:01:04,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2505. [2022-12-13 16:01:04,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2119 states have (on average 1.339782916470033) internal successors, (2839), 2133 states have internal predecessors, (2839), 203 states have call successors, (203), 134 states have call predecessors, (203), 181 states have return successors, (274), 239 states have call predecessors, (274), 202 states have call successors, (274) [2022-12-13 16:01:04,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 3316 transitions. [2022-12-13 16:01:04,552 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 3316 transitions. Word has length 145 [2022-12-13 16:01:04,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:01:04,552 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 3316 transitions. [2022-12-13 16:01:04,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:01:04,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 3316 transitions. [2022-12-13 16:01:04,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 16:01:04,553 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:01:04,554 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] [2022-12-13 16:01:04,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 16:01:04,554 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:01:04,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:01:04,554 INFO L85 PathProgramCache]: Analyzing trace with hash -2012983942, now seen corresponding path program 1 times [2022-12-13 16:01:04,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:01:04,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256475445] [2022-12-13 16:01:04,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:01:04,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:01:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:04,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:01:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:04,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 16:01:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:04,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 16:01:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:04,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 16:01:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:04,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 16:01:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:04,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:01:04,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:01:04,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256475445] [2022-12-13 16:01:04,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256475445] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:01:04,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:01:04,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:01:04,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599313752] [2022-12-13 16:01:04,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:01:04,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:01:04,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:01:04,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:01:04,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:01:04,685 INFO L87 Difference]: Start difference. First operand 2505 states and 3316 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:01:07,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:01:07,787 INFO L93 Difference]: Finished difference Result 4506 states and 6526 transitions. [2022-12-13 16:01:07,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 16:01:07,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-12-13 16:01:07,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:01:07,794 INFO L225 Difference]: With dead ends: 4506 [2022-12-13 16:01:07,794 INFO L226 Difference]: Without dead ends: 3646 [2022-12-13 16:01:07,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 16:01:07,797 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1450 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 3034 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 3127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-13 16:01:07,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 2200 Invalid, 3127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3034 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-13 16:01:07,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3646 states. [2022-12-13 16:01:08,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3646 to 3060. [2022-12-13 16:01:08,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3060 states, 2624 states have (on average 1.3803353658536586) internal successors, (3622), 2640 states have internal predecessors, (3622), 239 states have call successors, (239), 146 states have call predecessors, (239), 195 states have return successors, (318), 277 states have call predecessors, (318), 238 states have call successors, (318) [2022-12-13 16:01:08,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3060 states to 3060 states and 4179 transitions. [2022-12-13 16:01:08,085 INFO L78 Accepts]: Start accepts. Automaton has 3060 states and 4179 transitions. Word has length 145 [2022-12-13 16:01:08,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:01:08,085 INFO L495 AbstractCegarLoop]: Abstraction has 3060 states and 4179 transitions. [2022-12-13 16:01:08,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:01:08,085 INFO L276 IsEmpty]: Start isEmpty. Operand 3060 states and 4179 transitions. [2022-12-13 16:01:08,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 16:01:08,087 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:01:08,087 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] [2022-12-13 16:01:08,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 16:01:08,087 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:01:08,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:01:08,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1151150340, now seen corresponding path program 1 times [2022-12-13 16:01:08,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:01:08,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975084167] [2022-12-13 16:01:08,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:01:08,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:01:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:08,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:01:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:08,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 16:01:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:08,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 16:01:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:08,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 16:01:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:08,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 16:01:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:08,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:01:08,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:01:08,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975084167] [2022-12-13 16:01:08,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975084167] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:01:08,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:01:08,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:01:08,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696302535] [2022-12-13 16:01:08,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:01:08,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:01:08,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:01:08,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:01:08,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:01:08,212 INFO L87 Difference]: Start