./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/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_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/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_8b59a2d7-46ed-4564-9132-37fbed9c539b/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 52de5146a3a24866d31d2076a85235f80d04004402c35cfcf3c3304704a7fec0 --- 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 13:10:57,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:10:57,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:10:57,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:10:57,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:10:57,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:10:57,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:10:57,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:10:57,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:10:57,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:10:57,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:10:57,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:10:57,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:10:57,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:10:57,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:10:57,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:10:57,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:10:57,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:10:57,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:10:57,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:10:57,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:10:57,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:10:57,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:10:57,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:10:57,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:10:57,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:10:57,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:10:57,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:10:57,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:10:57,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:10:57,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:10:57,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:10:57,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:10:57,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:10:57,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:10:57,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:10:57,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:10:57,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:10:57,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:10:57,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:10:57,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:10:57,217 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 13:10:57,232 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:10:57,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:10:57,233 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:10:57,233 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:10:57,233 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:10:57,233 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:10:57,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:10:57,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:10:57,234 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:10:57,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:10:57,234 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:10:57,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:10:57,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:10:57,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:10:57,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:10:57,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:10:57,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:10:57,235 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:10:57,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:10:57,236 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:10:57,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:10:57,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:10:57,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:10:57,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:10:57,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:10:57,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:10:57,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:10:57,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:10:57,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:10:57,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:10:57,237 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:10:57,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:10:57,237 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:10:57,237 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:10:57,237 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:10:57,237 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_8b59a2d7-46ed-4564-9132-37fbed9c539b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52de5146a3a24866d31d2076a85235f80d04004402c35cfcf3c3304704a7fec0 [2022-12-13 13:10:57,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:10:57,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:10:57,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:10:57,429 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:10:57,429 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:10:57,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-1.c [2022-12-13 13:11:00,007 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:11:00,192 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:11:00,193 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-1.c [2022-12-13 13:11:00,204 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/data/98d18ade6/ba96e867d4f8451b8a1a2b68a693ed84/FLAG67c35d1b1 [2022-12-13 13:11:00,216 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/data/98d18ade6/ba96e867d4f8451b8a1a2b68a693ed84 [2022-12-13 13:11:00,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:11:00,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:11:00,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:11:00,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:11:00,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:11:00,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:11:00" (1/1) ... [2022-12-13 13:11:00,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3850004e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:11:00, skipping insertion in model container [2022-12-13 13:11:00,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:11:00" (1/1) ... [2022-12-13 13:11:00,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:11:00,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:11:00,413 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_8b59a2d7-46ed-4564-9132-37fbed9c539b/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-1.c[914,927] [2022-12-13 13:11:00,462 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_8b59a2d7-46ed-4564-9132-37fbed9c539b/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-1.c[7115,7128] [2022-12-13 13:11:00,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:11:00,528 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:11:00,539 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_8b59a2d7-46ed-4564-9132-37fbed9c539b/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-1.c[914,927] [2022-12-13 13:11:00,555 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_8b59a2d7-46ed-4564-9132-37fbed9c539b/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-1.c[7115,7128] [2022-12-13 13:11:00,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:11:00,600 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:11:00,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:11:00 WrapperNode [2022-12-13 13:11:00,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:11:00,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:11:00,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:11:00,602 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:11:00,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:11:00" (1/1) ... [2022-12-13 13:11:00,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:11:00" (1/1) ... [2022-12-13 13:11:00,656 INFO L138 Inliner]: procedures = 63, calls = 72, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 634 [2022-12-13 13:11:00,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:11:00,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:11:00,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:11:00,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:11:00,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:11:00" (1/1) ... [2022-12-13 13:11:00,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:11:00" (1/1) ... [2022-12-13 13:11:00,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:11:00" (1/1) ... [2022-12-13 13:11:00,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:11:00" (1/1) ... [2022-12-13 13:11:00,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:11:00" (1/1) ... [2022-12-13 13:11:00,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:11:00" (1/1) ... [2022-12-13 13:11:00,693 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:11:00" (1/1) ... [2022-12-13 13:11:00,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:11:00" (1/1) ... [2022-12-13 13:11:00,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:11:00,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:11:00,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:11:00,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:11:00,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:11:00" (1/1) ... [2022-12-13 13:11:00,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:11:00,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:11:00,725 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:11:00,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:11:00,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:11:00,760 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-13 13:11:00,761 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-13 13:11:00,761 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-12-13 13:11:00,761 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-12-13 13:11:00,761 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-12-13 13:11:00,761 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-12-13 13:11:00,761 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-12-13 13:11:00,761 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-12-13 13:11:00,762 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-12-13 13:11:00,762 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-12-13 13:11:00,762 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-12-13 13:11:00,762 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-12-13 13:11:00,762 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-12-13 13:11:00,763 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-12-13 13:11:00,763 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-12-13 13:11:00,763 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-12-13 13:11:00,763 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-12-13 13:11:00,763 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-12-13 13:11:00,763 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-12-13 13:11:00,763 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-12-13 13:11:00,763 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-12-13 13:11:00,764 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-12-13 13:11:00,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:11:00,764 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-12-13 13:11:00,764 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-12-13 13:11:00,764 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-12-13 13:11:00,764 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-12-13 13:11:00,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:11:00,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:11:00,765 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-12-13 13:11:00,765 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-12-13 13:11:00,847 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:11:00,849 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:11:01,339 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:11:01,349 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:11:01,349 INFO L300 CfgBuilder]: Removed 12 assume(true) statements. [2022-12-13 13:11:01,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:11:01 BoogieIcfgContainer [2022-12-13 13:11:01,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:11:01,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:11:01,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:11:01,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:11:01,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:11:00" (1/3) ... [2022-12-13 13:11:01,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64010905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:11:01, skipping insertion in model container [2022-12-13 13:11:01,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:11:00" (2/3) ... [2022-12-13 13:11:01,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64010905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:11:01, skipping insertion in model container [2022-12-13 13:11:01,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:11:01" (3/3) ... [2022-12-13 13:11:01,360 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.05.cil-1.c [2022-12-13 13:11:01,389 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:11:01,389 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 13:11:01,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:11:01,450 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;@2bf36701, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:11:01,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 13:11:01,456 INFO L276 IsEmpty]: Start isEmpty. Operand has 308 states, 258 states have (on average 1.5968992248062015) internal successors, (412), 264 states have internal predecessors, (412), 33 states have call successors, (33), 14 states have call predecessors, (33), 14 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2022-12-13 13:11:01,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 13:11:01,464 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:01,464 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 13:11:01,465 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:01,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:01,469 INFO L85 PathProgramCache]: Analyzing trace with hash -2128266520, now seen corresponding path program 1 times [2022-12-13 13:11:01,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:01,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065480227] [2022-12-13 13:11:01,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:01,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:01,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:01,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:11:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:01,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 13:11:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:01,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:11:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:01,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 13:11:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:01,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 13:11:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:01,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 13:11:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:01,768 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 13:11:01,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:01,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065480227] [2022-12-13 13:11:01,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065480227] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:01,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:01,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:11:01,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470400071] [2022-12-13 13:11:01,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:01,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:11:01,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:01,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:11:01,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:11:01,809 INFO L87 Difference]: Start difference. First operand has 308 states, 258 states have (on average 1.5968992248062015) internal successors, (412), 264 states have internal predecessors, (412), 33 states have call successors, (33), 14 states have call predecessors, (33), 14 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 13:11:02,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:02,428 INFO L93 Difference]: Finished difference Result 613 states and 949 transitions. [2022-12-13 13:11:02,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:11:02,430 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-12-13 13:11:02,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:02,439 INFO L225 Difference]: With dead ends: 613 [2022-12-13 13:11:02,439 INFO L226 Difference]: Without dead ends: 316 [2022-12-13 13:11:02,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 13:11:02,444 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 476 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:02,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 1024 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 13:11:02,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-12-13 13:11:02,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 298. [2022-12-13 13:11:02,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 250 states have (on average 1.5) internal successors, (375), 254 states have internal predecessors, (375), 33 states have call successors, (33), 14 states have call predecessors, (33), 13 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-12-13 13:11:02,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 439 transitions. [2022-12-13 13:11:02,494 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 439 transitions. Word has length 65 [2022-12-13 13:11:02,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:02,494 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 439 transitions. [2022-12-13 13:11:02,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 13:11:02,494 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 439 transitions. [2022-12-13 13:11:02,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 13:11:02,496 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:02,496 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 13:11:02,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:11:02,497 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:02,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:02,497 INFO L85 PathProgramCache]: Analyzing trace with hash 779915366, now seen corresponding path program 1 times [2022-12-13 13:11:02,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:02,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717406104] [2022-12-13 13:11:02,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:02,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:02,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:02,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:11:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:02,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 13:11:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:02,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:11:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:02,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 13:11:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:02,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 13:11:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:02,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 13:11:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:02,658 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 13:11:02,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:02,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717406104] [2022-12-13 13:11:02,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717406104] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:02,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:02,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 13:11:02,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625814894] [2022-12-13 13:11:02,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:02,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 13:11:02,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:02,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 13:11:02,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:11:02,662 INFO L87 Difference]: Start difference. First operand 298 states and 439 transitions. 