./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e42fe4d-0696-4c24-9941-23f4a9c35df7/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e42fe4d-0696-4c24-9941-23f4a9c35df7/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e42fe4d-0696-4c24-9941-23f4a9c35df7/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e42fe4d-0696-4c24-9941-23f4a9c35df7/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.09.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e42fe4d-0696-4c24-9941-23f4a9c35df7/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e42fe4d-0696-4c24-9941-23f4a9c35df7/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 834ccc2d6e5ce947bfece9c1e11f57131346eaac8927553a9495d7568350ac6e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 19:50:48,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:50:48,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:50:48,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:50:48,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:50:48,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:50:48,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:50:48,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:50:48,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:50:48,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:50:48,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:50:48,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:50:48,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:50:48,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:50:48,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:50:48,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:50:48,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:50:48,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:50:48,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:50:48,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:50:48,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:50:48,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:50:48,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:50:48,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:50:48,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:50:48,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:50:48,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:50:48,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:50:48,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:50:48,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:50:48,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:50:48,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:50:48,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:50:48,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:50:48,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:50:48,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:50:48,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:50:48,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:50:48,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:50:48,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:50:48,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:50:48,083 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e42fe4d-0696-4c24-9941-23f4a9c35df7/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 19:50:48,099 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:50:48,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:50:48,099 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:50:48,099 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:50:48,100 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:50:48,100 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:50:48,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:50:48,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:50:48,101 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:50:48,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:50:48,101 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:50:48,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:50:48,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:50:48,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:50:48,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:50:48,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:50:48,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:50:48,102 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:50:48,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:50:48,102 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:50:48,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:50:48,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:50:48,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:50:48,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:50:48,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:50:48,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:50:48,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:50:48,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:50:48,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:50:48,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:50:48,104 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:50:48,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:50:48,105 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:50:48,105 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:50:48,105 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:50:48,105 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_3e42fe4d-0696-4c24-9941-23f4a9c35df7/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e42fe4d-0696-4c24-9941-23f4a9c35df7/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 834ccc2d6e5ce947bfece9c1e11f57131346eaac8927553a9495d7568350ac6e [2022-12-13 19:50:48,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:50:48,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:50:48,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:50:48,328 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:50:48,333 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:50:48,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e42fe4d-0696-4c24-9941-23f4a9c35df7/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/systemc/token_ring.09.cil-1.c [2022-12-13 19:50:50,917 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:50:51,105 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:50:51,106 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e42fe4d-0696-4c24-9941-23f4a9c35df7/sv-benchmarks/c/systemc/token_ring.09.cil-1.c [2022-12-13 19:50:51,114 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e42fe4d-0696-4c24-9941-23f4a9c35df7/bin/uautomizer-uyxdKDjOR8/data/8d8cbbe11/d3d4a7eda9fa442686d9bb4e8af0d869/FLAGd75f8fc49 [2022-12-13 19:50:51,501 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e42fe4d-0696-4c24-9941-23f4a9c35df7/bin/uautomizer-uyxdKDjOR8/data/8d8cbbe11/d3d4a7eda9fa442686d9bb4e8af0d869 [2022-12-13 19:50:51,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:50:51,507 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:50:51,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:50:51,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:50:51,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:50:51,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:50:51" (1/1) ... [2022-12-13 19:50:51,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dfe364a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:51, skipping insertion in model container [2022-12-13 19:50:51,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:50:51" (1/1) ... [2022-12-13 19:50:51,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:50:51,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:50:51,686 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_3e42fe4d-0696-4c24-9941-23f4a9c35df7/sv-benchmarks/c/systemc/token_ring.09.cil-1.c[671,684] [2022-12-13 19:50:51,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:50:51,797 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:50:51,808 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_3e42fe4d-0696-4c24-9941-23f4a9c35df7/sv-benchmarks/c/systemc/token_ring.09.cil-1.c[671,684] [2022-12-13 19:50:51,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:50:51,878 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:50:51,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:51 WrapperNode [2022-12-13 19:50:51,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:50:51,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:50:51,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:50:51,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:50:51,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:51" (1/1) ... [2022-12-13 19:50:51,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:51" (1/1) ... [2022-12-13 19:50:51,941 INFO L138 Inliner]: procedures = 46, calls = 58, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 679 [2022-12-13 19:50:51,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:50:51,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:50:51,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:50:51,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:50:51,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:51" (1/1) ... [2022-12-13 