difference. First operand 3060 states and 4179 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:01:11,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:01:11,219 INFO L93 Difference]: Finished difference Result 6541 states and 9733 transitions. [2022-12-13 16:01:11,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 16:01:11,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-12-13 16:01:11,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:01:11,227 INFO L225 Difference]: With dead ends: 6541 [2022-12-13 16:01:11,227 INFO L226 Difference]: Without dead ends: 5126 [2022-12-13 16:01:11,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 16:01:11,231 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1446 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 3025 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 3118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:01:11,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 2200 Invalid, 3118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3025 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 16:01:11,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5126 states. [2022-12-13 16:01:11,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5126 to 4171. [2022-12-13 16:01:11,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4171 states, 3635 states have (on average 1.427235213204952) internal successors, (5188), 3655 states have internal predecessors, (5188), 311 states have call successors, (311), 170 states have call predecessors, (311), 223 states have return successors, (412), 353 states have call predecessors, (412), 310 states have call successors, (412) [2022-12-13 16:01:11,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4171 states to 4171 states and 5911 transitions. [2022-12-13 16:01:11,639 INFO L78 Accepts]: Start accepts. Automaton has 4171 states and 5911 transitions. Word has length 145 [2022-12-13 16:01:11,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:01:11,640 INFO L495 AbstractCegarLoop]: Abstraction has 4171 states and 5911 transitions. [2022-12-13 16:01:11,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:01:11,640 INFO L276 IsEmpty]: Start isEmpty. Operand 4171 states and 5911 transitions. [2022-12-13 16:01:11,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 16:01:11,642 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:01:11,642 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] [2022-12-13 16:01:11,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 16:01:11,642 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:01:11,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:01:11,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1093408058, now seen corresponding path program 1 times [2022-12-13 16:01:11,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:01:11,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055292088] [2022-12-13 16:01:11,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:01:11,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:01:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:11,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:01:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:11,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 16:01:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:11,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 16:01:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:11,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 16:01:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:11,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 16:01:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:11,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:01:11,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:01:11,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055292088] [2022-12-13 16:01:11,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055292088] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:01:11,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:01:11,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:01:11,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452758186] [2022-12-13 16:01:11,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:01:11,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:01:11,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:01:11,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:01:11,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:01:11,757 INFO L87 Difference]: Start difference. First operand 4171 states and 5911 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:01:15,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:01:15,105 INFO L93 Difference]: Finished difference Result 10610 states and 16163 transitions. [2022-12-13 16:01:15,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 16:01:15,105 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-12-13 16:01:15,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:01:15,128 INFO L225 Difference]: With dead ends: 10610 [2022-12-13 16:01:15,128 INFO L226 Difference]: Without dead ends: 8084 [2022-12-13 16:01:15,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 16:01:15,132 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1442 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 3016 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 3109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:01:15,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 2200 Invalid, 3109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3016 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 16:01:15,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8084 states. [2022-12-13 16:01:15,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8084 to 6398. [2022-12-13 16:01:15,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6398 states, 5662 states have (on average 1.4705051218650653) internal successors, (8326), 5690 states have internal predecessors, (8326), 455 states have call successors, (455), 218 states have call predecessors, (455), 279 states have return successors, (618), 505 states have call predecessors, (618), 454 states have call successors, (618) [2022-12-13 16:01:15,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6398 states to 6398 states and 9399 transitions. [2022-12-13 16:01:15,775 INFO L78 Accepts]: Start accepts. Automaton has 6398 states and 9399 transitions. Word has length 145 [2022-12-13 16:01:15,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:01:15,775 INFO L495 AbstractCegarLoop]: Abstraction has 6398 states and 9399 transitions. [2022-12-13 16:01:15,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:01:15,775 INFO L276 IsEmpty]: Start isEmpty. Operand 6398 states and 9399 transitions. [2022-12-13 16:01:15,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 16:01:15,778 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:01:15,778 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] [2022-12-13 16:01:15,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 16:01:15,778 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:01:15,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:01:15,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1581455164, now seen corresponding path program 1 times [2022-12-13 16:01:15,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:01:15,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433607002] [2022-12-13 16:01:15,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:01:15,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:01:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:15,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:01:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:15,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 