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 13:11:03,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:03,391 INFO L93 Difference]: Finished difference Result 521 states and 753 transitions. [2022-12-13 13:11:03,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 13:11:03,391 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 13:11:03,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:03,394 INFO L225 Difference]: With dead ends: 521 [2022-12-13 13:11:03,395 INFO L226 Difference]: Without dead ends: 433 [2022-12-13 13:11:03,396 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 13:11:03,397 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 574 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:03,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 1454 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 13:11:03,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-12-13 13:11:03,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 394. [2022-12-13 13:11:03,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 326 states have (on average 1.469325153374233) internal successors, (479), 332 states have internal predecessors, (479), 44 states have call successors, (44), 21 states have call predecessors, (44), 22 states have return successors, (47), 43 states have call predecessors, (47), 42 states have call successors, (47) [2022-12-13 13:11:03,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 570 transitions. [2022-12-13 13:11:03,439 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 570 transitions. Word has length 65 [2022-12-13 13:11:03,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:03,440 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 570 transitions. [2022-12-13 13:11:03,440 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 13:11:03,440 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 570 transitions. [2022-12-13 13:11:03,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 13:11:03,442 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:03,443 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 13:11:03,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:11:03,443 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:03,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:03,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1836163290, now seen corresponding path program 1 times [2022-12-13 13:11:03,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:03,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931162711] [2022-12-13 13:11:03,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:03,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:03,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:03,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:11:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:03,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 13:11:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:03,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:11:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:03,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 13:11:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:03,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 13:11:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:03,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 13:11:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:03,605 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 13:11:03,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:03,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931162711] [2022-12-13 13:11:03,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931162711] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:03,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:03,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 13:11:03,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233055162] [2022-12-13 13:11:03,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:03,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 13:11:03,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:03,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 13:11:03,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:11:03,607 INFO L87 Difference]: Start difference. First operand 394 states and 570 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 13:11:04,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:04,439 INFO L93 Difference]: Finished difference Result 741 states and 1046 transitions. [2022-12-13 13:11:04,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 13:11:04,439 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 13:11:04,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:04,444 INFO L225 Difference]: With dead ends: 741 [2022-12-13 13:11:04,444 INFO L226 Difference]: Without dead ends: 564 [2022-12-13 13:11:04,446 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 13:11:04,447 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 845 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:04,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 1546 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 13:11:04,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-12-13 13:11:04,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 490. [2022-12-13 13:11:04,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 402 states have (on average 1.4477611940298507) internal successors, (582), 410 states have internal predecessors, (582), 55 states have call successors, (55), 28 states have call predecessors, (55), 31 states have return successors, (66), 55 states have call predecessors, (66), 53 states have call successors, (66) [2022-12-13 13:11:04,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 703 transitions. [2022-12-13 13:11:04,493 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 703 transitions. Word has length 65 [2022-12-13 13:11:04,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:04,493 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 703 transitions. [2022-12-13 13:11:04,493 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 13:11:04,493 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 703 transitions. [2022-12-13 13:11:04,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 13:11:04,497 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:04,497 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 13:11:04,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:11:04,498 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:04,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:04,498 INFO L85 PathProgramCache]: Analyzing trace with hash 430217896, now seen corresponding path program 1 times [2022-12-13 13:11:04,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:04,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556190539] [2022-12-13 13:11:04,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:04,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:04,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:04,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:11:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:04,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 13:11:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:04,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:11:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:04,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 13:11:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:04,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 13:11:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:04,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 13:11:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:04,657 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 13:11:04,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:04,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556190539] [2022-12-13 13:11:04,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556190539] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:04,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:04,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 13:11:04,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487415106] [2022-12-13 13:11:04,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:04,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:11:04,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:04,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:11:04,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:11:04,659 INFO L87 Difference]: Start difference. First operand 490 states and 703 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 13:11:05,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:05,356 INFO L93 Difference]: Finished difference Result 791 states and 1117 transitions. [2022-12-13 13:11:05,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 13:11:05,356 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 13:11:05,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:05,358 INFO L225 Difference]: With dead ends: 791 [2022-12-13 13:11:05,358 INFO L226 Difference]: Without dead ends: 524 [2022-12-13 13:11:05,359 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 13:11:05,360 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 555 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:05,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 1541 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 13:11:05,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-12-13 13:11:05,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 495. [2022-12-13 13:11:05,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 406 states have (on average 1.438423645320197) internal successors, (584), 414 states have internal predecessors, (584), 55 states have call successors, (55), 28 states have call predecessors, (55), 32 states have return successors, (67), 56 states have call predecessors, (67), 53 states have call successors, (67) [2022-12-13 13:11:05,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 706 transitions. [2022-12-13 13:11:05,381 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 706 transitions. Word has length 65 [2022-12-13 13:11:05,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:05,382 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 706 transitions. [2022-12-13 13:11:05,382 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 13:11:05,382 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 706 transitions. [2022-12-13 13:11:05,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 13:11:05,383 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:05,383 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 13:11:05,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:11:05,383 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:05,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:05,384 INFO L85 PathProgramCache]: Analyzing trace with hash -599141402, now seen corresponding path program 1 times [2022-12-13 13:11:05,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:05,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828754721] [2022-12-13 13:11:05,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:05,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:05,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:05,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:11:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:05,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 13:11:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:05,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:11:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:05,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 13:11:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:05,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 13:11:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:05,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 13:11:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:05,501 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 13:11:05,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:05,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828754721] [2022-12-13 13:11:05,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828754721] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:05,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:05,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 13:11:05,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009678751] [2022-12-13 13:11:05,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:05,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:11:05,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:05,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:11:05,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:11:05,504 INFO L87 Difference]: Start difference. First operand 495 states and 706 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 13:11:06,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:06,207 INFO L93 Difference]: Finished difference Result 813 states and 1139 transitions. [2022-12-13 13:11:06,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 13:11:06,207 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 13:11:06,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:06,210 INFO L225 Difference]: With dead ends: 813 [2022-12-13 13:11:06,210 INFO L226 Difference]: Without dead ends: 541 [2022-12-13 13:11:06,211 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 13:11:06,212 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 377 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:06,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 1731 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 13:11:06,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-12-13 13:11:06,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 510. [2022-12-13 13:11:06,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 418 states have (on average 1.4258373205741626) internal successors, (596), 426 states have internal predecessors, (596), 55 states have call successors, (55), 28 states have call predecessors, (55), 35 states have return successors, (70), 59 states have call predecessors, (70), 53 states have call successors, (70) [2022-12-13 13:11:06,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 721 transitions. [2022-12-13 13:11:06,245 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 721 transitions. Word has length 65 [2022-12-13 13:11:06,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:06,245 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 721 transitions. [2022-12-13 13:11:06,246 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 13:11:06,246 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 721 transitions. [2022-12-13 13:11:06,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 13:11:06,246 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:06,247 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 13:11:06,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 13:11:06,247 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:06,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:06,247 INFO L85 PathProgramCache]: Analyzing trace with hash 787061992, now seen corresponding path program 1 times [2022-12-13 13:11:06,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:06,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750807354] [2022-12-13 13:11:06,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:06,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:06,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:06,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:11:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:06,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 13:11:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:06,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:11:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:06,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 13:11:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:06,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 13:11:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:06,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 13:11:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:06,370 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 13:11:06,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:06,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750807354] [2022-12-13 13:11:06,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750807354] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:06,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:06,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 13:11:06,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875116940] [2022-12-13 13:11:06,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:06,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 13:11:06,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:06,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 13:11:06,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:11:06,373 INFO L87 Difference]: Start difference. First operand 510 states and 721 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 13:11:07,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:07,101 INFO L93 Difference]: Finished difference Result 902 states and 1232 transitions. [2022-12-13 13:11:07,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 13:11:07,102 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 13:11:07,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:07,104 INFO L225 Difference]: With dead ends: 902 [2022-12-13 13:11:07,104 INFO L226 Difference]: Without dead ends: 617 [2022-12-13 13:11:07,104 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 13:11:07,105 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 1076 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:07,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 1122 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 13:11:07,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-12-13 13:11:07,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 522. [2022-12-13 13:11:07,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 428 states have (on average 1.4158878504672898) internal successors, (606), 436 states have internal predecessors, (606), 56 states have call successors, (56), 29 states have call predecessors, (56), 36 states have return successors, (69), 60 states have call predecessors, (69), 54 states have call successors, (69) [2022-12-13 13:11:07,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 731 transitions. [2022-12-13 13:11:07,139 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 731 transitions. Word has length 65 [2022-12-13 13:11:07,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:07,139 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 731 transitions. [2022-12-13 13:11:07,140 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 13:11:07,140 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 731 transitions. [2022-12-13 13:11:07,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 13:11:07,141 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:07,142 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 13:11:07,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 13:11:07,142 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:07,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:07,142 INFO L85 PathProgramCache]: Analyzing trace with hash 653048486, now seen corresponding path program 1 times [2022-12-13 13:11:07,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:07,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48345472] [2022-12-13 13:11:07,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:07,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:07,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:07,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:11:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:07,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 13:11:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:07,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:11:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:07,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 13:11:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:07,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 13:11:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:07,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 13:11:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:07,221 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 13:11:07,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:07,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48345472] [2022-12-13 13:11:07,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48345472] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:07,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:07,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:11:07,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179243035] [2022-12-13 13:11:07,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:07,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:11:07,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:07,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:11:07,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:11:07,223 INFO L87 Difference]: Start difference. First operand 522 states and 731 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 13:11:07,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:07,774 INFO L93 Difference]: Finished difference Result 1164 states and 1575 transitions. [2022-12-13 13:11:07,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 13:11:07,775 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 