19:50:51,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:51" (1/1) ... [2022-12-13 19:50:51,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:51" (1/1) ... [2022-12-13 19:50:51,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:51" (1/1) ... [2022-12-13 19:50:51,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:51" (1/1) ... [2022-12-13 19:50:51,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:51" (1/1) ... [2022-12-13 19:50:51,984 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:51" (1/1) ... [2022-12-13 19:50:51,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:51" (1/1) ... [2022-12-13 19:50:51,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:50:51,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:50:51,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:50:51,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:50:51,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:51" (1/1) ... [2022-12-13 19:50:52,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:50:52,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e42fe4d-0696-4c24-9941-23f4a9c35df7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:50:52,022 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e42fe4d-0696-4c24-9941-23f4a9c35df7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:50:52,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e42fe4d-0696-4c24-9941-23f4a9c35df7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:50:52,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:50:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-12-13 19:50:52,060 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-12-13 19:50:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-12-13 19:50:52,060 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-12-13 19:50:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-13 19:50:52,060 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-13 19:50:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-12-13 19:50:52,061 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-12-13 19:50:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-12-13 19:50:52,061 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-12-13 19:50:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:50:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-12-13 19:50:52,061 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-12-13 19:50:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:50:52,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:50:52,142 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:50:52,143 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:50:52,629 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:50:52,636 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:50:52,636 INFO L300 CfgBuilder]: Removed 12 assume(true) statements. [2022-12-13 19:50:52,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:50:52 BoogieIcfgContainer [2022-12-13 19:50:52,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:50:52,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:50:52,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:50:52,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:50:52,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:50:51" (1/3) ... [2022-12-13 19:50:52,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1690e370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:50:52, skipping insertion in model container [2022-12-13 19:50:52,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:50:51" (2/3) ... [2022-12-13 19:50:52,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1690e370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:50:52, skipping insertion in model container [2022-12-13 19:50:52,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:50:52" (3/3) ... [2022-12-13 19:50:52,644 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.09.cil-1.c [2022-12-13 19:50:52,660 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:50:52,660 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 19:50:52,710 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:50:52,715 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;@572ebe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:50:52,715 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 19:50:52,720 INFO L276 IsEmpty]: Start isEmpty. Operand has 307 states, 276 states have (on average 1.6521739130434783) internal successors, (456), 278 states have internal predecessors, (456), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-12-13 19:50:52,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-13 19:50:52,732 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:50:52,732 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] [2022-12-13 19:50:52,733 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:50:52,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:52,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1628036766, now seen corresponding path program 1 times [2022-12-13 19:50:52,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:52,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645720364] [2022-12-13 19:50:52,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:52,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:53,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:50:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:53,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:50:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:53,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 19:50:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:53,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 19:50:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:53,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 19:50:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:50:53,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:50:53,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645720364] [2022-12-13 19:50:53,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645720364] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:50:53,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:50:53,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:50:53,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996878870] [2022-12-13 19:50:53,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:50:53,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:50:53,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:50:53,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:50:53,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:50:53,181 INFO L87 Difference]: Start difference. First operand has 307 states, 276 states have (on average 1.6521739130434783) internal successors, (456), 278 states have internal predecessors, (456), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:50:54,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:50:54,553 INFO L93 Difference]: Finished difference Result 710 states and 1171 transitions. [2022-12-13 19:50:54,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:50:54,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-12-13 19:50:54,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:50:54,567 INFO L225 Difference]: With dead ends: 710 [2022-12-13 19:50:54,567 INFO L226 Difference]: Without dead ends: 411 [2022-12-13 19:50:54,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:50:54,573 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 807 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:50:54,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 600 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 19:50:54,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-12-13 19:50:54,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 302. [2022-12-13 19:50:54,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 272 states have (on average 1.5625) internal successors, (425), 273 states have internal predecessors, (425), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-12-13 19:50:54,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 471 transitions. [2022-12-13 19:50:54,654 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 471 transitions. Word has length 144 [2022-12-13 19:50:54,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:50:54,654 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 471 transitions. [2022-12-13 19:50:54,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:50:54,655 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 471 transitions. [2022-12-13 19:50:54,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-13 19:50:54,658 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:50:54,658 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] [2022-12-13 19:50:54,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:50:54,659 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:50:54,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:54,659 INFO L85 PathProgramCache]: Analyzing trace with hash -2122057956, now seen corresponding path program 