16:01:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:15,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 16:01:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:15,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 16:01:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:15,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 16:01:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:15,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:01:15,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:01:15,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433607002] [2022-12-13 16:01:15,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433607002] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:01:15,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:01:15,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:01:15,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276679792] [2022-12-13 16:01:15,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:01:15,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:01:15,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:01:15,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:01:15,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:01:15,891 INFO L87 Difference]: Start difference. First operand 6398 states and 9399 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:01:18,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:01:18,026 INFO L93 Difference]: Finished difference Result 12915 states and 19874 transitions. [2022-12-13 16:01:18,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:01:18,026 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-12-13 16:01:18,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:01:18,040 INFO L225 Difference]: With dead ends: 12915 [2022-12-13 16:01:18,040 INFO L226 Difference]: Without dead ends: 8162 [2022-12-13 16:01:18,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:01:18,048 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 1106 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:01:18,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 1248 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 16:01:18,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8162 states. [2022-12-13 16:01:18,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8162 to 6398. [2022-12-13 16:01:18,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6398 states, 5662 states have (on average 1.467502649240551) internal successors, (8309), 5690 states have internal predecessors, (8309), 455 states have call successors, (455), 218 states have call predecessors, (455), 279 states have return successors, (618), 505 states have call predecessors, (618), 454 states have call successors, (618) [2022-12-13 16:01:18,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6398 states to 6398 states and 9382 transitions. [2022-12-13 16:01:18,734 INFO L78 Accepts]: Start accepts. Automaton has 6398 states and 9382 transitions. Word has length 145 [2022-12-13 16:01:18,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:01:18,734 INFO L495 AbstractCegarLoop]: Abstraction has 6398 states and 9382 transitions. [2022-12-13 16:01:18,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:01:18,734 INFO L276 IsEmpty]: Start isEmpty. Operand 6398 states and 9382 transitions. [2022-12-13 16:01:18,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 16:01:18,737 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:01:18,737 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] [2022-12-13 16:01:18,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 16:01:18,737 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:01:18,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:01:18,737 INFO L85 PathProgramCache]: Analyzing trace with hash 488819962, now seen corresponding path program 1 times [2022-12-13 16:01:18,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:01:18,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134375856] [2022-12-13 16:01:18,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:01:18,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:01:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:18,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:01:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:18,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 16:01:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:18,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 16:01:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:18,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 16:01:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:18,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 16:01:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:18,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:01:18,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:01:18,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134375856] [2022-12-13 16:01:18,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134375856] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:01:18,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:01:18,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:01:18,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40226431] [2022-12-13 16:01:18,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:01:18,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:01:18,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:01:18,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:01:18,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:01:18,849 INFO L87 Difference]: Start difference. First operand 6398 states and 9382 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:01:20,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:01:20,991 INFO L93 Difference]: Finished difference Result 12897 states and 19788 transitions. [2022-12-13 16:01:20,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:01:20,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-12-13 16:01:20,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:01:21,010 INFO L225 Difference]: With dead ends: 12897 [2022-12-13 16:01:21,010 INFO L226 Difference]: Without dead ends: 8144 [2022-12-13 16:01:21,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:01:21,021 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 1291 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 1429 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:01:21,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1318 Valid, 1041 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1429 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 16:01:21,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8144 states. [2022-12-13 16:01:21,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8144 to 6398. [2022-12-13 16:01:21,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6398 states, 5662 states have (on average 1.4645001766160368) internal successors, (8292), 5690 states have internal predecessors, (8292), 455 states have call successors, (455), 218 states have call predecessors, (455), 279 states have return successors, (618), 505 states have call predecessors, (618), 454 states have call successors, (618) [2022-12-13 16:01:21,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6398 states to 6398 states and 9365 transitions. [2022-12-13 16:01:21,709 INFO L78 Accepts]: Start accepts. Automaton has 6398 states and 9365 transitions. Word has length 145 [2022-12-13 16:01:21,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:01:21,710 INFO L495 AbstractCegarLoop]: Abstraction has 6398 states and 9365 transitions. [2022-12-13 16:01:21,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:01:21,710 INFO L276 IsEmpty]: Start isEmpty. Operand 6398 states and 9365 transitions. [2022-12-13 16:01:21,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 