13:11:07,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:07,781 INFO L225 Difference]: With dead ends: 1164 [2022-12-13 13:11:07,781 INFO L226 Difference]: Without dead ends: 868 [2022-12-13 13:11:07,782 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 13:11:07,783 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 845 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:07,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 1061 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 13:11:07,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2022-12-13 13:11:07,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 812. [2022-12-13 13:11:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 652 states have (on average 1.3650306748466257) internal successors, (890), 667 states have internal predecessors, (890), 91 states have call successors, (91), 51 states have call predecessors, (91), 67 states have return successors, (126), 100 states have call predecessors, (126), 89 states have call successors, (126) [2022-12-13 13:11:07,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1107 transitions. [2022-12-13 13:11:07,843 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1107 transitions. Word has length 65 [2022-12-13 13:11:07,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:07,843 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 1107 transitions. [2022-12-13 13:11:07,843 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 13:11:07,843 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1107 transitions. [2022-12-13 13:11:07,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 13:11:07,846 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:07,846 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, 1] [2022-12-13 13:11:07,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 13:11:07,846 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:07,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:07,847 INFO L85 PathProgramCache]: Analyzing trace with hash -547287697, now seen corresponding path program 1 times [2022-12-13 13:11:07,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:07,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391791479] [2022-12-13 13:11:07,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:07,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:07,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:07,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:11:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:07,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 13:11:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:07,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:11:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:07,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 13:11:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:07,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 13:11:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:07,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 13:11:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:07,912 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 13:11:07,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:07,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391791479] [2022-12-13 13:11:07,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391791479] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:07,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:07,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:11:07,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544924399] [2022-12-13 13:11:07,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:07,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:11:07,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:07,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:11:07,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:11:07,914 INFO L87 Difference]: Start difference. First operand 812 states and 1107 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 13:11:08,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:08,346 INFO L93 Difference]: Finished difference Result 2015 states and 2674 transitions. [2022-12-13 13:11:08,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 13:11:08,347 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 13:11:08,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:08,353 INFO L225 Difference]: With dead ends: 2015 [2022-12-13 13:11:08,353 INFO L226 Difference]: Without dead ends: 1408 [2022-12-13 13:11:08,355 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 13:11:08,355 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 780 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:08,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 837 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 13:11:08,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2022-12-13 13:11:08,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1293. [2022-12-13 13:11:08,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1031 states have (on average 1.3317167798254121) internal successors, (1373), 1049 states have internal predecessors, (1373), 136 states have call successors, (136), 95 states have call predecessors, (136), 124 states have return successors, (198), 155 states have call predecessors, (198), 134 states have call successors, (198) [2022-12-13 13:11:08,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1707 transitions. [2022-12-13 13:11:08,442 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1707 transitions. Word has length 66 [2022-12-13 13:11:08,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:08,443 INFO L495 AbstractCegarLoop]: Abstraction has 1293 states and 1707 transitions. [2022-12-13 13:11:08,443 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 13:11:08,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1707 transitions. [2022-12-13 13:11:08,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 13:11:08,445 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:08,445 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 13:11:08,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 13:11:08,445 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:08,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:08,446 INFO L85 PathProgramCache]: Analyzing trace with hash 910951962, now seen corresponding path program 1 times [2022-12-13 13:11:08,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:08,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665934402] [2022-12-13 13:11:08,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:08,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:08,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:08,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:11:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:08,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 13:11:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:08,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:11:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:08,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 13:11:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:08,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 13:11:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:08,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 13:11:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:08,509 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 13:11:08,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:08,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665934402] [2022-12-13 13:11:08,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665934402] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:08,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:08,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:11:08,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360944911] [2022-12-13 13:11:08,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:08,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:11:08,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:08,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:11:08,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:11:08,511 INFO L87 Difference]: Start difference. First operand 1293 states and 1707 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 13:11:08,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:08,977 INFO L93 Difference]: Finished difference Result 3481 states and 4513 transitions. [2022-12-13 13:11:08,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 13:11:08,977 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 13:11:08,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:08,984 INFO L225 Difference]: With dead ends: 3481 [2022-12-13 13:11:08,984 INFO L226 Difference]: Without dead ends: 2413 [2022-12-13 13:11:08,987 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 13:11:08,987 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 1066 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:08,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 686 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 13:11:08,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2022-12-13 13:11:09,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 2155. [2022-12-13 13:11:09,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 1697 states have (on average 1.296405421331762) internal successors, (2200), 1725 states have internal predecessors, (2200), 234 states have call successors, (234), 179 states have call predecessors, (234), 222 states have return successors, (334), 257 states have call predecessors, (334), 232 states have call successors, (334) [2022-12-13 13:11:09,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 2768 transitions. [2022-12-13 13:11:09,115 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 2768 transitions. Word has length 66 [2022-12-13 13:11:09,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:09,115 INFO L495 AbstractCegarLoop]: Abstraction has 2155 states and 2768 transitions. [2022-12-13 13:11:09,115 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 13:11:09,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 2768 transitions. [2022-12-13 13:11:09,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-13 13:11:09,118 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:09,118 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 13:11:09,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 13:11:09,118 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:09,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:09,118 INFO L85 PathProgramCache]: Analyzing trace with hash 680194510, now seen corresponding path program 1 times [2022-12-13 13:11:09,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:09,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236194593] [2022-12-13 13:11:09,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:09,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:09,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:09,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:11:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:09,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 13:11:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:09,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:11:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:09,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 13:11:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:09,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 13:11:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:09,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 13:11:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:09,170 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 13:11:09,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:09,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236194593] [2022-12-13 13:11:09,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236194593] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:09,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:09,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:11:09,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992693327] [2022-12-13 13:11:09,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:09,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:11:09,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:09,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:11:09,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:11:09,171 INFO L87 Difference]: Start difference. First operand 2155 states and 2768 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 13:11:09,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:09,693 INFO L93 Difference]: Finished difference Result 5065 states and 6418 transitions. [2022-12-13 13:11:09,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 13:11:09,693 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 13:11:09,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:09,702 INFO L225 Difference]: With dead ends: 5065 [2022-12-13 13:11:09,702 INFO L226 Difference]: Without dead ends: 3135 [2022-12-13 13:11:09,705 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 13:11:09,705 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 834 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:09,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 922 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 13:11:09,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2022-12-13 13:11:09,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 2887. [2022-12-13 13:11:09,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2887 states, 2265 states have (on average 1.2821192052980133) internal successors, (2904), 2301 states have internal predecessors, (2904), 314 states have call successors, (314), 249 states have call predecessors, (314), 306 states have return successors, (443), 343 states have call predecessors, (443), 312 states have call successors, (443) [2022-12-13 13:11:09,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 3661 transitions. [2022-12-13 13:11:09,829 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 3661 transitions. Word has length 72 [2022-12-13 13:11:09,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:09,830 INFO L495 AbstractCegarLoop]: Abstraction has 2887 states and 3661 transitions. [2022-12-13 13:11:09,830 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 13:11:09,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 3661 transitions. [2022-12-13 13:11:09,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-13 13:11:09,831 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:09,831 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 13:11:09,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 13:11:09,832 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:09,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:09,832 INFO L85 PathProgramCache]: Analyzing trace with hash -905222844, now seen corresponding path program 1 times [2022-12-13 13:11:09,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:09,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023460964] [2022-12-13 13:11:09,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:09,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:09,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:09,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:11:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:09,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 13:11:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:09,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:11:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:09,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 13:11:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:09,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 13:11:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:09,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 13:11:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:09,897 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 13:11:09,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:09,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023460964] [2022-12-13 13:11:09,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023460964] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:09,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:09,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:11:09,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570022621] [2022-12-13 13:11:09,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:09,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:11:09,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:09,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:11:09,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:11:09,899 INFO L87 Difference]: Start difference. First operand 2887 states and 3661 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 13:11:10,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:10,488 INFO L93 Difference]: Finished difference Result 3661 states and 4592 transitions. [2022-12-13 13:11:10,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 13:11:10,489 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 13:11:10,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:10,498 INFO L225 Difference]: With dead ends: 3661 [2022-12-13 13:11:10,498 INFO L226 Difference]: Without dead ends: 3658 [2022-12-13 13:11:10,500 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 13:11:10,500 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 1277 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:10,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1287 Valid, 896 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 13:11:10,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3658 states. [2022-12-13 13:11:10,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3658 to 3381. [2022-12-13 13:11:10,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3381 states, 2650 states have (on average 1.2739622641509434) internal successors, (3376), 2691 states have internal predecessors, (3376), 364 states have call successors, (364), 293 states have call predecessors, (364), 365 states have return successors, (522), 403 states have call predecessors, (522), 363 states have call successors, (522) [2022-12-13 13:11:10,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3381 states to 3381 states and 4262 transitions. [2022-12-13 13:11:10,678 INFO L78 Accepts]: Start accepts. Automaton has 3381 states and 4262 transitions. Word has length 73 [2022-12-13 13:11:10,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:10,678 INFO L495 AbstractCegarLoop]: Abstraction has 3381 states and 4262 transitions. [2022-12-13 13:11:10,678 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 13:11:10,678 INFO L276 IsEmpty]: Start isEmpty. Operand 3381 states and 4262 transitions. [2022-12-13 13:11:10,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-13 13:11:10,680 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:10,680 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 13:11:10,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 13:11:10,681 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:10,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:10,681 INFO L85 PathProgramCache]: Analyzing trace with hash 2001942744, now seen corresponding path program 1 times [2022-12-13 13:11:10,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:10,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855828] [2022-12-13 13:11:10,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:10,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:10,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:10,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:11:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:10,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 13:11:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:10,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:11:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:10,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 13:11:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:10,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 13:11:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:10,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 13:11:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:10,817 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 13:11:10,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:10,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855828] [2022-12-13 13:11:10,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855828] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:11:10,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343362617] [2022-12-13 13:11:10,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:10,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:11:10,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:11:10,819 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:11:10,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:11:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:10,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 13:11:10,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:11:11,159 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 13:11:11,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:11:11,300 