./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.12.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_221e7d85-4586-4bc2-9d7d-5983a9ce1116/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221e7d85-4586-4bc2-9d7d-5983a9ce1116/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221e7d85-4586-4bc2-9d7d-5983a9ce1116/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221e7d85-4586-4bc2-9d7d-5983a9ce1116/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.12.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221e7d85-4586-4bc2-9d7d-5983a9ce1116/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221e7d85-4586-4bc2-9d7d-5983a9ce1116/bin/uautomizer-ZsLfNo2U6R --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 8f86f2fbff11a0ee7c52360384354edd19538e6bc949aea04301001498242d90 --- 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-38b53e6 [2022-11-25 15:51:18,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:51:18,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:51:18,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:51:18,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:51:18,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:51:18,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:51:18,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:51:18,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:51:18,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:51:18,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:51:18,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:51:18,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:51:18,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:51:18,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:51:18,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:51:18,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:51:18,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:51:18,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:51:18,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:51:18,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:51:18,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:51:18,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:51:18,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:51:18,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:51:18,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:51:18,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:51:18,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:51:18,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:51:18,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:51:18,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:51:18,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:51:18,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:51:18,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:51:18,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:51:18,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:51:18,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:51:18,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:51:18,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:51:19,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:51:19,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:51:19,003 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221e7d85-4586-4bc2-9d7d-5983a9ce1116/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 15:51:19,040 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:51:19,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:51:19,040 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:51:19,040 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:51:19,041 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:51:19,041 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:51:19,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:51:19,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:51:19,042 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:51:19,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:51:19,043 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:51:19,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:51:19,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:51:19,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:51:19,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:51:19,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:51:19,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:51:19,044 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:51:19,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:51:19,044 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:51:19,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:51:19,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:51:19,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:51:19,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:51:19,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:51:19,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:51:19,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:51:19,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:51:19,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:51:19,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:51:19,046 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:51:19,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:51:19,046 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:51:19,047 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:51:19,047 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_221e7d85-4586-4bc2-9d7d-5983a9ce1116/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221e7d85-4586-4bc2-9d7d-5983a9ce1116/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f86f2fbff11a0ee7c52360384354edd19538e6bc949aea04301001498242d90 [2022-11-25 15:51:19,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:51:19,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:51:19,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:51:19,355 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:51:19,356 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:51:19,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221e7d85-4586-4bc2-9d7d-5983a9ce1116/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.12.cil-1.c [2022-11-25 15:51:22,369 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:51:23,144 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:51:23,145 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221e7d85-4586-4bc2-9d7d-5983a9ce1116/sv-benchmarks/c/combinations/Problem05_label46+token_ring.12.cil-1.c [2022-11-25 15:51:23,271 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221e7d85-4586-4bc2-9d7d-5983a9ce1116/bin/uautomizer-ZsLfNo2U6R/data/f92e2bae9/584c59c72412450cb38061a902909c3a/FLAG2b7aba302 [2022-11-25 15:51:23,287 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221e7d85-4586-4bc2-9d7d-5983a9ce1116/bin/uautomizer-ZsLfNo2U6R/data/f92e2bae9/584c59c72412450cb38061a902909c3a [2022-11-25 15:51:23,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:51:23,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:51:23,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:51:23,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:51:23,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:51:23,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:51:23" (1/1) ... [2022-11-25 15:51:23,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c9fa96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:23, skipping insertion in model container [2022-11-25 15:51:23,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:51:23" (1/1) ... [2022-11-25 15:51:23,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:51:23,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:51:25,696 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_221e7d85-4586-4bc2-9d7d-5983a9ce1116/sv-benchmarks/c/combinations/Problem05_label46+token_ring.12.cil-1.c[382357,382370] [2022-11-25 15:51:25,730 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_221e7d85-4586-4bc2-9d7d-5983a9ce1116/sv-benchmarks/c/combinations/Problem05_label46+token_ring.12.cil-1.c[383339,383352] [2022-11-25 