16:01:21,712 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:01:21,712 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] [2022-12-13 16:01:21,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 16:01:21,713 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:01:21,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:01:21,713 INFO L85 PathProgramCache]: Analyzing trace with hash -793352324, now seen corresponding path program 1 times [2022-12-13 16:01:21,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:01:21,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590388920] [2022-12-13 16:01:21,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:01:21,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:01:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:21,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:01:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:21,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 16:01:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:21,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 16:01:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:21,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 16:01:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:21,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 16:01:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:21,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:01:21,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:01:21,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590388920] [2022-12-13 16:01:21,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590388920] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:01:21,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:01:21,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:01:21,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014495230] [2022-12-13 16:01:21,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:01:21,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:01:21,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:01:21,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:01:21,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:01:21,833 INFO L87 Difference]: Start difference. First operand 6398 states and 9365 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:01:25,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:01:25,800 INFO L93 Difference]: Finished difference Result 18692 states and 28809 transitions. [2022-12-13 16:01:25,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 16:01:25,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-12-13 16:01:25,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:01:25,825 INFO L225 Difference]: With dead ends: 18692 [2022-12-13 16:01:25,825 INFO L226 Difference]: Without dead ends: 13939 [2022-12-13 16:01:25,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 16:01:25,834 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 1515 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 2647 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 2768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 16:01:25,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 1546 Invalid, 2768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2647 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 16:01:25,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13939 states. [2022-12-13 16:01:27,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13939 to 10914. [2022-12-13 16:01:27,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10914 states, 9778 states have (on average 1.4953978318674574) internal successors, (14622), 9822 states have internal predecessors, (14622), 743 states have call successors, (743), 314 states have call predecessors, (743), 391 states have return successors, (1084), 809 states have call predecessors, (1084), 742 states have call successors, (1084) [2022-12-13 16:01:27,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10914 states to 10914 states and 16449 transitions. [2022-12-13 16:01:27,178 INFO L78 Accepts]: Start accepts. Automaton has 10914 states and 16449 transitions. Word has length 145 [2022-12-13 16:01:27,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:01:27,178 INFO L495 AbstractCegarLoop]: Abstraction has 10914 states and 16449 transitions. [2022-12-13 16:01:27,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:01:27,178 INFO L276 IsEmpty]: Start isEmpty. Operand 10914 states and 16449 transitions. [2022-12-13 16:01:27,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 16:01:27,182 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:01:27,182 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] [2022-12-13 16:01:27,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 16:01:27,183 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:01:27,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:01:27,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1779612286, now seen corresponding path program 1 times [2022-12-13 16:01:27,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:01:27,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941443889] [2022-12-13 16:01:27,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:01:27,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:01:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:27,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:01:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:27,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 16:01:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:27,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 16:01:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:27,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 16:01:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:27,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 16:01:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:27,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:01:27,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:01:27,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941443889] [2022-12-13 16:01:27,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941443889] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:01:27,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:01:27,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:01:27,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86424930] [2022-12-13 16:01:27,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:01:27,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:01:27,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:01:27,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:01:27,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:01:27,284 INFO L87 Difference]: Start difference. First operand 10914 states and 16449 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:01:30,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:01:30,337 INFO L93 Difference]: Finished difference Result 23347 states and 36376 transitions. [2022-12-13 16:01:30,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:01:30,337 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-12-13 16:01:30,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:01:30,364 INFO L225 Difference]: With dead ends: 23347 [2022-12-13 16:01:30,364 INFO L226 Difference]: Without dead ends: 14078 [2022-12-13 16:01:30,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:01:30,378 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 1288 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 1401 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:01:30,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 1041 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1401 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 