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 13:11:11,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343362617] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:11:11,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:11:11,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-12-13 13:11:11,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216087293] [2022-12-13 13:11:11,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:11:11,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 13:11:11,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:11,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 13:11:11,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:11:11,303 INFO L87 Difference]: Start difference. First operand 3381 states and 4262 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 13:11:12,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:12,849 INFO L93 Difference]: Finished difference Result 7822 states and 9748 transitions. [2022-12-13 13:11:12,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 13:11:12,850 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 13:11:12,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:12,866 INFO L225 Difference]: With dead ends: 7822 [2022-12-13 13:11:12,866 INFO L226 Difference]: Without dead ends: 7819 [2022-12-13 13:11:12,868 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 13:11:12,868 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1632 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1697 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 1809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:12,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1697 Valid, 1484 Invalid, 1809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 13:11:12,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7819 states. [2022-12-13 13:11:13,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7819 to 5171. [2022-12-13 13:11:13,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 4054 states have (on average 1.27084361124815) internal successors, (5152), 4117 states have internal predecessors, (5152), 548 states have call successors, (548), 451 states have call predecessors, (548), 567 states have return successors, (800), 609 states have call predecessors, (800), 547 states have call successors, (800) [2022-12-13 13:11:13,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 6500 transitions. [2022-12-13 13:11:13,184 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 6500 transitions. Word has length 74 [2022-12-13 13:11:13,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:13,184 INFO L495 AbstractCegarLoop]: Abstraction has 5171 states and 6500 transitions. [2022-12-13 13:11:13,184 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 13:11:13,184 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 6500 transitions. [2022-12-13 13:11:13,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 13:11:13,186 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:13,186 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 13:11:13,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:11:13,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 13:11:13,387 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:13,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:13,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1151605564, now seen corresponding path program 2 times [2022-12-13 13:11:13,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:13,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53956602] [2022-12-13 13:11:13,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:13,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:13,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:13,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:11:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:13,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 13:11:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:13,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:11:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:13,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 13:11:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:13,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 13:11:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:13,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 13:11:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:13,541 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 13:11:13,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:13,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53956602] [2022-12-13 13:11:13,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53956602] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:13,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:13,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:11:13,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427987078] [2022-12-13 13:11:13,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:13,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:11:13,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:13,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:11:13,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:11:13,543 INFO L87 Difference]: Start difference. First operand 5171 states and 6500 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 13:11:14,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:14,177 INFO L93 Difference]: Finished difference Result 7853 states and 9873 transitions. [2022-12-13 13:11:14,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:11:14,177 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 13:11:14,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:14,187 INFO L225 Difference]: With dead ends: 7853 [2022-12-13 13:11:14,187 INFO L226 Difference]: Without dead ends: 3778 [2022-12-13 13:11:14,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:11:14,196 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 935 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:14,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 782 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 13:11:14,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2022-12-13 13:11:14,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 3543. [2022-12-13 13:11:14,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3543 states, 2782 states have (on average 1.2552120776419842) internal successors, (3492), 2823 states have internal predecessors, (3492), 380 states have call successors, (380), 307 states have call predecessors, (380), 379 states have return successors, (526), 419 states have call predecessors, (526), 379 states have call successors, (526) [2022-12-13 13:11:14,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 4398 transitions. [2022-12-13 13:11:14,520 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 4398 transitions. Word has length 77 [2022-12-13 13:11:14,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:14,521 INFO L495 AbstractCegarLoop]: Abstraction has 3543 states and 4398 transitions. [2022-12-13 13:11:14,521 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 13:11:14,521 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 4398 transitions. [2022-12-13 13:11:14,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-13 13:11:14,523 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:14,523 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 13:11:14,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 13:11:14,523 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:14,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:14,523 INFO L85 PathProgramCache]: Analyzing trace with hash -948888726, now seen corresponding path program 1 times [2022-12-13 13:11:14,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:14,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961200440] [2022-12-13 13:11:14,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:14,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:14,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:14,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:11:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:14,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 13:11:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:14,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:11:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:14,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 13:11:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:14,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 13:11:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:14,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 13:11:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:14,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 13:11:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:14,601 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 13:11:14,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:14,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961200440] [2022-12-13 13:11:14,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961200440] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:14,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:14,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 13:11:14,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033301666] [2022-12-13 13:11:14,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:14,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 13:11:14,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:14,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 13:11:14,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:11:14,603 INFO L87 Difference]: Start difference. First operand 3543 states and 4398 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 13:11:15,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:15,604 INFO L93 Difference]: Finished difference Result 10399 states and 12779 transitions. [2022-12-13 13:11:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 13:11:15,605 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 13:11:15,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:15,617 INFO L225 Difference]: With dead ends: 10399 [2022-12-13 13:11:15,617 INFO L226 Difference]: Without dead ends: 5778 [2022-12-13 13:11:15,623 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 13:11:15,623 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 786 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:15,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 1375 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 13:11:15,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5778 states. [2022-12-13 13:11:15,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5778 to 5458. [2022-12-13 13:11:15,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5458 states, 4240 states have (on average 1.2308962264150944) internal successors, (5219), 4324 states have internal predecessors, (5219), 584 states have call successors, (584), 481 states have call predecessors, (584), 632 states have return successors, (908), 659 states have call predecessors, (908), 583 states have call successors, (908) [2022-12-13 13:11:15,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5458 states to 5458 states and 6711 transitions. [2022-12-13 13:11:15,969 INFO L78 Accepts]: Start accepts. Automaton has 5458 states and 6711 transitions. Word has length 84 [2022-12-13 13:11:15,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:15,969 INFO L495 AbstractCegarLoop]: Abstraction has 5458 states and 6711 transitions. [2022-12-13 13:11:15,970 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 13:11:15,970 INFO L276 IsEmpty]: Start isEmpty. Operand 5458 states and 6711 transitions. [2022-12-13 13:11:15,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 13:11:15,972 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:15,972 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 13:11:15,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 13:11:15,972 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:15,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:15,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1201115614, now seen corresponding path program 1 times [2022-12-13 13:11:15,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:15,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868049781] [2022-12-13 13:11:15,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:15,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:16,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:16,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:11:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:16,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 13:11:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:16,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:11:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:16,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 13:11:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:16,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 13:11:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:16,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 13:11:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:16,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 13:11:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:16,063 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 13:11:16,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:16,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868049781] [2022-12-13 13:11:16,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868049781] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:16,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:16,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 13:11:16,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340782698] [2022-12-13 13:11:16,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:16,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:11:16,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:16,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:11:16,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:11:16,065 INFO L87 Difference]: Start difference. First operand 5458 states and 6711 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 13:11:17,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:17,309 INFO L93 Difference]: Finished difference Result 9461 states and 11551 transitions. [2022-12-13 13:11:17,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 13:11:17,310 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 13:11:17,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:17,323 INFO L225 Difference]: With dead ends: 9461 [2022-12-13 13:11:17,324 INFO L226 Difference]: Without dead ends: 4868 [2022-12-13 13:11:17,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-12-13 13:11:17,329 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 1727 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:17,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1766 Valid, 1188 Invalid, 1634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 13:11:17,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4868 states. [2022-12-13 13:11:17,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4868 to 4534. [2022-12-13 13:11:17,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4534 states, 3529 states have (on average 1.2235760838764522) internal successors, (4318), 3595 states have internal predecessors, (4318), 485 states have call successors, (485), 396 states have call predecessors, (485), 518 states have return successors, (686), 549 states have call predecessors, (686), 484 states have call successors, (686) [2022-12-13 13:11:17,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4534 states to 4534 states and 5489 transitions. [2022-12-13 13:11:17,702 INFO L78 Accepts]: Start accepts. Automaton has 4534 states and 5489 transitions. Word has length 93 [2022-12-13 13:11:17,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:17,702 INFO L495 AbstractCegarLoop]: Abstraction has 4534 states and 5489 transitions. [2022-12-13 13:11:17,703 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 13:11:17,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4534 states and 5489 transitions. [2022-12-13 13:11:17,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 13:11:17,705 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:17,705 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:17,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 13:11:17,705 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:17,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:17,705 INFO L85 PathProgramCache]: Analyzing trace with hash 198003052, now seen corresponding path program 1 times [2022-12-13 13:11:17,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:17,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826538216] [2022-12-13 13:11:17,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:17,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:17,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:17,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 13:11:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:17,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 13:11:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:17,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:11:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:17,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:11:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:17,765 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 13:11:17,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:17,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826538216] [2022-12-13 13:11:17,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826538216] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:17,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:17,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:11:17,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224515927] [2022-12-13 13:11:17,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:17,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:11:17,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:17,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:11:17,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:11:17,766 INFO L87 Difference]: Start difference. First operand 4534 states and 5489 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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 13:11:18,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:18,695 INFO L93 Difference]: Finished difference Result 4791 states and 5893 transitions. [2022-12-13 13:11:18,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:11:18,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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 101 [2022-12-13 13:11:18,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:18,703 INFO L225 Difference]: With dead ends: 4791 [2022-12-13 13:11:18,703 INFO L226 Difference]: Without dead ends: 4599 [2022-12-13 13:11:18,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:11:18,705 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 611 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:18,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 640 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 13:11:18,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4599 states. [2022-12-13 13:11:19,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4599 to 4534. [2022-12-13 13:11:19,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4534 states, 3529 states have (on average 1.2232927174837065) internal successors, (4317), 3595 states have internal predecessors, (4317), 485 states have call successors, (485), 396 states have call predecessors, (485), 518 states have return successors, (686), 549 states have call predecessors, (686), 484 states have call successors, (686) [2022-12-13 13:11:19,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4534 states to 4534 states and 5488 transitions. [2022-12-13 13:11:19,109 INFO L78 Accepts]: Start accepts. Automaton has 4534 states and 5488 transitions. Word has length 101 [2022-12-13 13:11:19,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:19,109 INFO L495 AbstractCegarLoop]: Abstraction has 4534 states and 5488 transitions. [2022-12-13 13:11:19,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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 13:11:19,109 INFO L276 IsEmpty]: Start isEmpty. Operand 4534 states and 5488 transitions. [2022-12-13 13:11:19,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 13:11:19,112 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:19,113 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] [2022-12-13 13:11:19,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 13:11:19,113 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:19,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:19,113 INFO L85 PathProgramCache]: Analyzing trace with hash 968736618, now seen corresponding path program 1 times [2022-12-13 13:11:19,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:19,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437535863] [2022-12-13 13:11:19,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:19,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:19,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:19,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 