1 times [2022-12-13 19:50:54,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:54,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632909196] [2022-12-13 19:50:54,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:54,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:54,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:50:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:54,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:50:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:54,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 19:50:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:54,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 19:50:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:54,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 19:50:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:54,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:50:54,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:50:54,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632909196] [2022-12-13 19:50:54,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632909196] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:50:54,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:50:54,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:50:54,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669165051] [2022-12-13 19:50:54,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:50:54,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:50:54,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:50:54,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:50:54,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:50:54,911 INFO L87 Difference]: Start difference. First operand 302 states and 471 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:50:57,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:50:57,025 INFO L93 Difference]: Finished difference Result 1102 states and 1758 transitions. [2022-12-13 19:50:57,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 19:50:57,026 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-12-13 19:50:57,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:50:57,033 INFO L225 Difference]: With dead ends: 1102 [2022-12-13 19:50:57,033 INFO L226 Difference]: Without dead ends: 817 [2022-12-13 19:50:57,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:50:57,036 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 1216 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 19:50:57,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1232 Valid, 1037 Invalid, 1949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1853 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 19:50:57,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-12-13 19:50:57,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 600. [2022-12-13 19:50:57,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 545 states have (on average 1.5743119266055046) internal successors, (858), 547 states have internal predecessors, (858), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-12-13 19:50:57,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 943 transitions. [2022-12-13 19:50:57,096 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 943 transitions. Word has length 144 [2022-12-13 19:50:57,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:50:57,096 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 943 transitions. [2022-12-13 19:50:57,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:50:57,097 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 943 transitions. [2022-12-13 19:50:57,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-13 19:50:57,098 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:50:57,099 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] [2022-12-13 19:50:57,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:50:57,099 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:50:57,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:57,099 INFO L85 PathProgramCache]: Analyzing trace with hash -379054432, now seen corresponding path program 1 times [2022-12-13 19:50:57,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:57,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979650043] [2022-12-13 19:50:57,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:57,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:57,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:50:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:57,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:50:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:57,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 19:50:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:57,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 19:50:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:57,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 19:50:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:57,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:50:57,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:50:57,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979650043] [2022-12-13 19:50:57,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979650043] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:50:57,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:50:57,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:50:57,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879850257] [2022-12-13 19:50:57,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:50:57,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:50:57,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:50:57,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:50:57,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:50:57,359 INFO L87 Difference]: Start difference. First operand 600 states and 943 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:50:59,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:50:59,513 INFO L93 Difference]: Finished difference Result 1820 states and 2905 transitions. [2022-12-13 19:50:59,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:50:59,514 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-12-13 19:50:59,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:50:59,520 INFO L225 Difference]: With dead ends: 1820 [2022-12-13 19:50:59,520 INFO L226 Difference]: Without dead ends: 1237 [2022-12-13 19:50:59,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:50:59,523 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1237 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2801 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 1931 SdHoareTripleChecker+Invalid, 2858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 19:50:59,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 1931 Invalid, 2858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2801 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 19:50:59,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-12-13 19:50:59,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 877. [2022-12-13 19:50:59,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 797 states have (on average 1.5671267252195733) internal successors, (1249), 800 states have internal predecessors, (1249), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-12-13 19:50:59,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1372 transitions. [2022-12-13 19:50:59,621 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1372 transitions. Word has length 144 [2022-12-13 19:50:59,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:50:59,621 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1372 transitions. [2022-12-13 19:50:59,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:50:59,622 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1372 transitions. [2022-12-13 19:50:59,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-13 19:50:59,624 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:50:59,624 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] [2022-12-13 19:50:59,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 19:50:59,625 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:50:59,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:59,625 INFO L85 PathProgramCache]: Analyzing trace with hash 567983454, now seen corresponding path program 1 times [2022-12-13 19:50:59,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:59,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559045668] [2022-12-13 19:50:59,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:59,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:59,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:50:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:59,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:50:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:59,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 19:50:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:59,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 19:50:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:59,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 