16:01:30,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14078 states. [2022-12-13 16:01:31,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14078 to 10914. [2022-12-13 16:01:31,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10914 states, 9778 states have (on average 1.4920229085702599) internal successors, (14589), 9822 states have internal predecessors, (14589), 743 states have call successors, (743), 314 states have call predecessors, (743), 391 states have return successors, (1084), 809 states have call predecessors, (1084), 742 states have call successors, (1084) [2022-12-13 16:01:31,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10914 states to 10914 states and 16416 transitions. [2022-12-13 16:01:31,817 INFO L78 Accepts]: Start accepts. Automaton has 10914 states and 16416 transitions. Word has length 145 [2022-12-13 16:01:31,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:01:31,817 INFO L495 AbstractCegarLoop]: Abstraction has 10914 states and 16416 transitions. [2022-12-13 16:01:31,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:01:31,817 INFO L276 IsEmpty]: Start isEmpty. Operand 10914 states and 16416 transitions. [2022-12-13 16:01:31,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 16:01:31,821 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:01:31,821 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] [2022-12-13 16:01:31,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 16:01:31,822 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:01:31,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:01:31,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1446969148, now seen corresponding path program 1 times [2022-12-13 16:01:31,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:01:31,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669123281] [2022-12-13 16:01:31,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:01:31,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:01:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:31,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:01:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:31,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 16:01:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:31,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 16:01:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:31,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 16:01:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:31,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 16:01:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:31,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:01:31,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:01:31,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669123281] [2022-12-13 16:01:31,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669123281] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:01:31,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:01:31,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:01:31,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539816961] [2022-12-13 16:01:31,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:01:31,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:01:31,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:01:31,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:01:31,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:01:31,937 INFO L87 Difference]: Start difference. First operand 10914 states and 16416 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:01:39,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:01:39,694 INFO L93 Difference]: Finished difference Result 39252 states and 61013 transitions. [2022-12-13 16:01:39,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 16:01:39,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-12-13 16:01:39,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:01:39,755 INFO L225 Difference]: With dead ends: 39252 [2022-12-13 16:01:39,755 INFO L226 Difference]: Without dead ends: 29983 [2022-12-13 16:01:39,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 16:01:39,774 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 1513 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 3483 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 3578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 3483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-13 16:01:39,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 2190 Invalid, 3578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 3483 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-13 16:01:39,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29983 states. [2022-12-13 16:01:42,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29983 to 19908. [2022-12-13 16:01:42,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19908 states, 18004 states have (on average 1.511941790713175) internal successors, (27221), 18080 states have internal predecessors, (27221), 1287 states have call successors, (1287), 506 states have call predecessors, (1287), 615 states have return successors, (2146), 1385 states have call predecessors, (2146), 1286 states have call successors, (2146) [2022-12-13 16:01:42,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19908 states to 19908 states and 30654 transitions. [2022-12-13 16:01:42,625 INFO L78 Accepts]: Start accepts. Automaton has 19908 states and 30654 transitions. Word has length 145 [2022-12-13 16:01:42,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:01:42,626 INFO L495 AbstractCegarLoop]: Abstraction has 19908 states and 30654 transitions. [2022-12-13 16:01:42,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:01:42,626 INFO L276 IsEmpty]: Start isEmpty. Operand 19908 states and 30654 transitions. [2022-12-13 16:01:42,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 16:01:42,635 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:01:42,635 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] [2022-12-13 16:01:42,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 16:01:42,636 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:01:42,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:01:42,636 INFO L85 PathProgramCache]: Analyzing trace with hash -919065922, now seen corresponding path program 1 times [2022-12-13 16:01:42,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:01:42,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426692044] [2022-12-13 16:01:42,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:01:42,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:01:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:42,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:01:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:42,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 16:01:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:42,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 16:01:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:42,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 16:01:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:42,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 16:01:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:42,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:01:42,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:01:42,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426692044] [2022-12-13 16:01:42,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426692044] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:01:42,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:01:42,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:01:42,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253202260] [2022-12-13 