13:11:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:19,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 13:11:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:19,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:11:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:19,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:11:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:19,221 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 13:11:19,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:19,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437535863] [2022-12-13 13:11:19,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437535863] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:19,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:19,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:11:19,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768605932] [2022-12-13 13:11:19,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:19,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:11:19,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:19,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:11:19,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:11:19,224 INFO L87 Difference]: Start difference. First operand 4534 states and 5488 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 13:11:20,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:20,817 INFO L93 Difference]: Finished difference Result 5046 states and 6295 transitions. [2022-12-13 13:11:20,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 13:11:20,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2022-12-13 13:11:20,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:20,826 INFO L225 Difference]: With dead ends: 5046 [2022-12-13 13:11:20,826 INFO L226 Difference]: Without dead ends: 4857 [2022-12-13 13:11:20,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-13 13:11:20,828 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 978 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:20,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 920 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 13:11:20,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4857 states. [2022-12-13 13:11:21,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4857 to 4728. [2022-12-13 13:11:21,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4728 states, 3702 states have (on average 1.2387898433279307) internal successors, (4586), 3769 states have internal predecessors, (4586), 499 states have call successors, (499), 402 states have call predecessors, (499), 525 states have return successors, (703), 563 states have call predecessors, (703), 498 states have call successors, (703) [2022-12-13 13:11:21,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4728 states to 4728 states and 5788 transitions. [2022-12-13 13:11:21,253 INFO L78 Accepts]: Start accepts. Automaton has 4728 states and 5788 transitions. Word has length 101 [2022-12-13 13:11:21,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:21,253 INFO L495 AbstractCegarLoop]: Abstraction has 4728 states and 5788 transitions. [2022-12-13 13:11:21,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 13:11:21,254 INFO L276 IsEmpty]: Start isEmpty. Operand 4728 states and 5788 transitions. [2022-12-13 13:11:21,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 13:11:21,256 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:21,256 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] [2022-12-13 13:11:21,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 13:11:21,256 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:21,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:21,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1449747860, now seen corresponding path program 1 times [2022-12-13 13:11:21,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:21,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274304062] [2022-12-13 13:11:21,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:21,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:21,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:21,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 13:11:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:21,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 13:11:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:21,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:11:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:21,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:11:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:21,353 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 13:11:21,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:21,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274304062] [2022-12-13 13:11:21,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274304062] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:21,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:21,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:11:21,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253348745] [2022-12-13 13:11:21,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:21,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:11:21,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:21,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:11:21,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:11:21,355 INFO L87 Difference]: Start difference. First operand 4728 states and 5788 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 13:11:23,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:23,142 INFO L93 Difference]: Finished difference Result 5506 states and 7012 transitions. [2022-12-13 13:11:23,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 13:11:23,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-12-13 13:11:23,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:23,154 INFO L225 Difference]: With dead ends: 5506 [2022-12-13 13:11:23,154 INFO L226 Difference]: Without dead ends: 5123 [2022-12-13 13:11:23,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:11:23,157 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 991 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 1978 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:23,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 1551 Invalid, 2062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1978 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 13:11:23,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5123 states. [2022-12-13 13:11:23,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5123 to 4910. [2022-12-13 13:11:23,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4910 states, 3863 states have (on average 1.250582448873932) internal successors, (4831), 3931 states have internal predecessors, (4831), 513 states have call successors, (513), 408 states have call predecessors, (513), 532 states have return successors, (719), 578 states have call predecessors, (719), 512 states have call successors, (719) [2022-12-13 13:11:23,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4910 states to 4910 states and 6063 transitions. [2022-12-13 13:11:23,607 INFO L78 Accepts]: Start accepts. Automaton has 4910 states and 6063 transitions. Word has length 101 [2022-12-13 13:11:23,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:23,607 INFO L495 AbstractCegarLoop]: Abstraction has 4910 states and 6063 transitions. [2022-12-13 13:11:23,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 13:11:23,607 INFO L276 IsEmpty]: Start isEmpty. Operand 4910 states and 6063 transitions. [2022-12-13 13:11:23,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 13:11:23,610 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:23,610 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] [2022-12-13 13:11:23,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 13:11:23,611 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:23,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:23,611 INFO L85 PathProgramCache]: Analyzing trace with hash -124891666, now seen corresponding path program 1 times [2022-12-13 13:11:23,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:23,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538105145] [2022-12-13 13:11:23,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:23,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:23,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:23,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 13:11:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:23,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 13:11:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:23,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:11:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:23,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:11:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:23,700 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 13:11:23,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:23,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538105145] [2022-12-13 13:11:23,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538105145] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:23,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:23,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:11:23,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230862084] [2022-12-13 13:11:23,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:23,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:11:23,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:23,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:11:23,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:11:23,702 INFO L87 Difference]: Start difference. First operand 4910 states and 6063 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 13:11:25,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:25,594 INFO L93 Difference]: Finished difference Result 6181 states and 8055 transitions. [2022-12-13 13:11:25,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 13:11:25,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-12-13 13:11:25,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:25,602 INFO L225 Difference]: With dead ends: 6181 [2022-12-13 13:11:25,602 INFO L226 Difference]: Without dead ends: 5616 [2022-12-13 13:11:25,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:11:25,605 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 986 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 1953 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 2039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:25,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 1549 Invalid, 2039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1953 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 13:11:25,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5616 states. [2022-12-13 13:11:26,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5616 to 5277. [2022-12-13 13:11:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5277 states, 4188 states have (on average 1.2717287488061126) internal successors, (5326), 4258 states have internal predecessors, (5326), 541 states have call successors, (541), 420 states have call predecessors, (541), 546 states have return successors, (755), 608 states have call predecessors, (755), 540 states have call successors, (755) [2022-12-13 13:11:26,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5277 states to 5277 states and 6622 transitions. [2022-12-13 13:11:26,130 INFO L78 Accepts]: Start accepts. Automaton has 5277 states and 6622 transitions. Word has length 101 [2022-12-13 13:11:26,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:26,130 INFO L495 AbstractCegarLoop]: Abstraction has 5277 states and 6622 transitions. [2022-12-13 13:11:26,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 13:11:26,130 INFO L276 IsEmpty]: Start isEmpty. Operand 5277 states and 6622 transitions. [2022-12-13 13:11:26,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 13:11:26,132 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:26,132 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] [2022-12-13 13:11:26,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 13:11:26,132 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:26,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:26,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1441866284, now seen corresponding path program 1 times [2022-12-13 13:11:26,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:26,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890040317] [2022-12-13 13:11:26,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:26,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:26,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:26,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 13:11:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:26,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 13:11:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:26,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:11:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:26,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:11:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:26,220 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 13:11:26,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:26,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890040317] [2022-12-13 13:11:26,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890040317] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:26,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:26,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:11:26,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557208426] [2022-12-13 13:11:26,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:26,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:11:26,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:26,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:11:26,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:11:26,222 INFO L87 Difference]: Start difference. First operand 5277 states and 6622 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 13:11:28,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:28,480 INFO L93 Difference]: Finished difference Result 7490 states and 10074 transitions. [2022-12-13 13:11:28,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 13:11:28,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-12-13 13:11:28,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:28,491 INFO L225 Difference]: With dead ends: 7490 [2022-12-13 13:11:28,491 INFO L226 Difference]: Without dead ends: 6558 [2022-12-13 13:11:28,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:11:28,495 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 985 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 2026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:28,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 1549 Invalid, 2026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 13:11:28,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6558 states. [2022-12-13 13:11:29,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6558 to 6014. [2022-12-13 13:11:29,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6014 states, 4841 states have (on average 1.305515389382359) internal successors, (6320), 4915 states have internal predecessors, (6320), 597 states have call successors, (597), 444 states have call predecessors, (597), 574 states have return successors, (833), 668 states have call predecessors, (833), 596 states have call successors, (833) [2022-12-13 13:11:29,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6014 states to 6014 states and 7750 transitions. [2022-12-13 13:11:29,113 INFO L78 Accepts]: Start accepts. Automaton has 6014 states and 7750 transitions. Word has length 101 [2022-12-13 13:11:29,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:29,114 INFO L495 AbstractCegarLoop]: Abstraction has 6014 states and 7750 transitions. [2022-12-13 13:11:29,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 13:11:29,114 INFO L276 IsEmpty]: Start isEmpty. Operand 6014 states and 7750 transitions. [2022-12-13 13:11:29,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 13:11:29,116 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:29,116 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] [2022-12-13 13:11:29,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 13:11:29,116 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:29,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:29,117 INFO L85 PathProgramCache]: Analyzing trace with hash 384028206, now seen corresponding path program 1 times [2022-12-13 13:11:29,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:29,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379132643] [2022-12-13 13:11:29,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:29,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:29,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:29,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 13:11:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:29,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 13:11:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:29,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:11:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:29,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:11:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:29,239 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 13:11:29,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:29,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379132643] [2022-12-13 13:11:29,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379132643] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:29,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:29,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:11:29,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309691223] [2022-12-13 13:11:29,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:29,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:11:29,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:29,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:11:29,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:11:29,241 INFO L87 Difference]: Start difference. First operand 6014 states and 7750 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 13:11:31,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:31,353 INFO L93 Difference]: Finished difference Result 10109 states and 14132 transitions. [2022-12-13 13:11:31,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 13:11:31,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-12-13 13:11:31,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:31,367 INFO L225 Difference]: With dead ends: 10109 [2022-12-13 13:11:31,367 INFO L226 Difference]: Without dead ends: 8440 [2022-12-13 13:11:31,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:11:31,371 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 984 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:31,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1006 Valid, 1549 Invalid, 2013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 13:11:31,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8440 states. [2022-12-13 13:11:32,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8440 to 7495. [2022-12-13 13:11:32,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7495 states, 6154 states have (on average 1.3516412089697758) internal successors, (8318), 6236 states have internal predecessors, (8318), 709 states have call successors, (709), 492 states have call predecessors, (709), 630 states have return successors, (1007), 788 states have call predecessors, (1007), 708 states have call successors, (1007) [2022-12-13 13:11:32,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7495 states to 7495 states and 10034 transitions. [2022-12-13 13:11:32,055 INFO L78 Accepts]: Start accepts. Automaton has 7495 states and 10034 transitions. Word has length 101 [2022-12-13 13:11:32,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:32,055 INFO L495 AbstractCegarLoop]: Abstraction has 7495 states and 10034 transitions. [2022-12-13 13:11:32,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 13:11:32,055 INFO L276 IsEmpty]: Start isEmpty. Operand 7495 states and 10034 transitions. [2022-12-13 13:11:32,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 13:11:32,058 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:32,058 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] [2022-12-13 13:11:32,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 13:11:32,058 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:32,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:32,059 INFO L85 PathProgramCache]: Analyzing trace with hash -758474260, now seen corresponding path program 1 times [2022-12-13 13:11:32,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:32,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209063424] [2022-12-13 13:11:32,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:32,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:32,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:32,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 13:11:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:32,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 