15:51:26,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:51:26,039 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:51:27,242 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_221e7d85-4586-4bc2-9d7d-5983a9ce1116/sv-benchmarks/c/combinations/Problem05_label46+token_ring.12.cil-1.c[382357,382370] [2022-11-25 15:51:27,247 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_221e7d85-4586-4bc2-9d7d-5983a9ce1116/sv-benchmarks/c/combinations/Problem05_label46+token_ring.12.cil-1.c[383339,383352] [2022-11-25 15:51:27,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:51:27,426 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:51:27,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:27 WrapperNode [2022-11-25 15:51:27,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:51:27,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:51:27,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:51:27,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:51:27,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:27" (1/1) ... [2022-11-25 15:51:27,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:27" (1/1) ... [2022-11-25 15:51:28,028 INFO L138 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13204 [2022-11-25 15:51:28,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:51:28,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:51:28,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:51:28,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:51:28,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:27" (1/1) ... [2022-11-25 15:51:28,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:27" (1/1) ... [2022-11-25 15:51:28,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:27" (1/1) ... [2022-11-25 15:51:28,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:27" (1/1) ... [2022-11-25 15:51:28,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:27" (1/1) ... [2022-11-25 15:51:28,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:27" (1/1) ... [2022-11-25 15:51:28,428 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:27" (1/1) ... [2022-11-25 15:51:28,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:27" (1/1) ... [2022-11-25 15:51:28,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:51:28,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:51:28,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:51:28,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:51:28,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:27" (1/1) ... [2022-11-25 15:51:28,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:51:28,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221e7d85-4586-4bc2-9d7d-5983a9ce1116/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:51:28,623 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221e7d85-4586-4bc2-9d7d-5983a9ce1116/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:51:28,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221e7d85-4586-4bc2-9d7d-5983a9ce1116/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:51:28,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:51:28,678 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-25 15:51:28,678 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-25 15:51:28,679 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-25 15:51:28,679 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-25 15:51:28,679 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-25 15:51:28,679 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-25 15:51:28,679 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-25 15:51:28,679 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-25 15:51:28,679 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-25 15:51:28,680 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-25 15:51:28,680 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-25 15:51:28,680 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-25 15:51:28,680 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-25 15:51:28,680 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-25 15:51:28,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:51:28,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:51:28,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:51:28,859 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:51:28,861 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:51:38,454 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:51:38,484 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:51:38,484 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-25 15:51:38,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:51:38 BoogieIcfgContainer [2022-11-25 15:51:38,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:51:38,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:51:38,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:51:38,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:51:38,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:51:23" (1/3) ... [2022-11-25 15:51:38,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371c117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:51:38, skipping insertion in model container [2022-11-25 15:51:38,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:27" (2/3) ... [2022-11-25 15:51:38,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371c117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:51:38, skipping insertion in model container [2022-11-25 15:51:38,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:51:38" (3/3) ... [2022-11-25 15:51:38,497 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.12.cil-1.c [2022-11-25 15:51:38,516 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:51:38,516 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 15:51:38,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:51:38,621 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;@2f50a5e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:51:38,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 15:51:38,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 2573 states, 2535 states have (on average 1.8433925049309665) internal successors, (4673), 2540 states have internal predecessors, (4673), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-25 15:51:38,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 15:51:38,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:51:38,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:38,654 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:51:38,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:38,660 INFO L85 PathProgramCache]: Analyzing trace with hash -354915978, now seen corresponding path program 1 times [2022-11-25 15:51:38,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:38,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163566041] [2022-11-25 15:51:38,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:38,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:39,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 15:51:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:39,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 15:51:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:39,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:51:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:39,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 15:51:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:39,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 15:51:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:39,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:51:39,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:39,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163566041] [2022-11-25 15:51:39,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163566041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:39,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:39,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:51:39,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903752297] [2022-11-25 15:51:39,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:39,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:51:39,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:39,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:51:39,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:51:39,460 