16:01:42,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:01:42,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:01:42,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:01:42,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:01:42,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:01:42,768 INFO L87 Difference]: Start difference. First operand 19908 states and 30654 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:01:56,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:01:56,390 INFO L93 Difference]: Finished difference Result 75060 states and 118089 transitions. [2022-12-13 16:01:56,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 16:01:56,391 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-12-13 16:01:56,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:01:56,511 INFO L225 Difference]: With dead ends: 75060 [2022-12-13 16:01:56,511 INFO L226 Difference]: Without dead ends: 56797 [2022-12-13 16:01:56,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 16:01:56,547 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1748 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 2876 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1784 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 2974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:01:56,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1784 Valid, 2186 Invalid, 2974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2876 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 16:01:56,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56797 states. [2022-12-13 16:02:01,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56797 to 37541. [2022-12-13 16:02:01,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37541 states, 34133 states have (on average 1.5234230803035187) internal successors, (51999), 34273 states have internal predecessors, (51999), 2343 states have call successors, (2343), 890 states have call predecessors, (2343), 1063 states have return successors, (4724), 2505 states have call predecessors, (4724), 2342 states have call successors, (4724) [2022-12-13 16:02:01,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37541 states to 37541 states and 59066 transitions. [2022-12-13 16:02:01,816 INFO L78 Accepts]: Start accepts. Automaton has 37541 states and 59066 transitions. Word has length 145 [2022-12-13 16:02:01,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:02:01,816 INFO L495 AbstractCegarLoop]: Abstraction has 37541 states and 59066 transitions. [2022-12-13 16:02:01,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:02:01,816 INFO L276 IsEmpty]: Start isEmpty. Operand 37541 states and 59066 transitions. [2022-12-13 16:02:01,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 16:02:01,826 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:02:01,826 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] [2022-12-13 16:02:01,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 16:02:01,827 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:02:01,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:02:01,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1082820348, now seen corresponding path program 1 times [2022-12-13 16:02:01,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:02:01,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037876453] [2022-12-13 16:02:01,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:02:01,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:02:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:01,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:02:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:01,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 16:02:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:01,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 16:02:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:01,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 16:02:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:01,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 16:02:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:01,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:02:01,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:02:01,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037876453] [2022-12-13 16:02:01,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037876453] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:02:01,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:02:01,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:02:01,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329684188] [2022-12-13 16:02:01,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:02:01,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:02:01,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:02:01,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:02:01,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:02:01,957 INFO L87 Difference]: Start difference. First operand 37541 states and 59066 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:02:26,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:02:26,589 INFO L93 Difference]: Finished difference Result 144531 states and 230695 transitions. [2022-12-13 16:02:26,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 16:02:26,589 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-12-13 16:02:26,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:02:26,907 INFO L225 Difference]: With dead ends: 144531 [2022-12-13 16:02:26,907 INFO L226 Difference]: Without dead ends: 108635 [2022-12-13 16:02:27,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 16:02:27,001 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 1491 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 3367 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 3462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 3367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-13 16:02:27,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 2190 Invalid, 3462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 3367 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-13 16:02:27,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108635 states. [2022-12-13 16:02:38,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108635 to 73062. [2022-12-13 16:02:38,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73062 states, 66710 states have (on average 1.530939889072103) internal successors, (102129), 66978 states have internal predecessors, (102129), 4391 states have call successors, (4391), 1658 states have call predecessors, (4391), 1959 states have return successors, (11274), 4681 states have call predecessors, (11274), 4390 states have call successors, (11274) [2022-12-13 16:02:38,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73062 states to 73062 states and 117794 transitions. [2022-12-13 16:02:38,309 INFO L78 Accepts]: Start accepts. Automaton has 73062 states and 117794 transitions. Word has length 145 [2022-12-13 16:02:38,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:02:38,309 INFO L495 AbstractCegarLoop]: Abstraction has 73062 states and 117794 transitions. [2022-12-13 16:02:38,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:02:38,309 INFO L276 IsEmpty]: Start isEmpty. Operand 73062 states and 117794 transitions. [2022-12-13 16:02:38,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 16:02:38,332 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:02:38,332 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] [2022-12-13 16:02:38,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 16:02:38,332 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:02:38,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:02:38,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1485001986, now seen corresponding path program 1 times [2022-12-13 