13:11:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:32,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:11:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:32,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:11:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:32,156 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 13:11:32,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:32,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209063424] [2022-12-13 13:11:32,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209063424] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:32,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:32,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:11:32,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715583382] [2022-12-13 13:11:32,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:32,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:11:32,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:32,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:11:32,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:11:32,158 INFO L87 Difference]: Start difference. First operand 7495 states and 10034 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 13:11:35,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:35,166 INFO L93 Difference]: Finished difference Result 16612 states and 24200 transitions. [2022-12-13 13:11:35,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 13:11:35,167 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-12-13 13:11:35,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:35,197 INFO L225 Difference]: With dead ends: 16612 [2022-12-13 13:11:35,197 INFO L226 Difference]: Without dead ends: 13462 [2022-12-13 13:11:35,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 13:11:35,206 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 1036 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 2256 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 2344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:35,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 1539 Invalid, 2344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2256 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 13:11:35,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13462 states. [2022-12-13 13:11:36,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13462 to 10424. [2022-12-13 13:11:36,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10424 states, 8763 states have (on average 1.4040853588953555) internal successors, (12304), 8861 states have internal predecessors, (12304), 917 states have call successors, (917), 588 states have call predecessors, (917), 742 states have return successors, (1393), 1012 states have call predecessors, (1393), 916 states have call successors, (1393) [2022-12-13 13:11:36,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10424 states to 10424 states and 14614 transitions. [2022-12-13 13:11:36,545 INFO L78 Accepts]: Start accepts. Automaton has 10424 states and 14614 transitions. Word has length 101 [2022-12-13 13:11:36,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:36,545 INFO L495 AbstractCegarLoop]: Abstraction has 10424 states and 14614 transitions. [2022-12-13 13:11:36,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 13:11:36,545 INFO L276 IsEmpty]: Start isEmpty. Operand 10424 states and 14614 transitions. [2022-12-13 13:11:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 13:11:36,553 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:36,554 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] [2022-12-13 13:11:36,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 13:11:36,554 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:36,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:36,554 INFO L85 PathProgramCache]: Analyzing trace with hash -518234514, now seen corresponding path program 1 times [2022-12-13 13:11:36,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:36,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483480967] [2022-12-13 13:11:36,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:36,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:36,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:36,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 13:11:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:36,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 13:11:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:36,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:11:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:36,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:11:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:36,665 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 13:11:36,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:36,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483480967] [2022-12-13 13:11:36,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483480967] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:36,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:36,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:11:36,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870386459] [2022-12-13 13:11:36,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:36,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:11:36,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:36,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:11:36,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:11:36,667 INFO L87 Difference]: Start difference. First operand 10424 states and 14614 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 13:11:40,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:40,824 INFO L93 Difference]: Finished difference Result 27827 states and 41838 transitions. [2022-12-13 13:11:40,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 13:11:40,825 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-12-13 13:11:40,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:40,867 INFO L225 Difference]: With dead ends: 27827 [2022-12-13 13:11:40,867 INFO L226 Difference]: Without dead ends: 21748 [2022-12-13 13:11:40,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 13:11:40,883 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1155 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 1893 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 1984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:40,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1183 Valid, 1535 Invalid, 1984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1893 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 13:11:40,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21748 states. [2022-12-13 13:11:42,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21748 to 16105. [2022-12-13 13:11:42,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16105 states, 13820 states have (on average 1.4496382054992765) internal successors, (20034), 13950 states have internal predecessors, (20034), 1317 states have call successors, (1317), 780 states have call predecessors, (1317), 966 states have return successors, (2311), 1444 states have call predecessors, (2311), 1316 states have call successors, (2311) [2022-12-13 13:11:42,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16105 states to 16105 states and 23662 transitions. [2022-12-13 13:11:42,626 INFO L78 Accepts]: Start accepts. Automaton has 16105 states and 23662 transitions. Word has length 101 [2022-12-13 13:11:42,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:42,626 INFO L495 AbstractCegarLoop]: Abstraction has 16105 states and 23662 transitions. [2022-12-13 13:11:42,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 13:11:42,626 INFO L276 IsEmpty]: Start isEmpty. Operand 16105 states and 23662 transitions. [2022-12-13 13:11:42,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 13:11:42,632 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:42,632 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] [2022-12-13 13:11:42,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 13:11:42,632 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:42,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:42,632 INFO L85 PathProgramCache]: Analyzing trace with hash 320799148, now seen corresponding path program 1 times [2022-12-13 13:11:42,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:42,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505998321] [2022-12-13 13:11:42,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:42,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:42,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:42,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 13:11:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:42,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 13:11:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:42,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:11:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:42,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:11:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:42,718 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 13:11:42,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:42,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505998321] [2022-12-13 13:11:42,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505998321] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:42,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:42,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:11:42,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270757867] [2022-12-13 13:11:42,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:42,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:11:42,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:42,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:11:42,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:11:42,719 INFO L87 Difference]: Start difference. First operand 16105 states and 23662 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 13:11:48,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:48,505 INFO L93 Difference]: Finished difference Result 49186 states and 76020 transitions. [2022-12-13 13:11:48,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 13:11:48,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-12-13 13:11:48,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:48,590 INFO L225 Difference]: With dead ends: 49186 [2022-12-13 13:11:48,590 INFO L226 Difference]: Without dead ends: 37426 [2022-12-13 13:11:48,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 13:11:48,619 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 1059 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 1967 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 2081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:48,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1108 Invalid, 2081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1967 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 13:11:48,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37426 states. [2022-12-13 13:11:51,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37426 to 27594. [2022-12-13 13:11:51,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27594 states, 24093 states have (on average 1.4850786535508238) internal successors, (35780), 24287 states have internal predecessors, (35780), 2085 states have call successors, (2085), 1164 states have call predecessors, (2085), 1414 states have return successors, (4601), 2276 states have call predecessors, (4601), 2084 states have call successors, (4601) [2022-12-13 13:11:51,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27594 states to 27594 states and 42466 transitions. [2022-12-13 13:11:51,441 INFO L78 Accepts]: Start accepts. Automaton has 27594 states and 42466 transitions. Word has length 101 [2022-12-13 13:11:51,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:11:51,442 INFO L495 AbstractCegarLoop]: Abstraction has 27594 states and 42466 transitions. [2022-12-13 13:11:51,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 13:11:51,442 INFO L276 IsEmpty]: Start isEmpty. Operand 27594 states and 42466 transitions. [2022-12-13 13:11:51,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 13:11:51,451 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:11:51,452 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] [2022-12-13 13:11:51,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 13:11:51,452 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:11:51,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:11:51,452 INFO L85 PathProgramCache]: Analyzing trace with hash 347864750, now seen corresponding path program 1 times [2022-12-13 13:11:51,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:11:51,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199536329] [2022-12-13 13:11:51,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:11:51,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:11:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:51,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:11:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:51,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 13:11:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:51,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 13:11:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:51,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:11:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:51,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:11:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:11:51,595 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 13:11:51,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:11:51,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199536329] [2022-12-13 13:11:51,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199536329] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:11:51,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:11:51,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:11:51,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812562997] [2022-12-13 13:11:51,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:11:51,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:11:51,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:11:51,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:11:51,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:11:51,597 INFO L87 Difference]: Start difference. First operand 27594 states and 42466 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 13:12:00,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:12:00,850 INFO L93 Difference]: Finished difference Result 89215 states and 142326 transitions. [2022-12-13 13:12:00,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 13:12:00,851 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-12-13 13:12:00,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:12:01,035 INFO L225 Difference]: With dead ends: 89215 [2022-12-13 13:12:01,035 INFO L226 Difference]: Without dead ends: 65966 [2022-12-13 13:12:01,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 13:12:01,096 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 1039 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 1849 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1067 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:12:01,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1067 Valid, 1539 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1849 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 13:12:01,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65966 states. [2022-12-13 13:12:06,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65966 to 50636. [2022-12-13 13:12:06,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50636 states, 44767 states have (on average 1.5098621752630286) internal successors, (67592), 45089 states have internal predecessors, (67592), 3557 states have call successors, (3557), 1932 states have call predecessors, (3557), 2310 states have return successors, (10575), 3876 states have call predecessors, (10575), 3556 states have call successors, (10575) [2022-12-13 13:12:06,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50636 states to 50636 states and 81724 transitions. [2022-12-13 13:12:06,439 INFO L78 Accepts]: Start accepts. Automaton has 50636 states and 81724 transitions. Word has length 101 [2022-12-13 13:12:06,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:12:06,439 INFO L495 AbstractCegarLoop]: Abstraction has 50636 states and 81724 transitions. [2022-12-13 13:12:06,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 13:12:06,440 INFO L276 IsEmpty]: Start isEmpty. Operand 50636 states and 81724 transitions. [2022-12-13 13:12:06,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 13:12:06,459 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:12:06,459 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] [2022-12-13 13:12:06,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 13:12:06,459 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:12:06,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:12:06,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2081969200, now seen corresponding path program 1 times [2022-12-13 13:12:06,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:12:06,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309994424] [2022-12-13 13:12:06,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:12:06,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:12:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:12:06,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:12:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:12:06,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 13:12:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:12:06,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 13:12:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:12:06,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:12:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:12:06,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:12:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:12:06,534 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 13:12:06,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:12:06,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309994424] [2022-12-13 13:12:06,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309994424] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:12:06,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:12:06,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:12:06,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476282687] [2022-12-13 13:12:06,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:12:06,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:12:06,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:12:06,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:12:06,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:12:06,535 INFO L87 Difference]: Start difference. First operand 50636 states and 81724 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 13:12:23,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:12:23,082 INFO L93 Difference]: Finished difference Result 168959 states and 280078 transitions. [2022-12-13 13:12:23,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 13:12:23,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-12-13 13:12:23,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:12:23,456 INFO L225 Difference]: With dead ends: 168959 [2022-12-13 13:12:23,456 INFO L226 Difference]: Without dead ends: 122668 [2022-12-13 13:12:23,563 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 13:12:23,564 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 981 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:12:23,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 1539 Invalid, 2029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 13:12:23,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122668 states. [2022-12-13 13:12:33,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122668 to 96589. [2022-12-13 13:12:34,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96589 states, 86112 states have (on average 1.525199739873653) internal successors, (131338), 86690 states have internal predecessors, (131338), 6373 states have call successors, (6373), 3468 states have call predecessors, (6373), 4102 states have return successors, (26769), 6948 states have call predecessors, (26769), 6372 states have call successors, (26769) [2022-12-13 13:12:34,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96589 states to 96589 states and 164480 transitions. [2022-12-13 13:12:34,352 INFO L78 Accepts]: Start accepts. Automaton has 96589 states and 164480 transitions. Word has length 101 [2022-12-13 13:12:34,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:12:34,352 INFO L495 AbstractCegarLoop]: Abstraction has 96589 states and 164480 transitions. [2022-12-13 13:12:34,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 13:12:34,352 INFO L276 IsEmpty]: Start isEmpty. Operand 96589 states and 164480 transitions. [2022-12-13 13:12:34,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 13:12:34,394 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:12:34,394 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] [2022-12-13 13:12:34,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 13:12:34,394 