INFO L87 Difference]: Start difference. First operand has 2573 states, 2535 states have (on average 1.8433925049309665) internal successors, (4673), 2540 states have internal predecessors, (4673), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:51:42,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:51:42,115 INFO L93 Difference]: Finished difference Result 5281 states and 9692 transitions. [2022-11-25 15:51:42,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:51:42,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-25 15:51:42,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:51:42,141 INFO L225 Difference]: With dead ends: 5281 [2022-11-25 15:51:42,142 INFO L226 Difference]: Without dead ends: 2647 [2022-11-25 15:51:42,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:51:42,153 INFO L413 NwaCegarLoop]: 4381 mSDtfsCounter, 1052 mSDsluCounter, 12483 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 16864 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:51:42,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 16864 Invalid, 1097 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-25 15:51:42,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2022-11-25 15:51:42,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2505. [2022-11-25 15:51:42,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2469 states have (on average 1.8266504657756177) internal successors, (4510), 2472 states have internal predecessors, (4510), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-25 15:51:42,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4564 transitions. [2022-11-25 15:51:42,311 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4564 transitions. Word has length 179 [2022-11-25 15:51:42,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:51:42,312 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 4564 transitions. [2022-11-25 15:51:42,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:51:42,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4564 transitions. [2022-11-25 15:51:42,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 15:51:42,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:51:42,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:42,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:51:42,319 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:51:42,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:42,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1148182328, now seen corresponding path program 1 times [2022-11-25 15:51:42,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:42,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101578924] [2022-11-25 15:51:42,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:42,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:42,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 15:51:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:42,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 15:51:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:42,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:51:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:42,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 15:51:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:42,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 15:51:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:42,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:51:42,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:42,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101578924] [2022-11-25 15:51:42,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101578924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:42,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:42,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:51:42,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323924825] [2022-11-25 15:51:42,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:42,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:51:42,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:42,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:51:42,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:51:42,593 INFO L87 Difference]: Start difference. First operand 2505 states and 4564 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:51:45,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:51:45,150 INFO L93 Difference]: Finished difference Result 3016 states and 5390 transitions. [2022-11-25 15:51:45,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:51:45,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-25 15:51:45,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:51:45,168 INFO L225 Difference]: With dead ends: 3016 [2022-11-25 15:51:45,169 INFO L226 Difference]: Without dead ends: 2647 [2022-11-25 15:51:45,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:51:45,175 INFO L413 NwaCegarLoop]: 4311 mSDtfsCounter, 1038 mSDsluCounter, 12280 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 16591 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:51:45,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 16591 Invalid, 1096 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-25 15:51:45,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2022-11-25 15:51:45,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2505. [2022-11-25 15:51:45,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2469 states have (on average 1.8262454434993924) internal successors, (4509), 2472 states have internal predecessors, (4509), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-25 15:51:45,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4563 transitions. [2022-11-25 15:51:45,291 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4563 transitions. Word has length 179 [2022-11-25 15:51:45,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:51:45,293 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 4563 transitions. [2022-11-25 15:51:45,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:51:45,294 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4563 transitions. [2022-11-25 15:51:45,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 15:51:45,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:51:45,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:45,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:51:45,304 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:51:45,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:45,305 INFO L85 PathProgramCache]: Analyzing trace with hash 577910522, now seen corresponding path program 1 times [2022-11-25 15:51:45,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:45,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483328275] [2022-11-25 15:51:45,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:45,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:45,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 15:51:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:45,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 15:51:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:45,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:51:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:45,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 15:51:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:45,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 15:51:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:45,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:51:45,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:45,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483328275] [2022-11-25 15:51:45,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483328275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:45,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:45,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 15:51:45,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381477091] [2022-11-25 15:51:45,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:45,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:51:45,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:45,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:51:45,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:51:45,737 INFO L87 Difference]: Start difference. First operand 2505 states and 4563 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:51:50,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:51:50,488 INFO L93 Difference]: Finished difference Result 3535 states and 6234 transitions. [2022-11-25 15:51:50,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 15:51:50,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-25 15:51:50,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:51:50,505 INFO L225 Difference]: With dead ends: 3535 [2022-11-25 15:51:50,505 INFO L226 Difference]: Without dead ends: 3171 [2022-11-25 15:51:50,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:51:50,522 INFO L413 NwaCegarLoop]: 4316 mSDtfsCounter, 5533 mSDsluCounter, 12854 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5552 SdHoareTripleChecker+Valid, 17170 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-25 15:51:50,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5552 Valid, 17170 Invalid, 2495 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-25 15:51:50,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2022-11-25 15:51:50,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 2886. [2022-11-25 15:51:50,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2822 states have (on average 1.7983699503897945) internal successors, (5075), 2826 states have internal predecessors, (5075), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-11-25 15:51:50,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 5174 transitions. [2022-11-25 15:51:50,751 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 5174 transitions. Word has length 179 [2022-11-25 15:51:50,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:51:50,751 INFO L495 AbstractCegarLoop]: Abstraction has 2886 states and 5174 transitions. [2022-11-25 15:51:50,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:51:50,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 5174 transitions. [2022-11-25 15:51:50,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 15:51:50,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:51:50,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:50,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 15:51:50,756 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:51:50,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:50,757 INFO L85 PathProgramCache]: Analyzing trace with hash -807829258, now seen corresponding path program 1 times [2022-11-25 15:51:50,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:50,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127759079] [2022-11-25 15:51:50,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:50,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:50,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 15:51:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:51,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 15:51:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:51,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:51:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:51,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 15:51:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:51,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 15:51:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:51,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:51:51,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:51,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127759079] [2022-11-25 15:51:51,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127759079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:51,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:51,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:51:51,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597768794] [2022-11-25 15:51:51,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:51,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:51:51,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:51,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:51:51,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:51:51,275 INFO L87 Difference]: Start difference. First operand 2886 states and 5174 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:51:57,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:51:57,020 INFO L93 Difference]: Finished difference Result 4458 states and 7728 transitions. [2022-11-25 15:51:57,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:51:57,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-25 15:51:57,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:51:57,044 INFO L225 Difference]: With dead ends: 4458 [2022-11-25 15:51:57,045 INFO L226 Difference]: Without dead ends: 3713 [2022-11-25 15:51:57,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 15:51:57,060 INFO L413 NwaCegarLoop]: 4530 mSDtfsCounter, 5566 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3597 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5585 SdHoareTripleChecker+Valid, 22314 SdHoareTripleChecker+Invalid, 3664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:51:57,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5585 Valid, 22314 Invalid, 3664 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3597 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-25 15:51:57,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2022-11-25 15:51:57,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3240. [2022-11-25 15:51:57,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3240 states, 3148 states have (on average 1.7747776365946633) internal successors, (5587), 3153 states have internal predecessors, (5587), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2022-11-25 15:51:57,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3240 states to 3240 states and 5730 transitions. [2022-11-25 15:51:57,317 INFO L78 Accepts]: Start accepts. Automaton has 3240 states and 5730 transitions. Word has length 179 [2022-11-25 15:51:57,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:51:57,318 INFO L495 AbstractCegarLoop]: Abstraction has 3240 states and 5730 transitions. [2022-11-25 15:51:57,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:51:57,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3240 states and 5730 transitions. [2022-11-25 15:51:57,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 15:51:57,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:51:57,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:57,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 15:51:57,323 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:51:57,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:57,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1717666424, now seen corresponding path program 1 times [2022-11-25 15:51:57,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:57,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822818965] [2022-11-25 15:51:57,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:57,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:57,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 15:51:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:57,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 15:51:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:57,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:51:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:57,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 15:51:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:57,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 15:51:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:57,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:51:57,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:57,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822818965] [2022-11-25 15:51:57,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822818965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:57,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:57,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:51:57,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964645136] [2022-11-25 