16:02:38,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:02:38,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024724888] [2022-12-13 16:02:38,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:02:38,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:02:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:38,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:02:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:38,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 16:02:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:38,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 16:02:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:38,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 16:02:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:38,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 16:02:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:38,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:02:38,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:02:38,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024724888] [2022-12-13 16:02:38,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024724888] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:02:38,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:02:38,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:02:38,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94158363] [2022-12-13 16:02:38,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:02:38,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:02:38,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:02:38,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:02:38,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:02:38,450 INFO L87 Difference]: Start difference. First operand 73062 states and 117794 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:03:32,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:03:32,064 INFO L93 Difference]: Finished difference Result 281938 states and 459373 transitions. [2022-12-13 16:03:32,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 16:03:32,064 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-12-13 16:03:32,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:03:32,769 INFO L225 Difference]: With dead ends: 281938 [2022-12-13 16:03:32,769 INFO L226 Difference]: Without dead ends: 210521 [2022-12-13 16:03:32,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 16:03:32,957 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 1669 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 2851 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 2949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-13 16:03:32,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 2190 Invalid, 2949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2851 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-13 16:03:33,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210521 states. [2022-12-13 16:03:56,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210521 to 143975. [2022-12-13 16:03:56,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143975 states, 131863 states have (on average 1.5357985181589984) internal successors, (202515), 132387 states have internal predecessors, (202515), 8359 states have call successors, (8359), 3194 states have call predecessors, (8359), 3751 states have return successors, (28620), 8905 states have call predecessors, (28620), 8358 states have call successors, (28620) [2022-12-13 16:03:57,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143975 states to 143975 states and 239494 transitions. [2022-12-13 16:03:57,257 INFO L78 Accepts]: Start accepts. Automaton has 143975 states and 239494 transitions. Word has length 145 [2022-12-13 16:03:57,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:03:57,257 INFO L495 AbstractCegarLoop]: Abstraction has 143975 states and 239494 transitions. [2022-12-13 16:03:57,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:03:57,257 INFO L276 IsEmpty]: Start isEmpty. Operand 143975 states and 239494 transitions. [2022-12-13 16:03:57,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 16:03:57,384 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:03:57,385 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] [2022-12-13 16:03:57,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 16:03:57,385 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:03:57,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:03:57,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1013645636, now seen corresponding path program 1 times [2022-12-13 16:03:57,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:03:57,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685937968] [2022-12-13 16:03:57,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:57,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:03:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:57,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:03:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:57,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 16:03:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:57,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 16:03:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:57,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 16:03:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:57,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 16:03:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:57,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:03:57,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:57,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685937968] [2022-12-13 16:03:57,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685937968] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:03:57,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:03:57,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:03:57,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260407231] [2022-12-13 16:03:57,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:03:57,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:03:57,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:57,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:03:57,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:03:57,517 INFO L87 Difference]: Start difference. First operand 143975 states and 239494 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:05:37,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:05:37,533 INFO L93 Difference]: Finished difference Result 552017 states and 926675 transitions. [2022-12-13 16:05:37,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 16:05:37,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-12-13 16:05:37,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:05:39,227 INFO L225 Difference]: With dead ends: 552017 [2022-12-13 16:05:39,227 INFO L226 Difference]: Without dead ends: 409687 [2022-12-13 16:05:39,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 16:05:39,630 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 1635 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 2833 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 2931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 16:05:39,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1671 Valid, 2190 Invalid, 2931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2833 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 16:05:39,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409687 states. [2022-12-13 16:06:28,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409687 to 285544. [2022-12-13 16:06:29,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285544 states, 262168 states have (on average 1.5392458271032314) internal successors, (403541), 263204 states have internal predecessors, (403541), 16039 states have call