19:50:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:50:59,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:50:59,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559045668] [2022-12-13 19:50:59,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559045668] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:50:59,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:50:59,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:50:59,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449748619] [2022-12-13 19:50:59,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:50:59,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:50:59,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:50:59,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:50:59,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:50:59,838 INFO L87 Difference]: Start difference. First operand 877 states and 1372 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:51:02,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:51:02,152 INFO L93 Difference]: Finished difference Result 2878 states and 4582 transitions. [2022-12-13 19:51:02,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:51:02,153 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-12-13 19:51:02,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:51:02,161 INFO L225 Difference]: With dead ends: 2878 [2022-12-13 19:51:02,161 INFO L226 Difference]: Without dead ends: 2018 [2022-12-13 19:51:02,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:51:02,163 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1235 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2797 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 19:51:02,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1251 Valid, 1929 Invalid, 2856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2797 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 19:51:02,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2022-12-13 19:51:02,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1432. [2022-12-13 19:51:02,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1302 states have (on average 1.5606758832565284) internal successors, (2032), 1307 states have internal predecessors, (2032), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-12-13 19:51:02,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2235 transitions. [2022-12-13 19:51:02,259 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2235 transitions. Word has length 144 [2022-12-13 19:51:02,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:51:02,259 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 2235 transitions. [2022-12-13 19:51:02,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:51:02,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2235 transitions. [2022-12-13 19:51:02,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-13 19:51:02,261 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:51:02,261 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] [2022-12-13 19:51:02,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 19:51:02,261 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:51:02,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:51:02,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1429817056, now seen corresponding path program 1 times [2022-12-13 19:51:02,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:51:02,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146249098] [2022-12-13 19:51:02,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:51:02,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:51:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:02,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:51:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:02,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:51:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:02,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 19:51:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:02,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 19:51:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:02,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 19:51:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:02,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:51:02,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:51:02,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146249098] [2022-12-13 19:51:02,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146249098] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:51:02,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:51:02,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:51:02,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98446266] [2022-12-13 19:51:02,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:51:02,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:51:02,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:51:02,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:51:02,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:51:02,441 INFO L87 Difference]: Start difference. First operand 1432 states and 2235 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:51:04,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:51:04,948 INFO L93 Difference]: Finished difference Result 4913 states and 7789 transitions. [2022-12-13 19:51:04,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:51:04,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-12-13 19:51:04,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:51:04,962 INFO L225 Difference]: With dead ends: 4913 [2022-12-13 19:51:04,962 INFO L226 Difference]: Without dead ends: 3498 [2022-12-13 19:51:04,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:51:04,967 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1231 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2788 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 2847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 19:51:04,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 1929 Invalid, 2847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2788 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 19:51:04,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2022-12-13 19:51:05,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 2543. [2022-12-13 19:51:05,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2543 states, 2313 states have (on average 1.5555555555555556) internal successors, (3598), 2322 states have internal predecessors, (3598), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-12-13 19:51:05,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 3967 transitions. [2022-12-13 19:51:05,268 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 3967 transitions. Word has length 144 [2022-12-13 19:51:05,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:51:05,268 INFO L495 AbstractCegarLoop]: Abstraction has 2543 states and 3967 transitions. [2022-12-13 19:51:05,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:51:05,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 3967 transitions. [2022-12-13 19:51:05,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-13 19:51:05,271 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:51:05,271 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] [2022-12-13 19:51:05,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 19:51:05,272 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:51:05,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:51:05,272 INFO L85 PathProgramCache]: Analyzing trace with hash -620591842, now seen corresponding path program 1 times [2022-12-13 19:51:05,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:51:05,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558499647] [2022-12-13 19:51:05,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:51:05,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:51:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:05,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:51:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:05,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:51:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:05,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 19:51:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:05,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 19:51:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:05,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 19:51:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:05,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:51:05,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:51:05,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558499647] [2022-12-13 19:51:05,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558499647] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:51:05,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:51:05,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:51:05,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146912624] [2022-12-13 