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:12:34,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:12:34,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1325775250, now seen corresponding path program 1 times [2022-12-13 13:12:34,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:12:34,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365075275] [2022-12-13 13:12:34,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:12:34,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:12:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:12:34,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:12:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:12:34,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 13:12:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:12:34,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 13:12:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:12:34,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:12:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:12:34,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:12:34,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:12:34,483 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 13:12:34,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:12:34,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365075275] [2022-12-13 13:12:34,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365075275] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:12:34,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:12:34,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:12:34,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454777244] [2022-12-13 13:12:34,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:12:34,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:12:34,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:12:34,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:12:34,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:12:34,485 INFO L87 Difference]: Start difference. First operand 96589 states and 164480 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 13:13:02,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:13:02,933 INFO L93 Difference]: Finished difference Result 261839 states and 431822 transitions. [2022-12-13 13:13:02,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 13:13:02,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-12-13 13:13:02,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:13:03,425 INFO L225 Difference]: With dead ends: 261839 [2022-12-13 13:13:03,425 INFO L226 Difference]: Without dead ends: 169596 [2022-12-13 13:13:03,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-12-13 13:13:03,623 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 657 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 13:13:03,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1244 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 13:13:03,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169596 states. [2022-12-13 13:13:15,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169596 to 98128. [2022-12-13 13:13:16,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98128 states, 87651 states have (on average 1.5159781405802557) internal successors, (132877), 88229 states have internal predecessors, (132877), 6373 states have call successors, (6373), 3468 states have call predecessors, (6373), 4102 states have return successors, (26769), 6948 states have call predecessors, (26769), 6372 states have call successors, (26769) [2022-12-13 13:13:16,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98128 states to 98128 states and 166019 transitions. [2022-12-13 13:13:16,287 INFO L78 Accepts]: Start accepts. Automaton has 98128 states and 166019 transitions. Word has length 101 [2022-12-13 13:13:16,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:13:16,287 INFO L495 AbstractCegarLoop]: Abstraction has 98128 states and 166019 transitions. [2022-12-13 13:13:16,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 13:13:16,287 INFO L276 IsEmpty]: Start isEmpty. Operand 98128 states and 166019 transitions. [2022-12-13 13:13:16,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 13:13:16,327 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:13:16,327 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] [2022-12-13 13:13:16,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 13:13:16,327 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:13:16,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:13:16,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1283012208, now seen corresponding path program 1 times [2022-12-13 13:13:16,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:13:16,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877290189] [2022-12-13 13:13:16,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:13:16,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:13:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:13:16,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:13:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:13:16,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 13:13:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:13:16,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 13:13:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:13:16,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:13:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:13:16,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:13:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:13:16,438 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 13:13:16,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:13:16,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877290189] [2022-12-13 13:13:16,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877290189] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:13:16,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:13:16,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:13:16,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108385647] [2022-12-13 13:13:16,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:13:16,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:13:16,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:13:16,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:13:16,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:13:16,440 INFO L87 Difference]: Start difference. First operand 98128 states and 166019 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 13:14:02,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:14:02,093 INFO L93 Difference]: Finished difference Result 428699 states and 729406 transitions. [2022-12-13 13:14:02,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 13:14:02,093 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-12-13 13:14:02,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:14:03,275 INFO L225 Difference]: With dead ends: 428699 [2022-12-13 13:14:03,275 INFO L226 Difference]: Without dead ends: 334917 [2022-12-13 13:14:03,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-12-13 13:14:03,628 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 2136 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 2099 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2163 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 2415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 2099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 13:14:03,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2163 Valid, 1355 Invalid, 2415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 2099 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 13:14:03,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334917 states. [2022-12-13 13:14:35,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334917 to 275684. [2022-12-13 13:14:35,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275684 states, 246330 states have (on average 1.518195104128608) internal successors, (373977), 248703 states have internal predecessors, (373977), 18064 states have call successors, (18064), 9630 states have call predecessors, (18064), 11288 states have return successors, (75774), 17868 states have call predecessors, (75774), 18063 states have call successors, (75774) [2022-12-13 13:14:36,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275684 states to 275684 states and 467815 transitions. [2022-12-13 13:14:36,809 INFO L78 Accepts]: Start accepts. Automaton has 275684 states and 467815 transitions. Word has length 101 [2022-12-13 13:14:36,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:14:36,809 INFO L495 AbstractCegarLoop]: Abstraction has 275684 states and 467815 transitions. [2022-12-13 13:14:36,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 13:14:36,809 INFO L276 IsEmpty]: Start isEmpty. Operand 275684 states and 467815 transitions. [2022-12-13 13:14:37,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 13:14:37,113 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:14:37,114 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 13:14:37,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 13:14:37,114 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:14:37,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:14:37,114 INFO L85 PathProgramCache]: Analyzing trace with hash -23668552, now seen corresponding path program 1 times [2022-12-13 13:14:37,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:14:37,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506607119] [2022-12-13 13:14:37,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:14:37,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:14:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:14:37,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:14:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:14:37,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:14:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:14:37,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 13:14:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:14:37,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:14:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:14:37,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 13:14:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:14:37,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 13:14:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:14:37,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 13:14:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:14:37,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 13:14:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:14:37,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 13:14:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:14:37,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 13:14:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:14:37,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 13:14:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:14:37,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:14:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:14:37,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 13:14:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:14:37,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 13:14:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:14:37,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 13:14:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:14:37,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 13:14:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:14:37,214 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 13:14:37,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:14:37,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506607119] [2022-12-13 13:14:37,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506607119] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:14:37,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778628786] [2022-12-13 13:14:37,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:14:37,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:14:37,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:14:37,216 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:14:37,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:14:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:14:37,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 13:14:37,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:14:37,320 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 13:14:37,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:14:37,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778628786] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:14:37,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:14:37,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-12-13 13:14:37,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720288064] [2022-12-13 13:14:37,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:14:37,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:14:37,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:14:37,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:14:37,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-13 13:14:37,322 INFO L87 Difference]: Start difference. First operand 275684 states and 467815 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 13:15:06,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:15:06,059 INFO L93 Difference]: Finished difference Result 277850 states and 470438 transitions. [2022-12-13 13:15:06,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:15:06,060 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 13:15:06,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:15:07,108 INFO L225 Difference]: With dead ends: 277850 [2022-12-13 13:15:07,108 INFO L226 Difference]: Without dead ends: 273545 [2022-12-13 13:15:07,244 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 13:15:07,245 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 34 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2140 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 13:15:07,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 2140 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:15:07,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273545 states. [2022-12-13 13:15:38,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273545 to 273420. [2022-12-13 13:15:38,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273420 states, 244643 states have (on average 1.5202683093323741) internal successors, (371923), 246965 states have internal predecessors, (371923), 17788 states have call successors, (17788), 9396 states have call predecessors, (17788), 10987 states have return successors, (75381), 17570 states have call predecessors, (75381), 17787 states have call successors, (75381) [2022-12-13 13:15:39,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273420 states to 273420 states and 465092 transitions. [2022-12-13 13:15:39,707 INFO L78 Accepts]: Start accepts. Automaton has 273420 states and 465092 transitions. Word has length 145 [2022-12-13 13:15:39,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:15:39,708 INFO L495 AbstractCegarLoop]: Abstraction has 273420 states and 465092 transitions. [2022-12-13 13:15:39,708 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 13:15:39,708 INFO L276 IsEmpty]: Start isEmpty. Operand 273420 states and 465092 transitions. [2022-12-13 13:15:40,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 13:15:40,110 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:15:40,110 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 13:15:40,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 13:15:40,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 13:15:40,312 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:15:40,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:15:40,313 INFO L85 PathProgramCache]: Analyzing trace with hash 13147116, now seen corresponding path program 1 times [2022-12-13 13:15:40,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:15:40,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723398649] [2022-12-13 13:15:40,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:15:40,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:15:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:40,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:15:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:40,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:15:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:40,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 13:15:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:40,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:15:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:40,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 13:15:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:40,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 13:15:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:40,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 13:15:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:40,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 13:15:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:40,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 13:15:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:40,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 13:15:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:40,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 13:15:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:40,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:15:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:40,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 13:15:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:40,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 13:15:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:40,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 13:15:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:40,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 13:15:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:40,371 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 13:15:40,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:15:40,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723398649] [2022-12-13 13:15:40,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723398649] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:15:40,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:15:40,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:15:40,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271848011] [2022-12-13 13:15:40,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:15:40,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:15:40,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:15:40,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:15:40,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:15:40,372 INFO L87 Difference]: Start difference. First operand 273420 states and 465092 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 13:16:09,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:16:09,717 INFO L93 Difference]: Finished difference Result 273485 states and 465160 transitions. [2022-12-13 13:16:09,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:16:09,718 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 13:16:09,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:16:10,755 INFO L225 Difference]: With dead ends: 273485 [2022-12-13 13:16:10,756 INFO L226 Difference]: Without dead ends: 273042 [2022-12-13 13:16:10,892 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 13:16:10,892 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 649 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 13:16:10,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 780 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 13:16:11,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273042 states. [2022-12-13 13:16:42,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273042 to 272980. [2022-12-13 13:16:42,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272980 states, 244299 states have (on average 1.5207553039513055) internal successors, (371519), 246618 states have internal predecessors, (371519), 17742 states have call successors, (17742), 9356 states have call predecessors, (17742), 10937 states have return successors, (75317), 17517 states have call predecessors, (75317), 17741 states have call successors, (75317) [2022-12-13 13:16:43,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272980 states to 272980 states and 464578 transitions. [2022-12-13 13:16:43,400 INFO L78 Accepts]: Start accepts. Automaton has 272980 states and 464578 transitions. Word has length 147 [2022-12-13 13:16:43,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:16:43,400 INFO L495 AbstractCegarLoop]: Abstraction has 272980 states and 464578 transitions. [2022-12-13 13:16:43,400 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 13:16:43,401 INFO L276 IsEmpty]: Start isEmpty. Operand 272980 states and 464578 transitions. [2022-12-13 13:16:43,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-13 13:16:43,888 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:16:43,888 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:16:43,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 13:16:43,889 