successors, (16039), 6266 states have call predecessors, (16039), 7335 states have return successors, (76178), 17097 states have call predecessors, (76178), 16038 states have call successors, (76178) [2022-12-13 16:06:30,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285544 states to 285544 states and 495758 transitions. [2022-12-13 16:06:30,356 INFO L78 Accepts]: Start accepts. Automaton has 285544 states and 495758 transitions. Word has length 145 [2022-12-13 16:06:30,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:06:30,357 INFO L495 AbstractCegarLoop]: Abstraction has 285544 states and 495758 transitions. [2022-12-13 16:06:30,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:06:30,357 INFO L276 IsEmpty]: Start isEmpty. Operand 285544 states and 495758 transitions. [2022-12-13 16:06:30,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 16:06:30,447 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:06:30,447 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] [2022-12-13 16:06:30,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 16:06:30,447 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:06:30,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:06:30,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1633958718, now seen corresponding path program 1 times [2022-12-13 16:06:30,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:06:30,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646627182] [2022-12-13 16:06:30,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:06:30,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:06:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:06:30,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:06:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:06:30,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 16:06:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:06:30,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 16:06:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:06:30,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 16:06:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:06:30,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 16:06:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:06:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:06:30,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:06:30,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646627182] [2022-12-13 16:06:30,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646627182] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:06:30,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:06:30,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:06:30,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981920577] [2022-12-13 16:06:30,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:06:30,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:06:30,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:06:30,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:06:30,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:06:30,562 INFO L87 Difference]: Start difference. First operand 285544 states and 495758 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:09:30,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:09:30,816 INFO L93 Difference]: Finished difference Result 1067342 states and 1876133 transitions. [2022-12-13 16:09:30,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 16:09:30,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-12-13 16:09:30,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:09:34,498 INFO L225 Difference]: With dead ends: 1067342 [2022-12-13 16:09:34,498 INFO L226 Difference]: Without dead ends: 783443 [2022-12-13 16:09:35,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 16:09:35,643 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 1625 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 2565 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1661 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 2689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:09:35,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1661 Valid, 1542 Invalid, 2689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 2565 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 16:09:36,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783443 states. [2022-12-13 16:11:14,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783443 to 569194. [2022-12-13 16:11:15,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569194 states, 523802 states have (on average 1.5428597065303302) internal successors, (808153), 525862 states have internal predecessors, (808153), 30887 states have call successors, (30887), 12410 states have call predecessors, (30887), 14503 states have return successors, (210148), 32969 states have call predecessors, (210148), 30886 states have call successors, (210148) [2022-12-13 16:11:18,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569194 states to 569194 states and 1049188 transitions. [2022-12-13 16:11:18,256 INFO L78 Accepts]: Start accepts. Automaton has 569194 states and 1049188 transitions. Word has length 145 [2022-12-13 16:11:18,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:11:18,256 INFO L495 AbstractCegarLoop]: Abstraction has 569194 states and 1049188 transitions. [2022-12-13 16:11:18,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:11:18,256 INFO L276 IsEmpty]: Start isEmpty. Operand 569194 states and 1049188 transitions. [2022-12-13 16:11:18,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 16:11:18,639 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:11:18,640 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] [2022-12-13 16:11:18,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 16:11:18,640 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:11:18,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:11:18,640 INFO L85 PathProgramCache]: Analyzing trace with hash 595374144, now seen corresponding path program 1 times [2022-12-13 16:11:18,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:11:18,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913723307] [2022-12-13 16:11:18,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:11:18,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:11:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:18,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:11:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:18,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 16:11:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:18,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 16:11:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:18,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 16:11:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:18,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 16:11:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:11:18,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:11:18,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913723307] [2022-12-13 16:11:18,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913723307] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:11:18,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:11:18,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:11:18,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129473271] [2022-12-13 16:11:18,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:11:18,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:11:18,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:11:18,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:11:18,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:11:18,799 INFO L87 Difference]: Start difference. First operand 569194 states and 1049188 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)