19:51:05,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:51:05,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:51:05,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:51:05,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:51:05,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:51:05,464 INFO L87 Difference]: Start difference. First operand 2543 states and 3967 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:51:08,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:51:08,419 INFO L93 Difference]: Finished difference Result 8982 states and 14219 transitions. [2022-12-13 19:51:08,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:51:08,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-12-13 19:51:08,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:51:08,437 INFO L225 Difference]: With dead ends: 8982 [2022-12-13 19:51:08,437 INFO L226 Difference]: Without dead ends: 6456 [2022-12-13 19:51:08,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:51:08,442 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1233 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2774 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:51:08,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 1929 Invalid, 2833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2774 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 19:51:08,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2022-12-13 19:51:08,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 4770. [2022-12-13 19:51:08,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4770 states, 4340 states have (on average 1.552073732718894) internal successors, (6736), 4357 states have internal predecessors, (6736), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-12-13 19:51:08,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4770 states to 4770 states and 7455 transitions. [2022-12-13 19:51:08,833 INFO L78 Accepts]: Start accepts. Automaton has 4770 states and 7455 transitions. Word has length 144 [2022-12-13 19:51:08,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:51:08,833 INFO L495 AbstractCegarLoop]: Abstraction has 4770 states and 7455 transitions. [2022-12-13 19:51:08,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:51:08,833 INFO L276 IsEmpty]: Start isEmpty. Operand 4770 states and 7455 transitions. [2022-12-13 19:51:08,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-13 19:51:08,836 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:51:08,836 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] [2022-12-13 19:51:08,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 19:51:08,836 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:51:08,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:51:08,836 INFO L85 PathProgramCache]: Analyzing trace with hash -132544736, now seen corresponding path program 1 times [2022-12-13 19:51:08,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:51:08,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558418041] [2022-12-13 19:51:08,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:51:08,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:51:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:08,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:51:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:08,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:51:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:08,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 19:51:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:09,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 19:51:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:09,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 19:51:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:51:09,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:51:09,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558418041] [2022-12-13 19:51:09,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558418041] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:51:09,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:51:09,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:51:09,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132060782] [2022-12-13 19:51:09,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:51:09,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:51:09,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:51:09,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:51:09,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:51:09,020 INFO L87 Difference]: Start difference. First operand 4770 states and 7455 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:51:12,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:51:12,116 INFO L93 Difference]: Finished difference Result 17104 states and 27109 transitions. [2022-12-13 19:51:12,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:51:12,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-12-13 19:51:12,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:51:12,189 INFO L225 Difference]: With dead ends: 17104 [2022-12-13 19:51:12,189 INFO L226 Difference]: Without dead ends: 12351 [2022-12-13 19:51:12,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:51:12,208 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 1318 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 2444 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 2531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 19:51:12,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1334 Valid, 1275 Invalid, 2531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2444 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 19:51:12,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12351 states. [2022-12-13 19:51:12,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12351 to 9254. [2022-12-13 19:51:12,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9254 states, 8424 states have (on average 1.550807217473884) internal successors, (13064), 8457 states have internal predecessors, (13064), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-12-13 19:51:12,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9254 states to 9254 states and 14537 transitions. [2022-12-13 19:51:12,935 INFO L78 Accepts]: Start accepts. Automaton has 9254 states and 14537 transitions. Word has length 144 [2022-12-13 19:51:12,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:51:12,935 INFO L495 AbstractCegarLoop]: Abstraction has 9254 states and 14537 transitions. [2022-12-13 19:51:12,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:51:12,936 INFO L276 IsEmpty]: Start isEmpty. Operand 9254 states and 14537 transitions. [2022-12-13 19:51:12,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-13 19:51:12,952 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:51:12,952 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] [2022-12-13 19:51:12,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 19:51:12,953 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:51:12,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:51:12,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1414717022, now seen corresponding path program 1 times [2022-12-13 19:51:12,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:51:12,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390985579] [2022-12-13 19:51:12,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:51:12,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:51:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:13,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:51:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:13,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:51:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:13,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 19:51:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:13,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 19:51:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:13,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 19:51:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:13,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:51:13,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:51:13,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390985579] [2022-12-13 19:51:13,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390985579] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:51:13,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:51:13,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:51:13,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627645763] [2022-12-13 19:51:13,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:51:13,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:51:13,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:51:13,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:51:13,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:51:13,158 INFO L87 Difference]: Start difference. First operand 9254 states and 14537 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:51:18,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:51:18,062 INFO L93 Difference]: Finished difference Result 33382 states and 53145 transitions. [2022-12-13 