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:16:43,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:16:43,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1993774426, now seen corresponding path program 1 times [2022-12-13 13:16:43,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:16:43,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162060978] [2022-12-13 13:16:43,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:16:43,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:16:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:43,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:16:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:43,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:16:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:43,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 13:16:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:43,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:16:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:43,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 13:16:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:43,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 13:16:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:43,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 13:16:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:43,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 13:16:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:43,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 13:16:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:43,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 13:16:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:43,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 13:16:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:43,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:16:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:43,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 13:16:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:43,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 13:16:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:43,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 13:16:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:43,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 13:16:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:43,958 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-13 13:16:43,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:16:43,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162060978] [2022-12-13 13:16:43,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162060978] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:16:43,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:16:43,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:16:43,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091545007] [2022-12-13 13:16:43,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:16:43,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:16:43,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:16:43,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:16:43,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:16:43,959 INFO L87 Difference]: Start difference. First operand 272980 states and 464578 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 13:17:13,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:17:13,615 INFO L93 Difference]: Finished difference Result 274457 states and 466377 transitions. [2022-12-13 13:17:13,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:17:13,615 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2022-12-13 13:17:13,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:17:14,590 INFO L225 Difference]: With dead ends: 274457 [2022-12-13 13:17:14,591 INFO L226 Difference]: Without dead ends: 273081 [2022-12-13 13:17:14,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 13:17:14,730 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 402 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 13:17:14,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 1342 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 13:17:14,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273081 states. [2022-12-13 13:17:45,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273081 to 272889. [2022-12-13 13:17:46,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272889 states, 244230 states have (on average 1.5208369160217827) internal successors, (371434), 246550 states have internal predecessors, (371434), 17733 states have call successors, (17733), 9351 states have call predecessors, (17733), 10924 states have return successors, (75301), 17499 states have call predecessors, (75301), 17732 states have call successors, (75301) [2022-12-13 13:17:47,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272889 states to 272889 states and 464468 transitions. [2022-12-13 13:17:47,246 INFO L78 Accepts]: Start accepts. Automaton has 272889 states and 464468 transitions. Word has length 159 [2022-12-13 13:17:47,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:17:47,246 INFO L495 AbstractCegarLoop]: Abstraction has 272889 states and 464468 transitions. [2022-12-13 13:17:47,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 13:17:47,246 INFO L276 IsEmpty]: Start isEmpty. Operand 272889 states and 464468 transitions. [2022-12-13 13:17:47,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-12-13 13:17:47,723 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:17:47,724 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:17:47,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 13:17:47,724 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:17:47,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:17:47,724 INFO L85 PathProgramCache]: Analyzing trace with hash 7299041, now seen corresponding path program 1 times [2022-12-13 13:17:47,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:17:47,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978675960] [2022-12-13 13:17:47,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:17:47,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:17:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:17:47,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:17:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:17:47,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:17:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:17:47,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 13:17:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:17:47,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:17:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:17:47,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 13:17:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:17:47,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 13:17:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:17:47,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 13:17:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:17:47,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 13:17:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:17:47,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 13:17:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:17:47,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 13:17:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:17:47,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 13:17:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:17:47,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:17:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:17:47,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 13:17:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:17:47,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 13:17:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:17:47,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 13:17:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:17:47,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 13:17:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:17:47,857 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-12-13 13:17:47,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:17:47,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978675960] [2022-12-13 13:17:47,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978675960] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:17:47,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932725817] [2022-12-13 13:17:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:17:47,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:17:47,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:17:47,859 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:17:47,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 13:17:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:17:47,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 13:17:47,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:17:48,044 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 13:17:48,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:17:48,227 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-12-13 13:17:48,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932725817] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:17:48,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:17:48,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-12-13 13:17:48,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888751009] [2022-12-13 13:17:48,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:17:48,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 13:17:48,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:17:48,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 13:17:48,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-12-13 13:17:48,230 INFO L87 Difference]: Start difference. First operand 272889 states and 464468 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-12-13 13:18:17,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:18:17,863 INFO L93 Difference]: Finished difference Result 274861 states and 466921 transitions. [2022-12-13 13:18:17,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 13:18:17,863 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2022-12-13 13:18:17,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:18:18,885 INFO L225 Difference]: With dead ends: 274861 [2022-12-13 13:18:18,885 INFO L226 Difference]: Without dead ends: 273429 [2022-12-13 13:18:19,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 353 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-12-13 13:18:19,053 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 1746 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1774 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 13:18:19,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1774 Valid, 1374 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 13:18:19,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273429 states. [2022-12-13 13:18:52,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273429 to 273279. [2022-12-13 13:18:52,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273279 states, 244508 states have (on average 1.5203469825118197) internal successors, (371737), 246836 states have internal predecessors, (371737), 17787 states have call successors, (17787), 9401 states have call predecessors, (17787), 10982 states have return successors, (75415), 17553 states have call predecessors, (75415), 17786 states have call successors, (75415) [2022-12-13 13:18:53,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273279 states to 273279 states and 464939 transitions. [2022-12-13 13:18:53,945 INFO L78 Accepts]: Start accepts. Automaton has 273279 states and 464939 transitions. Word has length 162 [2022-12-13 13:18:53,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:18:53,945 INFO L495 AbstractCegarLoop]: Abstraction has 273279 states and 464939 transitions. [2022-12-13 13:18:53,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-12-13 13:18:53,945 INFO L276 IsEmpty]: Start isEmpty. Operand 273279 states and 464939 transitions. [2022-12-13 13:18:54,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-12-13 13:18:54,372 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:18:54,373 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:18:54,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 13:18:54,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-12-13 13:18:54,573 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:18:54,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:18:54,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1599857043, now seen corresponding path program 1 times [2022-12-13 13:18:54,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:18:54,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060884955] [2022-12-13 13:18:54,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:18:54,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:18:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:18:54,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:18:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:18:54,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 13:18:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:18:54,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 13:18:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:18:54,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:18:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:18:54,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:18:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:18:54,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 13:18:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:18:54,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 13:18:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:18:54,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 13:18:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:18:54,685 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 13:18:54,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:18:54,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060884955] [2022-12-13 13:18:54,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060884955] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:18:54,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116095472] [2022-12-13 13:18:54,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:18:54,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:18:54,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:18:54,686 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:18:54,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 13:18:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:18:54,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 13:18:54,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:18:54,823 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 13:18:54,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:18:54,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116095472] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:18:54,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:18:54,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-12-13 13:18:54,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737615292] [2022-12-13 13:18:54,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:18:54,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:18:54,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:18:54,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:18:54,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:18:54,825 INFO L87 Difference]: Start difference. First operand 273279 states and 464939 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 13:19:58,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:58,346 INFO L93 Difference]: Finished difference Result 810558 states and 1393257 transitions. [2022-12-13 13:19:58,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:19:58,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 164 [2022-12-13 13:19:58,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:20:00,563 INFO L225 Difference]: With dead ends: 810558 [2022-12-13 13:20:00,563 INFO L226 Difference]: Without dead ends: 539220 [2022-12-13 13:20:01,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:20:01,327 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 375 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:20:01,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 721 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:20:01,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539220 states. [2022-12-13 13:21:05,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539220 to 536138. [2022-12-13 13:21:05,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536138 states, 479769 states have (on average 1.5201586596883083) internal successors, (729325), 484404 states have internal predecessors, (729325), 34609 states have call successors, (34609), 18641 states have call predecessors, (34609), 21758 states have return successors, (148848), 33604 states have call predecessors, (148848), 34608 states have call successors, (148848) [2022-12-13 13:21:08,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536138 states to 536138 states and 912782 transitions. [2022-12-13 13:21:08,364 INFO L78 Accepts]: Start accepts. Automaton has 536138 states and 912782 transitions. Word has length 164 [2022-12-13 13:21:08,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:21:08,364 INFO L495 AbstractCegarLoop]: Abstraction has 536138 states and 912782 transitions. [2022-12-13 13:21:08,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 13:21:08,364 INFO L276 IsEmpty]: Start isEmpty. Operand 536138 states and 912782 transitions. [2022-12-13 13:21:09,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-12-13 13:21:09,385 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:21:09,385 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:21:09,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 13:21:09,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-12-13 13:21:09,586 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:21:09,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:21:09,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1749291853, now seen corresponding path program 1 times [2022-12-13 13:21:09,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:21:09,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675852731] [2022-12-13 13:21:09,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:09,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:21:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:09,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 13:21:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:09,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 13:21:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:09,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 13:21:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:09,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:21:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:09,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:21:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:09,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 13:21:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:09,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 13:21:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:09,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 13:21:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:09,691 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 13:21:09,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:21:09,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675852731] [2022-12-13 13:21:09,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675852731] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:21:09,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165231059] [2022-12-13 13:21:09,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:09,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:21:09,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:21:09,692 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:21:09,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b59a2d7-46ed-4564-9132-37fbed9c539b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 13:21:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:09,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 13:21:09,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:21:09,827 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 13:21:09,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:21:09,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165231059] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:21:09,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:21:09,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-12-13 13:21:09,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13557654] [2022-12-13 13:21:09,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:21:09,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:21:09,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:21:09,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:21:09,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:21:09,828 INFO L87 Difference]: Start difference. First operand 536138 states and 912782 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)