15:51:57,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:57,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:51:57,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:57,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:51:57,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:51:57,710 INFO L87 Difference]: Start difference. First operand 3240 states and 5730 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:52:03,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:52:03,033 INFO L93 Difference]: Finished difference Result 5819 states and 9912 transitions. [2022-11-25 15:52:03,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:52:03,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-25 15:52:03,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:52:03,055 INFO L225 Difference]: With dead ends: 5819 [2022-11-25 15:52:03,055 INFO L226 Difference]: Without dead ends: 4720 [2022-11-25 15:52:03,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 15:52:03,061 INFO L413 NwaCegarLoop]: 4321 mSDtfsCounter, 5680 mSDsluCounter, 17110 mSDsCounter, 0 mSdLazyCounter, 3185 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5699 SdHoareTripleChecker+Valid, 21431 SdHoareTripleChecker+Invalid, 3292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:52:03,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5699 Valid, 21431 Invalid, 3292 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 3185 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-25 15:52:03,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4720 states. [2022-11-25 15:52:03,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4720 to 3949. [2022-11-25 15:52:03,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3949 states, 3801 states have (on average 1.739542225730071) internal successors, (6612), 3808 states have internal predecessors, (6612), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-11-25 15:52:03,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3949 states to 3949 states and 6847 transitions. [2022-11-25 15:52:03,418 INFO L78 Accepts]: Start accepts. Automaton has 3949 states and 6847 transitions. Word has length 179 [2022-11-25 15:52:03,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:52:03,419 INFO L495 AbstractCegarLoop]: Abstraction has 3949 states and 6847 transitions. [2022-11-25 15:52:03,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:52:03,420 INFO L276 IsEmpty]: Start isEmpty. Operand 3949 states and 6847 transitions. [2022-11-25 15:52:03,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 15:52:03,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:52:03,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:03,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 15:52:03,424 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:52:03,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:03,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1106397366, now seen corresponding path program 1 times [2022-11-25 15:52:03,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:52:03,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427893826] [2022-11-25 15:52:03,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:03,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:52:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:03,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 15:52:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:03,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 15:52:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:03,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:52:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:03,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 15:52:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:03,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 15:52:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:03,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:52:03,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:52:03,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427893826] [2022-11-25 15:52:03,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427893826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:52:03,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:52:03,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:52:03,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736347789] [2022-11-25 15:52:03,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:52:03,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:52:03,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:52:03,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:52:03,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:52:03,861 INFO L87 Difference]: Start difference. First operand 3949 states and 6847 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:52:09,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:52:09,755 INFO L93 Difference]: Finished difference Result 8436 states and 14085 transitions. [2022-11-25 15:52:09,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:52:09,756 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-25 15:52:09,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:52:09,785 INFO L225 Difference]: With dead ends: 8436 [2022-11-25 15:52:09,785 INFO L226 Difference]: Without dead ends: 6628 [2022-11-25 15:52:09,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 15:52:09,793 INFO L413 NwaCegarLoop]: 4528 mSDtfsCounter, 5564 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3586 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5583 SdHoareTripleChecker+Valid, 22312 SdHoareTripleChecker+Invalid, 3655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:52:09,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5583 Valid, 22312 Invalid, 3655 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3586 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-25 15:52:09,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6628 states. [2022-11-25 15:52:10,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6628 to 5368. [2022-11-25 15:52:10,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5368 states, 5108 states have (on average 1.6957713390759592) internal successors, (8662), 5119 states have internal predecessors, (8662), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2022-11-25 15:52:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 9087 transitions. [2022-11-25 15:52:10,336 INFO L78 Accepts]: Start accepts. Automaton has 5368 states and 9087 transitions. Word has length 179 [2022-11-25 15:52:10,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:52:10,336 INFO L495 AbstractCegarLoop]: Abstraction has 5368 states and 9087 transitions. [2022-11-25 15:52:10,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:52:10,337 INFO L276 IsEmpty]: Start isEmpty. Operand 5368 states and 9087 transitions. [2022-11-25 15:52:10,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 15:52:10,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:52:10,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:10,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:52:10,342 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:52:10,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:10,345 INFO L85 PathProgramCache]: Analyzing trace with hash -298794312, now seen corresponding path program 1 times [2022-11-25 15:52:10,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:52:10,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894337893] [2022-11-25 15:52:10,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:10,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:52:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:10,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 15:52:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:10,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 15:52:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:10,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:52:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:10,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 15:52:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:10,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 15:52:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:10,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:52:10,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:52:10,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894337893] [2022-11-25 15:52:10,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894337893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:52:10,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:52:10,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:52:10,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650582770] [2022-11-25 15:52:10,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:52:10,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:52:10,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:52:10,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:52:10,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:52:10,709 INFO L87 Difference]: Start difference. First operand 5368 states and 9087 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:52:16,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:52:16,801 INFO L93 Difference]: Finished difference Result 13662 states and 22435 transitions. [2022-11-25 15:52:16,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:52:16,801 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-25 15:52:16,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:52:16,845 INFO L225 Difference]: With dead ends: 13662 [2022-11-25 15:52:16,845 INFO L226 Difference]: Without dead ends: 10435 [2022-11-25 15:52:16,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 15:52:16,856 INFO L413 NwaCegarLoop]: 4528 mSDtfsCounter, 5560 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3558 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5579 SdHoareTripleChecker+Valid, 22312 SdHoareTripleChecker+Invalid, 3627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:52:16,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5579 Valid, 22312 Invalid, 3627 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3558 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-25 15:52:16,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10435 states. [2022-11-25 15:52:17,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10435 to 8220. [2022-11-25 15:52:17,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8220 states, 7736 states have (on average 1.6527921406411583) internal successors, (12786), 7755 states have internal predecessors, (12786), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-11-25 15:52:17,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8220 states to 8220 states and 13609 transitions. [2022-11-25 15:52:17,753 INFO L78 Accepts]: Start accepts. Automaton has 8220 states and 13609 transitions. Word has length 179 [2022-11-25 15:52:17,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:52:17,753 INFO L495 AbstractCegarLoop]: Abstraction has 8220 states and 13609 transitions. [2022-11-25 15:52:17,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:52:17,754 INFO L276 IsEmpty]: Start isEmpty. Operand 8220 states and 13609 transitions. [2022-11-25 15:52:17,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 15:52:17,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:52:17,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:17,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 15:52:17,760 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:52:17,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:17,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1147786554, now seen corresponding path program 1 times [2022-11-25 15:52:17,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:52:17,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415747636] [2022-11-25 15:52:17,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:17,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:52:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:17,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 15:52:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:17,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 15:52:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:18,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:52:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:18,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 15:52:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:18,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 15:52:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:18,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:52:18,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:52:18,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415747636] [2022-11-25 15:52:18,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415747636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:52:18,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:52:18,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:52:18,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81258528] [2022-11-25 15:52:18,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:52:18,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:52:18,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:52:18,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:52:18,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:52:18,064 INFO L87 Difference]: Start difference. First operand 8220 states and 13609 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:52:24,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:52:24,939 INFO L93 Difference]: Finished difference Result 24132 states and 39227 transitions. [2022-11-25 15:52:24,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:52:24,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-25 15:52:24,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:52:25,005 INFO L225 Difference]: With dead ends: 24132 [2022-11-25 15:52:25,005 INFO L226 Difference]: Without dead ends: 18053 [2022-11-25 15:52:25,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 15:52:25,027 INFO L413 NwaCegarLoop]: 4528 mSDtfsCounter, 5559 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3545 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5578 SdHoareTripleChecker+Valid, 22312 SdHoareTripleChecker+Invalid, 3614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:52:25,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5578 Valid, 22312 Invalid, 3614 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3545 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-25 15:52:25,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18053 states. [2022-11-25 15:52:26,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18053 to 13937. [2022-11-25 15:52:26,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13937 states, 13005 states have (on average 1.6187620146097654) internal successors, (21052), 13040 states have internal predecessors, (21052), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-11-25 15:52:26,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13937 states to 13937 states and 22725 transitions. [2022-11-25 15:52:26,831 INFO L78 Accepts]: Start accepts. Automaton has 13937 states and 22725 transitions. Word has length 179 [2022-11-25 15:52:26,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:52:26,831 INFO L495 AbstractCegarLoop]: Abstraction has 13937 states and 22725 transitions. [2022-11-25 15:52:26,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:52:26,832 INFO L276 IsEmpty]: Start isEmpty. Operand 13937 states and 22725 transitions. [2022-11-25 15:52:26,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 15:52:26,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:52:26,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:26,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 15:52:26,843 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:52:26,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:26,844 INFO L85 PathProgramCache]: Analyzing trace with hash 224619128, now seen corresponding path program 1 times [2022-11-25 15:52:26,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:52:26,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366279679] [2022-11-25 15:52:26,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:26,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:52:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:27,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 15:52:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:27,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 15:52:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:27,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:52:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:27,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 15:52:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:27,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 15:52:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:27,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:52:27,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:52:27,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366279679] [2022-11-25 15:52:27,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366279679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:52:27,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:52:27,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:52:27,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687471642] [2022-11-25 15:52:27,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:52:27,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:52:27,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:52:27,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:52:27,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:52:27,221 INFO L87 Difference]: Start difference. First operand 13937 states and 22725 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:52:32,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:52:32,017 INFO L93 Difference]: Finished difference Result 30100 states and 49050 transitions. [2022-11-25 15:52:32,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:52:32,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-25 15:52:32,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:52:32,086 INFO L225 Difference]: With dead ends: 30100 [2022-11-25 15:52:32,086 INFO L226 Difference]: Without dead ends: 18304 [2022-11-25 15:52:32,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:52:32,127 INFO L413 NwaCegarLoop]: 4266 mSDtfsCounter, 5112 mSDsluCounter, 16796 mSDsCounter, 0 mSdLazyCounter, 1813 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5132 SdHoareTripleChecker+Valid, 21062 SdHoareTripleChecker+Invalid, 1882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:52:32,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5132 Valid, 21062 Invalid, 1882 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 1813 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-25 15:52:32,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18304 states. [2022-11-25 15:52:33,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18304 to 13937. [2022-11-25 15:52:33,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13937 states, 13005 states have (on average 1.6162245290272972) internal successors, (21019), 13040 states have internal predecessors, (21019), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-11-25 15:52:33,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13937 states to 13937 states and 22692 transitions. [2022-11-25 15:52:33,806 INFO L78 Accepts]: Start accepts. Automaton has 13937 states and 22692 transitions. Word has length 179 [2022-11-25 15:52:33,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:52:33,807 INFO L495 AbstractCegarLoop]: Abstraction has 13937 states and 22692 transitions. [2022-11-25 15:52:33,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:52:33,807 INFO L276 IsEmpty]: Start isEmpty. Operand 13937 states and 22692 transitions. [2022-11-25 15:52:33,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 15:52:33,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:52:33,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:33,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 15:52:33,817 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:52:33,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:33,817 INFO L85 PathProgramCache]: Analyzing trace with hash 610481530, now seen corresponding path program 1 times [2022-11-25 15:52:33,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:52:33,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446508048] [2022-11-25 15:52:33,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:33,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:52:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:33,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 15:52:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:34,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 15:52:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:34,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:52:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:34,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 15:52:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:34,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 15:52:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:34,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:52:34,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:52:34,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446508048] [2022-11-25 15:52:34,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446508048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:52:34,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:52:34,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:52:34,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977062148] [2022-11-25 15:52:34,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:52:34,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:52:34,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:52:34,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:52:34,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:52:34,249 INFO L87 Difference]: Start difference. First operand 13937 states and 22692 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:52:43,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:52:43,924 INFO L93 Difference]: Finished difference Result 45037 states and 72769 transitions. [2022-11-25 15:52:43,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:52:43,925 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-25 15:52:43,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:52:44,051 INFO L225 Difference]: With dead ends: 45037 [2022-11-25 15:52:44,051 INFO L226 Difference]: Without dead ends: 33241 [2022-11-25 15:52:44,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 15:52:44,087 INFO L413 NwaCegarLoop]: 4528 mSDtfsCounter, 5551 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3507 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5570 SdHoareTripleChecker+Valid, 22312 SdHoareTripleChecker+Invalid, 3576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:52:44,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5570 Valid, 22312 Invalid, 3576 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3507 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-25 15:52:44,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33241 states. [2022-11-25 15:52:47,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33241 to 25435. [2022-11-25 15:52:47,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25435 states, 23607 states have (on average 1.5927055534375396) internal successors, (37599), 23674 states have internal predecessors, (37599), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2022-11-25 15:52:47,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25435 states to 25435 states and 41134 transitions. [2022-11-25 15:52:47,289 INFO L78 Accepts]: Start accepts. Automaton has 25435 states and 41134 transitions. Word has length 179 [2022-11-25 15:52:47,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:52:47,289 INFO L495 AbstractCegarLoop]: Abstraction has 25435 states and 41134 transitions. [2022-11-25 15:52:47,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:52:47,290 INFO L276 IsEmpty]: Start isEmpty. Operand 25435 states and 41134 transitions. [2022-11-25 15:52:47,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 15:52:47,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:52:47,305 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:47,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 15:52:47,306 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:52:47,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:47,307 INFO L85 PathProgramCache]: Analyzing trace with hash 345834040, now seen corresponding path program 1 times [2022-11-25 15:52:47,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:52:47,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142407389] [2022-11-25 15:52:47,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:47,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:52:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:47,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 15:52:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:47,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 15:52:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:47,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:52:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:47,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 15:52:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:47,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 15:52:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:47,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:52:47,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:52:47,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142407389] [2022-11-25 15:52:47,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142407389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:52:47,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:52:47,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:52:47,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262344580] [2022-11-25 15:52:47,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:52:47,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:52:47,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:52:47,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:52:47,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:52:47,604 INFO L87 Difference]: Start difference. First operand 25435 states and 41134 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:53:02,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:53:02,872 INFO L93 Difference]: Finished difference Result 86917 states and 140729 transitions. [2022-11-25 15:53:02,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:53:02,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-25 15:53:02,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:53:03,154 INFO L225 Difference]: With dead ends: 86917 [2022-11-25 15:53:03,155 INFO L226 Difference]: Without dead ends: 63623 [2022-11-25 15:53:03,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 15:53:03,233 INFO L413 NwaCegarLoop]: 4528 mSDtfsCounter, 5550 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3494 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5569 SdHoareTripleChecker+Valid, 22312 SdHoareTripleChecker+Invalid, 3563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-25 15:53:03,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5569 Valid, 22312 Invalid, 3563 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3494 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-25 15:53:03,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63623 states. [2022-11-25 15:53:09,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63623 to 48492. [2022-11-25 15:53:09,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48492 states, 44872 states have (on average 1.5789133535389552) internal successors, (70849), 45003 states have internal predecessors, (70849), 2716 states have call successors, (2716), 775 states have call predecessors, (2716), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2022-11-25 15:53:09,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48492 states to 48492 states and 78594 transitions. [2022-11-25 15:53:09,975 INFO L78 Accepts]: Start accepts. Automaton has 48492 states and 78594 transitions. Word has length 179 [2022-11-25 15:53:09,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:53:09,975 INFO L495 AbstractCegarLoop]: Abstraction has 48492 states and 78594 transitions. [2022-11-25 15:53:09,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:53:09,976 INFO L276 IsEmpty]: Start isEmpty. Operand 48492 states and 78594 transitions. [2022-11-25 15:53:10,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 15:53:10,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:53:10,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:53:10,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 15:53:10,006 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:53:10,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:53:10,007 INFO L85 PathProgramCache]: Analyzing trace with hash -2018007622, now seen corresponding path program 1 times [2022-11-25 15:53:10,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:53:10,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039829333] [2022-11-25 15:53:10,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:53:10,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:53:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:10,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 15:53:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:10,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 15:53:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:10,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:53:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:10,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 15:53:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:10,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 15:53:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:10,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:53:10,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:53:10,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039829333] [2022-11-25 15:53:10,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039829333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:53:10,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:53:10,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:53:10,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429841223] [2022-11-25 15:53:10,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:53:10,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:53:10,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:53:10,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:53:10,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:53:10,310 INFO L87 Difference]: Start difference. First operand 48492 states and 78594 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:53:38,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:53:38,106 INFO L93 Difference]: Finished difference Result 170676 states and 278495 transitions. [2022-11-25 15:53:38,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:53:38,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-25 15:53:38,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:53:39,044 INFO L225 Difference]: With dead ends: 170676 [2022-11-25 15:53:39,044 INFO L226 Difference]: Without dead ends: 124325 [2022-11-25 15:53:39,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 15:53:39,238 INFO L413 NwaCegarLoop]: 4321 mSDtfsCounter, 5653 mSDsluCounter, 17110 mSDsCounter, 0 mSdLazyCounter, 3109 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5672 SdHoareTripleChecker+Valid, 21431 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-25 15:53:39,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5672 Valid, 21431 Invalid, 3216 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 3109 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-25 15:53:39,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124325 states.