19:51:18,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:51:18,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-12-13 19:51:18,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:51:18,144 INFO L225 Difference]: With dead ends: 33382 [2022-12-13 19:51:18,144 INFO L226 Difference]: Without dead ends: 24145 [2022-12-13 19:51:18,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:51:18,183 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1228 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2733 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 2792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:51:18,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1244 Valid, 1929 Invalid, 2792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2733 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 19:51:18,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24145 states. [2022-12-13 19:51:19,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24145 to 18251. [2022-12-13 19:51:19,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18251 states, 16621 states have (on average 1.5499669093315684) internal successors, (25762), 16686 states have internal predecessors, (25762), 1175 states have call successors, (1175), 390 states have call predecessors, (1175), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2022-12-13 19:51:19,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18251 states to 18251 states and 28905 transitions. [2022-12-13 19:51:19,843 INFO L78 Accepts]: Start accepts. Automaton has 18251 states and 28905 transitions. Word has length 144 [2022-12-13 19:51:19,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:51:19,843 INFO L495 AbstractCegarLoop]: Abstraction has 18251 states and 28905 transitions. [2022-12-13 19:51:19,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:51:19,844 INFO L276 IsEmpty]: Start isEmpty. Operand 18251 states and 28905 transitions. [2022-12-13 19:51:19,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-13 19:51:19,851 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:51:19,851 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] [2022-12-13 19:51:19,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 19:51:19,852 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:51:19,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:51:19,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1037774560, now seen corresponding path program 1 times [2022-12-13 19:51:19,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:51:19,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018438505] [2022-12-13 19:51:19,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:51:19,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:51:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:19,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:51:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:19,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:51:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:19,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 19:51:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:19,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 19:51:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:19,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 19:51:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:19,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:51:19,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:51:19,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018438505] [2022-12-13 19:51:19,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018438505] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:51:19,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:51:19,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:51:19,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19420622] [2022-12-13 19:51:19,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:51:19,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:51:19,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:51:19,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:51:19,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:51:19,994 INFO L87 Difference]: Start difference. First operand 18251 states and 28905 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:51:27,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:51:27,407 INFO L93 Difference]: Finished difference Result 65937 states and 105815 transitions. [2022-12-13 19:51:27,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:51:27,408 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-12-13 19:51:27,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:51:27,519 INFO L225 Difference]: With dead ends: 65937 [2022-12-13 19:51:27,519 INFO L226 Difference]: Without dead ends: 47703 [2022-12-13 19:51:27,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:51:27,558 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1227 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2720 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 2779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:51:27,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1243 Valid, 1929 Invalid, 2779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2720 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 19:51:27,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47703 states. [2022-12-13 19:51:30,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47703 to 36308. [2022-12-13 19:51:30,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36308 states, 33078 states have (on average 1.5494286232541266) internal successors, (51252), 33207 states have internal predecessors, (51252), 2327 states have call successors, (2327), 774 states have call predecessors, (2327), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2022-12-13 19:51:30,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36308 states to 36308 states and 58221 transitions. [2022-12-13 19:51:30,796 INFO L78 Accepts]: Start accepts. Automaton has 36308 states and 58221 transitions. Word has length 144 [2022-12-13 19:51:30,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:51:30,796 INFO L495 AbstractCegarLoop]: Abstraction has 36308 states and 58221 transitions. [2022-12-13 19:51:30,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:51:30,797 INFO L276 IsEmpty]: Start isEmpty. Operand 36308 states and 58221 transitions. [2022-12-13 19:51:30,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-13 19:51:30,808 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:51:30,808 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] [2022-12-13 19:51:30,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 19:51:30,808 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:51:30,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:51:30,809 INFO L85 PathProgramCache]: Analyzing trace with hash -684228126, now seen corresponding path program 1 times [2022-12-13 19:51:30,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:51:30,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101187491] [2022-12-13 19:51:30,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:51:30,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:51:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:30,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:51:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:30,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:51:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:30,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 19:51:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:30,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 19:51:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:30,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 19:51:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:30,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:51:30,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:51:30,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101187491] [2022-12-13 19:51:30,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101187491] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:51:30,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:51:30,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:51:30,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807746853] [2022-12-13 19:51:30,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:51:30,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:51:30,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:51:30,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:51:30,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:51:30,945 INFO L87 Difference]: Start difference. First operand 36308 states and 58221 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:51:44,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:51:44,021 INFO L93 Difference]: Finished difference Result 131048 states and 213005 transitions. [2022-12-13 19:51:44,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:51:44,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-12-13 19:51:44,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:51:44,262 INFO L225 Difference]: With dead ends: 131048 [2022-12-13 19:51:44,262 INFO L226 Difference]: Without dead ends: 94757 [2022-12-13 19:51:44,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:51:44,339 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1226 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 2766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:51:44,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 1929 Invalid, 2766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2707 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 19:51:44,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94757 states. [2022-12-13 19:51:50,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94757 to 72549. [2022-12-13 19:51:51,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72549 states, 66119 states have (on average 1.5490554908573935) internal successors, (102422), 66376 states have internal predecessors, (102422), 4631 states have call successors, (4631), 1542 states have call predecessors, (4631), 1798 states have return successors, (11448), 4886 states have call predecessors, (11448), 4631 states have call successors, (11448) [2022-12-13 19:51:51,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72549 states to 72549 states and 118501 transitions. [2022-12-13 19:51:51,211 INFO L78 Accepts]: Start accepts. Automaton has 72549 states and 118501 transitions. Word has length 144 [2022-12-13 19:51:51,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:51:51,211 INFO L495 AbstractCegarLoop]: Abstraction has 72549 states and 118501 transitions. [2022-12-13 19:51:51,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:51:51,212 INFO L276 IsEmpty]: Start isEmpty. Operand 72549 states and 118501 transitions. [2022-12-13 19:51:51,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-13 19:51:51,235 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:51:51,235 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] [2022-12-13 19:51:51,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 19:51:51,235 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:51:51,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:51:51,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1016871264, now seen corresponding path program 1 times [2022-12-13 19:51:51,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:51:51,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636488391] [2022-12-13 19:51:51,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:51:51,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:51:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:51,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:51:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:51,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:51:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:51,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 19:51:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:51,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 19:51:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:51,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 19:51:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:51,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:51:51,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:51:51,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636488391] [2022-12-13 19:51:51,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636488391] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:51:51,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:51:51,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:51:51,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157374096] [2022-12-13 19:51:51,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:51:51,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:51:51,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:51:51,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:51:51,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:51:51,375 INFO L87 Difference]: Start difference. First operand 72549 states and 118501 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:52:24,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:52:24,492 INFO L93 Difference]: Finished difference Result 295831 states and 485765 transitions. [2022-12-13 19:52:24,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 19:52:24,493 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-12-13 19:52:24,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:52:25,299 INFO L225 Difference]: With dead ends: 295831 [2022-12-13 19:52:25,299 INFO L226 Difference]: Without dead ends: 223299 [2022-12-13 19:52:25,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:52:25,471 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 1594 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 2687 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:52:25,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1620 Valid, 1919 Invalid, 2751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2687 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 19:52:25,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223299 states. [2022-12-13 19:52:39,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223299 to 144518. [2022-12-13 19:52:39,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144518 states, 131944 states have (on average 1.550900381980234) internal successors, (204632), 132457 states have internal predecessors, (204632), 8983 states have call successors, (8983), 3078 states have call predecessors, (8983), 3590 states have return successors, (29178), 9494 states have call predecessors, (29178), 8983 states have call successors, (29178) [2022-12-13 19:52:40,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144518 states to 144518 states and 242793 transitions. [2022-12-13 19:52:40,346 INFO L78 Accepts]: Start accepts. Automaton has 144518 states and 242793 transitions. Word has length 144 [2022-12-13 19:52:40,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:52:40,346 INFO L495 AbstractCegarLoop]: Abstraction has 144518 states and 242793 transitions. [2022-12-13 19:52:40,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:52:40,346 INFO L276 IsEmpty]: Start isEmpty. Operand 144518 states and 242793 transitions. [2022-12-13 19:52:40,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-13 19:52:40,393 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:52:40,393 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] [2022-12-13 19:52:40,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 19:52:40,393 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:52:40,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:52:40,394 INFO L85 PathProgramCache]: Analyzing trace with hash 912060962, now seen corresponding path program 1 times [2022-12-13 19:52:40,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:52:40,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900326097] [2022-12-13 19:52:40,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:52:40,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:52:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:52:40,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:52:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:52:40,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:52:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:52:40,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 19:52:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:52:40,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 19:52:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:52:40,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 19:52:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:52:40,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:52:40,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:52:40,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900326097] [2022-12-13 19:52:40,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900326097] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:52:40,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:52:40,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:52:40,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770894005] [2022-12-13 19:52:40,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:52:40,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:52:40,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:52:40,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:52:40,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:52:40,581 INFO L87 Difference]: Start difference. First operand 144518 states and 242793 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:53:48,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:53:48,442 INFO L93 Difference]: Finished difference Result 582390 states and 982859 transitions. [2022-12-13 19:53:48,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 19:53:48,442 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-12-13 19:53:48,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:53:50,183 INFO L225 Difference]: With dead ends: 582390 [2022-12-13 19:53:50,183 INFO L226 Difference]: Without dead ends: 437889 [2022-12-13 19:53:50,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:53:50,628 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 1306 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 3227 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-13 19:53:50,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 1915 Invalid, 3288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3227 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-13 19:53:50,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437889 states. [2022-12-13 19:54:21,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437889 to 285639. [2022-12-13 19:54:21,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285639 states, 261033 states have (on average 1.5523324637114848) internal successors, (405210), 262058 states have internal predecessors, (405210), 17431 states have call successors, (17431), 6150 states have call predecessors, (17431), 7174 states have return successors, (77504), 18454 states have call predecessors, (77504), 17431 states have call successors, (77504) [2022-12-13 19:54:23,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285639 states to 285639 states and 500145 transitions. [2022-12-13 19:54:23,098 INFO L78 Accepts]: Start accepts. Automaton has 285639 states and 500145 transitions. Word has length 144 [2022-12-13 19:54:23,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:54:23,098 INFO L495 AbstractCegarLoop]: Abstraction has 285639 states and 500145 transitions. [2022-12-13 19:54:23,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:54:23,099 INFO L276 IsEmpty]: Start isEmpty. Operand 285639 states and 500145 transitions. [2022-12-13 19:54:23,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-13 19:54:23,192 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:54:23,192 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] [2022-12-13 19:54:23,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 19:54:23,192 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:54:23,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:54:23,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1381020064, now seen corresponding path program 1 times [2022-12-13 19:54:23,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:54:23,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267625301] [2022-12-13 19:54:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:54:23,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:54:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:54:23,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:54:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:54:23,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:54:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:54:23,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 19:54:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:54:23,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 19:54:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:54:23,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 19:54:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:54:23,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:54:23,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:54:23,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267625301] [2022-12-13 19:54:23,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267625301] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:54:23,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:54:23,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:54:23,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220472953] [2022-12-13 19:54:23,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:54:23,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:54:23,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:54:23,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:54:23,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:54:23,323 INFO L87 Difference]: Start difference. First operand 285639 states and 500145 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:56:37,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:56:37,224 INFO L93 Difference]: Finished difference Result 1138357 states and 2001633 transitions. [2022-12-13 19:56:37,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 19:56:37,224 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-12-13 19:56:37,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:56:41,082 INFO L225 Difference]: With dead ends: 1138357 [2022-12-13 19:56:41,082 INFO L226 Difference]: Without dead ends: 852735 [2022-12-13 19:56:42,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:56:42,420 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 1520 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 2656 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 2720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:56:42,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 1919 Invalid, 2720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2656 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-13 19:56:42,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852735 states. [2022-12-13 19:57:49,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852735 to 569928. [2022-12-13 19:57:49,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569928 states, 521770 states have (on average 1.554271038963528) internal successors, (810972), 523819 states have internal predecessors, (810972), 33815 states have call successors, (33815), 12294 states have call predecessors, (33815), 14342 states have return successors, (213010), 35862 states have call predecessors, (213010), 33815 states have call successors, (213010) [2022-12-13 19:57:52,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569928 states to 569928 states and 1057797 transitions. [2022-12-13 19:57:52,767 INFO L78 Accepts]: Start accepts. Automaton has 569928 states and 1057797 transitions. Word has length 144 [2022-12-13 19:57:52,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:57:52,768 INFO L495 AbstractCegarLoop]: Abstraction has 569928 states and 1057797 transitions. [2022-12-13 19:57:52,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:57:52,768 INFO L276 IsEmpty]: Start isEmpty. Operand 569928 states and 1057797 transitions. [2022-12-13 19:57:53,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-13 19:57:53,133 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:57:53,133 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] [2022-12-13 19:57:53,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 19:57:53,134 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:57:53,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:57:53,134 INFO L85 PathProgramCache]: Analyzing trace with hash 346124898, now seen corresponding path program 1 times [2022-12-13 19:57:53,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:57:53,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124106042] [2022-12-13 19:57:53,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:53,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:57:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:53,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:57:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:53,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:57:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:53,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 19:57:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:53,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 19:57:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:53,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 19:57:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:53,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:57:53,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:57:53,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124106042] [2022-12-13 19:57:53,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124106042] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:57:53,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:57:53,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:57:53,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086978447] [2022-12-13 19:57:53,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:57:53,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:57:53,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:57:53,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:57:53,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:57:53,264 INFO L87 Difference]: Start difference. First operand 569928 states and 1057797 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:02:28,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:02:28,736 INFO L93 Difference]: Finished difference Result 2207282 states and 4132643 transitions. [2022-12-13 20:02:28,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 20:02:28,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-12-13 20:02:28,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted.