./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.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_ef973c4e-e046-4796-8a78-d0939957aeb2/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef973c4e-e046-4796-8a78-d0939957aeb2/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_ef973c4e-e046-4796-8a78-d0939957aeb2/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef973c4e-e046-4796-8a78-d0939957aeb2/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef973c4e-e046-4796-8a78-d0939957aeb2/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_ef973c4e-e046-4796-8a78-d0939957aeb2/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 a7e5f5a1db53b7a411af936e12a734750394ab6a9f7be60b4c793a1fb07a048c --- 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 12:02:55,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:02:55,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:02:55,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:02:55,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:02:55,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:02:55,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:02:55,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:02:55,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:02:55,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:02:55,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:02:55,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:02:55,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:02:55,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:02:55,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:02:55,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:02:55,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:02:55,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:02:55,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:02:55,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:02:55,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:02:55,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:02:55,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:02:55,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:02:55,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:02:55,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:02:55,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:02:55,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:02:55,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:02:55,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:02:55,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:02:55,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:02:55,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:02:55,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:02:55,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:02:55,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:02:55,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:02:55,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:02:55,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:02:55,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:02:55,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:02:55,725 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef973c4e-e046-4796-8a78-d0939957aeb2/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 12:02:55,753 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:02:55,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:02:55,754 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:02:55,754 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:02:55,755 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:02:55,755 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:02:55,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:02:55,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:02:55,756 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:02:55,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:02:55,756 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:02:55,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:02:55,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:02:55,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:02:55,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:02:55,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:02:55,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:02:55,757 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:02:55,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:02:55,757 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:02:55,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:02:55,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:02:55,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:02:55,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:02:55,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:02:55,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:02:55,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:02:55,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:02:55,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:02:55,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:02:55,764 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:02:55,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:02:55,764 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:02:55,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:02:55,764 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:02:55,765 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_ef973c4e-e046-4796-8a78-d0939957aeb2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef973c4e-e046-4796-8a78-d0939957aeb2/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7e5f5a1db53b7a411af936e12a734750394ab6a9f7be60b4c793a1fb07a048c [2022-12-13 12:02:55,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:02:55,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:02:55,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:02:55,974 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:02:55,974 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:02:55,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef973c4e-e046-4796-8a78-d0939957aeb2/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c [2022-12-13 12:02:58,492 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:02:58,935 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:02:58,936 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef973c4e-e046-4796-8a78-d0939957aeb2/sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c [2022-12-13 12:02:58,968 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef973c4e-e046-4796-8a78-d0939957aeb2/bin/uautomizer-uyxdKDjOR8/data/3cb14eb6d/e5c6f283a0a546df88fb6d6bc6bf668a/FLAG6a3f1d27b [2022-12-13 12:02:59,049 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef973c4e-e046-4796-8a78-d0939957aeb2/bin/uautomizer-uyxdKDjOR8/data/3cb14eb6d/e5c6f283a0a546df88fb6d6bc6bf668a [2022-12-13 12:02:59,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:02:59,051 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:02:59,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:02:59,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:02:59,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:02:59,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:02:59" (1/1) ... [2022-12-13 12:02:59,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da2e4d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:02:59, skipping insertion in model container [2022-12-13 12:02:59,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:02:59" (1/1) ... [2022-12-13 12:02:59,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:02:59,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:03:00,502 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_ef973c4e-e046-4796-8a78-d0939957aeb2/sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c[375709,375722] [2022-12-13 12:03:00,530 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_ef973c4e-e046-4796-8a78-d0939957aeb2/sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c[383339,383352] [2022-12-13 12:03:00,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:03:00,764 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:03:01,541 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_ef973c4e-e046-4796-8a78-d0939957aeb2/sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c[375709,375722] [2022-12-13 12:03:01,548 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_ef973c4e-e046-4796-8a78-d0939957aeb2/sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c[383339,383352] [2022-12-13 12:03:01,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:03:01,608 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:03:01,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:03:01 WrapperNode [2022-12-13 12:03:01,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:03:01,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:03:01,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:03:01,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:03:01,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:03:01" (1/1) ... [2022-12-13 12:03:01,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:03:01" (1/1) ... [2022-12-13 12:03:01,885 INFO L138 Inliner]: procedures = 64, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13083 [2022-12-13 12:03:01,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:03:01,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:03:01,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:03:01,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:03:01,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:03:01" (1/1) ... [2022-12-13 12:03:01,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:03:01" (1/1) ... [2022-12-13 12:03:01,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:03:01" (1/1) ... [2022-12-13 12:03:01,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:03:01" (1/1) ... [2022-12-13 12:03:02,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:03:01" (1/1) ... [2022-12-13 12:03:02,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:03:01" (1/1) ... [2022-12-13 12:03:02,194 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:03:01" (1/1) ... [2022-12-13 12:03:02,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:03:01" (1/1) ... [2022-12-13 12:03:02,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:03:02,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:03:02,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:03:02,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:03:02,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:03:01" (1/1) ... [2022-12-13 12:03:02,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:03:02,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef973c4e-e046-4796-8a78-d0939957aeb2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:03:02,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef973c4e-e046-4796-8a78-d0939957aeb2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:03:02,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef973c4e-e046-4796-8a78-d0939957aeb2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:03:02,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:03:02,322 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-12-13 12:03:02,322 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-12-13 12:03:02,322 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-13 12:03:02,322 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-13 12:03:02,322 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-12-13 12:03:02,322 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-12-13 12:03:02,322 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-12-13 12:03:02,322 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-12-13 12:03:02,322 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-12-13 12:03:02,322 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-12-13 12:03:02,322 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-12-13 12:03:02,322 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-12-13 12:03:02,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:03:02,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:03:02,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:03:02,428 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:03:02,430 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:03:07,926 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:03:07,945 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:03:07,945 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-12-13 12:03:07,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:03:07 BoogieIcfgContainer [2022-12-13 12:03:07,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:03:07,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:03:07,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:03:07,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:03:07,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:02:59" (1/3) ... [2022-12-13 12:03:07,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dcadda3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:03:07, skipping insertion in model container [2022-12-13 12:03:07,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:03:01" (2/3) ... [2022-12-13 12:03:07,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dcadda3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:03:07, skipping insertion in model container [2022-12-13 12:03:07,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:03:07" (3/3) ... [2022-12-13 12:03:07,956 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.10.cil-2.c [2022-12-13 12:03:07,970 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:03:07,970 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 12:03:08,044 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:03:08,049 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;@39d06290, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:03:08,049 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 12:03:08,059 INFO L276 IsEmpty]: Start isEmpty. Operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-12-13 12:03:08,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-12-13 12:03:08,072 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:08,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:03:08,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:08,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:08,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1879597445, now seen corresponding path program 1 times [2022-12-13 12:03:08,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:08,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31182595] [2022-12-13 12:03:08,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:08,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:08,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 12:03:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:08,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 12:03:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:08,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:03:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:08,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 12:03:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:08,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 12:03:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:08,460 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 12:03:08,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:08,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31182595] [2022-12-13 12:03:08,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31182595] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:03:08,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:03:08,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:03:08,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394436661] [2022-12-13 12:03:08,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:03:08,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:03:08,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:08,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:03:08,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:03:08,500 INFO L87 Difference]: Start difference. First operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 12:03:10,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:10,030 INFO L93 Difference]: Finished difference Result 5140 states and 9446 transitions. [2022-12-13 12:03:10,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:03:10,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 156 [2022-12-13 12:03:10,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:10,056 INFO L225 Difference]: With dead ends: 5140 [2022-12-13 12:03:10,056 INFO L226 Difference]: Without dead ends: 2568 [2022-12-13 12:03:10,064 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 12:03:10,067 INFO L413 NwaCegarLoop]: 4326 mSDtfsCounter, 888 mSDsluCounter, 12413 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 16739 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:10,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 16739 Invalid, 931 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 12:03:10,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2022-12-13 12:03:10,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2448. [2022-12-13 12:03:10,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2416 states have (on average 1.830298013245033) internal successors, (4422), 2418 states have internal predecessors, (4422), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-12-13 12:03:10,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4470 transitions. [2022-12-13 12:03:10,194 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4470 transitions. Word has length 156 [2022-12-13 12:03:10,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:10,194 INFO L495 AbstractCegarLoop]: Abstraction has 2448 states and 4470 transitions. [2022-12-13 12:03:10,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 12:03:10,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4470 transitions. [2022-12-13 12:03:10,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-12-13 12:03:10,199 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:10,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:03:10,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:03:10,199 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:10,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:10,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1988815353, now seen corresponding path program 1 times [2022-12-13 12:03:10,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:10,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329003272] [2022-12-13 12:03:10,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:10,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:10,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 12:03:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:10,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 12:03:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:10,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:03:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:10,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 12:03:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:10,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 12:03:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:10,486 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 12:03:10,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:10,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329003272] [2022-12-13 12:03:10,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329003272] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:03:10,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:03:10,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:03:10,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611845562] [2022-12-13 12:03:10,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:03:10,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:03:10,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:10,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:03:10,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:03:10,491 INFO L87 Difference]: Start difference. First operand 2448 states and 4470 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:03:13,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:13,223 INFO L93 Difference]: Finished difference Result 3341 states and 5922 transitions. [2022-12-13 12:03:13,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 12:03:13,224 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-12-13 12:03:13,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:13,231 INFO L225 Difference]: With dead ends: 3341 [2022-12-13 12:03:13,231 INFO L226 Difference]: Without dead ends: 3032 [2022-12-13 12:03:13,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 12:03:13,234 INFO L413 NwaCegarLoop]: 4443 mSDtfsCounter, 5233 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3189 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 21893 SdHoareTripleChecker+Invalid, 3253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:13,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 21893 Invalid, 3253 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 3189 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 12:03:13,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2022-12-13 12:03:13,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 2775. [2022-12-13 12:03:13,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 2714 states have (on average 1.8043478260869565) internal successors, (4897), 2718 states have internal predecessors, (4897), 45 states have call successors, (45), 12 states have call predecessors, (45), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2022-12-13 12:03:13,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 4994 transitions. [2022-12-13 12:03:13,309 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 4994 transitions. Word has length 156 [2022-12-13 12:03:13,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:13,309 INFO L495 AbstractCegarLoop]: Abstraction has 2775 states and 4994 transitions. [2022-12-13 12:03:13,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:03:13,309 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 4994 transitions. [2022-12-13 12:03:13,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-12-13 12:03:13,313 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:13,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:03:13,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:03:13,313 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:13,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:13,314 INFO L85 PathProgramCache]: Analyzing trace with hash 371374903, now seen corresponding path program 1 times [2022-12-13 12:03:13,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:13,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364197841] [2022-12-13 12:03:13,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:13,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 12:03:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 12:03:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:03:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 12:03:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 12:03:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,521 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 12:03:13,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:13,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364197841] [2022-12-13 12:03:13,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364197841] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:03:13,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:03:13,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:03:13,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298618256] [2022-12-13 12:03:13,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:03:13,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:03:13,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:13,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:03:13,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:03:13,524 INFO L87 Difference]: Start difference. First operand 2775 states and 4994 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:03:16,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:16,381 INFO L93 Difference]: Finished difference Result 4476 states and 7734 transitions. [2022-12-13 12:03:16,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 12:03:16,381 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-12-13 12:03:16,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:16,392 INFO L225 Difference]: With dead ends: 4476 [2022-12-13 12:03:16,392 INFO L226 Difference]: Without dead ends: 3842 [2022-12-13 12:03:16,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 12:03:16,395 INFO L413 NwaCegarLoop]: 4414 mSDtfsCounter, 5274 mSDsluCounter, 17375 mSDsCounter, 0 mSdLazyCounter, 2997 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5291 SdHoareTripleChecker+Valid, 21789 SdHoareTripleChecker+Invalid, 3067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:16,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5291 Valid, 21789 Invalid, 3067 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 2997 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-13 12:03:16,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2022-12-13 12:03:16,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 3377. [2022-12-13 12:03:16,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 3264 states have (on average 1.7634803921568627) internal successors, (5756), 3270 states have internal predecessors, (5756), 83 states have call successors, (83), 24 states have call predecessors, (83), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2022-12-13 12:03:16,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 5939 transitions. [2022-12-13 12:03:16,577 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 5939 transitions. Word has length 156 [2022-12-13 12:03:16,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:16,577 INFO L495 AbstractCegarLoop]: Abstraction has 3377 states and 5939 transitions. [2022-12-13 12:03:16,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:03:16,577 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 5939 transitions. [2022-12-13 12:03:16,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-12-13 12:03:16,580 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:16,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:03:16,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:03:16,581 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:16,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:16,581 INFO L85 PathProgramCache]: Analyzing trace with hash 734841401, now seen corresponding path program 1 times [2022-12-13 12:03:16,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:16,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412731393] [2022-12-13 12:03:16,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:16,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:16,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 12:03:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:16,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 12:03:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:16,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:03:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:16,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 12:03:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:16,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 12:03:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:16,806 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 12:03:16,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:16,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412731393] [2022-12-13 12:03:16,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412731393] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:03:16,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:03:16,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:03:16,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661313197] [2022-12-13 12:03:16,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:03:16,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:03:16,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:16,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:03:16,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:03:16,809 INFO L87 Difference]: Start difference. First operand 3377 states and 5939 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:03:19,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:19,724 INFO L93 Difference]: Finished difference Result 6696 states and 11267 transitions. [2022-12-13 12:03:19,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 12:03:19,725 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-12-13 12:03:19,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:19,739 INFO L225 Difference]: With dead ends: 6696 [2022-12-13 12:03:19,739 INFO L226 Difference]: Without dead ends: 5460 [2022-12-13 12:03:19,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 12:03:19,744 INFO L413 NwaCegarLoop]: 4440 mSDtfsCounter, 5233 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3179 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 21890 SdHoareTripleChecker+Invalid, 3245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:19,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 21890 Invalid, 3245 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3179 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-13 12:03:19,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2022-12-13 12:03:19,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 4583. [2022-12-13 12:03:19,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4583 states, 4366 states have (on average 1.712322491983509) internal successors, (7476), 4376 states have internal predecessors, (7476), 159 states have call successors, (159), 48 states have call predecessors, (159), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2022-12-13 12:03:19,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4583 states to 4583 states and 7837 transitions. [2022-12-13 12:03:19,964 INFO L78 Accepts]: Start accepts. Automaton has 4583 states and 7837 transitions. Word has length 156 [2022-12-13 12:03:19,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:19,965 INFO L495 AbstractCegarLoop]: Abstraction has 4583 states and 7837 transitions. [2022-12-13 12:03:19,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:03:19,965 INFO L276 IsEmpty]: Start isEmpty. Operand 4583 states and 7837 transitions. [2022-12-13 12:03:19,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-12-13 12:03:19,969 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:19,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:03:19,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 12:03:19,969 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:19,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:19,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1023660791, now seen corresponding path program 1 times [2022-12-13 12:03:19,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:19,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675835471] [2022-12-13 12:03:19,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:19,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:20,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 12:03:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:20,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 12:03:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:20,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:03:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:20,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 12:03:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:20,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 12:03:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:20,168 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 12:03:20,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:20,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675835471] [2022-12-13 12:03:20,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675835471] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:03:20,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:03:20,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:03:20,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967849875] [2022-12-13 12:03:20,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:03:20,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:03:20,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:20,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:03:20,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:03:20,170 INFO L87 Difference]: Start difference. First operand 4583 states and 7837 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:03:23,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:23,479 INFO L93 Difference]: Finished difference Result 11134 states and 18347 transitions. [2022-12-13 12:03:23,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 12:03:23,480 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-12-13 12:03:23,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:23,501 INFO L225 Difference]: With dead ends: 11134 [2022-12-13 12:03:23,502 INFO L226 Difference]: Without dead ends: 8692 [2022-12-13 12:03:23,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 12:03:23,508 INFO L413 NwaCegarLoop]: 4440 mSDtfsCounter, 5233 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3170 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 21890 SdHoareTripleChecker+Invalid, 3236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:23,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 21890 Invalid, 3236 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3170 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-13 12:03:23,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8692 states. [2022-12-13 12:03:23,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8692 to 7001. [2022-12-13 12:03:23,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 6576 states have (on average 1.6611922141119222) internal successors, (10924), 6594 states have internal predecessors, (10924), 311 states have call successors, (311), 96 states have call predecessors, (311), 112 states have return successors, (424), 326 states have call predecessors, (424), 311 states have call successors, (424) [2022-12-13 12:03:23,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 11659 transitions. [2022-12-13 12:03:23,904 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 11659 transitions. Word has length 156 [2022-12-13 12:03:23,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:23,904 INFO L495 AbstractCegarLoop]: Abstraction has 7001 states and 11659 transitions. [2022-12-13 12:03:23,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:03:23,906 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 11659 transitions. [2022-12-13 12:03:23,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-12-13 12:03:23,911 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:23,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:03:23,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:03:23,911 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:23,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:23,912 INFO L85 PathProgramCache]: Analyzing trace with hash 478788217, now seen corresponding path program 1 times [2022-12-13 12:03:23,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:23,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486488545] [2022-12-13 12:03:23,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:23,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:24,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 12:03:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:24,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 12:03:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:24,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:03:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:24,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 12:03:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:24,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 12:03:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:24,110 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 12:03:24,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:24,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486488545] [2022-12-13 12:03:24,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486488545] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:03:24,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:03:24,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:03:24,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757779756] [2022-12-13 12:03:24,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:03:24,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:03:24,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:24,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:03:24,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:03:24,113 INFO L87 Difference]: Start difference. First operand 7001 states and 11659 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:03:28,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:28,179 INFO L93 Difference]: Finished difference Result 20008 states and 32563 transitions. [2022-12-13 12:03:28,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 12:03:28,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-12-13 12:03:28,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:28,216 INFO L225 Difference]: With dead ends: 20008 [2022-12-13 12:03:28,216 INFO L226 Difference]: Without dead ends: 15148 [2022-12-13 12:03:28,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 12:03:28,227 INFO L413 NwaCegarLoop]: 4440 mSDtfsCounter, 5233 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3161 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 21890 SdHoareTripleChecker+Invalid, 3227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:28,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 21890 Invalid, 3227 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3161 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 12:03:28,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15148 states. [2022-12-13 12:03:28,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15148 to 11851. [2022-12-13 12:03:28,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11851 states, 11010 states have (on average 1.620345140781108) internal successors, (17840), 11044 states have internal predecessors, (17840), 615 states have call successors, (615), 192 states have call predecessors, (615), 224 states have return successors, (922), 646 states have call predecessors, (922), 615 states have call successors, (922) [2022-12-13 12:03:29,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11851 states to 11851 states and 19377 transitions. [2022-12-13 12:03:29,002 INFO L78 Accepts]: Start accepts. Automaton has 11851 states and 19377 transitions. Word has length 156 [2022-12-13 12:03:29,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:29,002 INFO L495 AbstractCegarLoop]: Abstraction has 11851 states and 19377 transitions. [2022-12-13 12:03:29,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:03:29,002 INFO L276 IsEmpty]: Start isEmpty. Operand 11851 states and 19377 transitions. [2022-12-13 12:03:29,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-12-13 12:03:29,007 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:29,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:03:29,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:03:29,008 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:29,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:29,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1153948343, now seen corresponding path program 1 times [2022-12-13 12:03:29,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:29,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818519843] [2022-12-13 12:03:29,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:29,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:29,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 12:03:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:29,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 12:03:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:29,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:03:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:29,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 12:03:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:29,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 12:03:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:29,197 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 12:03:29,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:29,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818519843] [2022-12-13 12:03:29,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818519843] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:03:29,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:03:29,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:03:29,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546830830] [2022-12-13 12:03:29,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:03:29,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:03:29,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:29,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:03:29,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:03:29,199 INFO L87 Difference]: Start difference. First operand 11851 states and 19377 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:03:34,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:34,012 INFO L93 Difference]: Finished difference Result 37754 states and 61183 transitions. [2022-12-13 12:03:34,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 12:03:34,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-12-13 12:03:34,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:34,124 INFO L225 Difference]: With dead ends: 37754 [2022-12-13 12:03:34,124 INFO L226 Difference]: Without dead ends: 28044 [2022-12-13 12:03:34,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 12:03:34,157 INFO L413 NwaCegarLoop]: 4440 mSDtfsCounter, 5233 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3152 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 21890 SdHoareTripleChecker+Invalid, 3218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:34,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 21890 Invalid, 3218 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3152 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 12:03:34,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28044 states. [2022-12-13 12:03:35,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28044 to 21581. [2022-12-13 12:03:35,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21581 states, 19908 states have (on average 1.593128390596745) internal successors, (31716), 19974 states have internal predecessors, (31716), 1223 states have call successors, (1223), 384 states have call predecessors, (1223), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2022-12-13 12:03:35,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21581 states to 21581 states and 35019 transitions. [2022-12-13 12:03:35,884 INFO L78 Accepts]: Start accepts. Automaton has 21581 states and 35019 transitions. Word has length 156 [2022-12-13 12:03:35,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:35,884 INFO L495 AbstractCegarLoop]: Abstraction has 21581 states and 35019 transitions. [2022-12-13 12:03:35,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:03:35,884 INFO L276 IsEmpty]: Start isEmpty. Operand 21581 states and 35019 transitions. [2022-12-13 12:03:35,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-12-13 12:03:35,896 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:35,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:03:35,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 12:03:35,897 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:35,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:35,898 INFO L85 PathProgramCache]: Analyzing trace with hash 205896377, now seen corresponding path program 1 times [2022-12-13 12:03:35,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:35,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592772388] [2022-12-13 12:03:35,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:35,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:35,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 12:03:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:36,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 12:03:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:36,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:03:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:36,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 12:03:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:36,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 12:03:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:36,066 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 12:03:36,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:36,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592772388] [2022-12-13 12:03:36,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592772388] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:03:36,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:03:36,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:03:36,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83861272] [2022-12-13 12:03:36,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:03:36,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:03:36,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:36,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:03:36,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:03:36,067 INFO L87 Difference]: Start difference. First operand 21581 states and 35019 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:03:40,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:40,310 INFO L93 Difference]: Finished difference Result 47941 states and 78380 transitions. [2022-12-13 12:03:40,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:03:40,310 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-12-13 12:03:40,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:40,400 INFO L225 Difference]: With dead ends: 47941 [2022-12-13 12:03:40,400 INFO L226 Difference]: Without dead ends: 28499 [2022-12-13 12:03:40,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:03:40,436 INFO L413 NwaCegarLoop]: 4216 mSDtfsCounter, 4929 mSDsluCounter, 16635 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 20851 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:40,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4947 Valid, 20851 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 12:03:40,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28499 states. [2022-12-13 12:03:42,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28499 to 21581. [2022-12-13 12:03:42,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21581 states, 19908 states have (on average 1.5898633715089412) internal successors, (31651), 19974 states have internal predecessors, (31651), 1223 states have call successors, (1223), 384 states have call predecessors, (1223), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2022-12-13 12:03:42,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21581 states to 21581 states and 34954 transitions. [2022-12-13 12:03:42,334 INFO L78 Accepts]: Start accepts. Automaton has 21581 states and 34954 transitions. Word has length 156 [2022-12-13 12:03:42,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:42,334 INFO L495 AbstractCegarLoop]: Abstraction has 21581 states and 34954 transitions. [2022-12-13 12:03:42,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:03:42,335 INFO L276 IsEmpty]: Start isEmpty. Operand 21581 states and 34954 transitions. [2022-12-13 12:03:42,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-12-13 12:03:42,344 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:42,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:03:42,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 12:03:42,345 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:42,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:42,345 INFO L85 PathProgramCache]: Analyzing trace with hash -378875273, now seen corresponding path program 1 times [2022-12-13 12:03:42,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:42,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867428003] [2022-12-13 12:03:42,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:42,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:42,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 12:03:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:42,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 12:03:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:42,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:03:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:42,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 12:03:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:42,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 12:03:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:42,541 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 12:03:42,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:42,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867428003] [2022-12-13 12:03:42,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867428003] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:03:42,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:03:42,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:03:42,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748032196] [2022-12-13 12:03:42,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:03:42,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:03:42,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:42,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:03:42,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:03:42,543 INFO L87 Difference]: Start difference. First operand 21581 states and 34954 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:03:50,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:50,848 INFO L93 Difference]: Finished difference Result 73117 states and 118447 transitions. [2022-12-13 12:03:50,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 12:03:50,849 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-12-13 12:03:50,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:50,981 INFO L225 Difference]: With dead ends: 73117 [2022-12-13 12:03:50,981 INFO L226 Difference]: Without dead ends: 53677 [2022-12-13 12:03:51,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 12:03:51,028 INFO L413 NwaCegarLoop]: 4440 mSDtfsCounter, 5265 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3032 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5282 SdHoareTripleChecker+Valid, 21890 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:51,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5282 Valid, 21890 Invalid, 3098 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3032 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 12:03:51,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53677 states. [2022-12-13 12:03:54,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53677 to 41230. [2022-12-13 12:03:54,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41230 states, 37893 states have (on average 1.5734304488955744) internal successors, (59622), 38023 states have internal predecessors, (59622), 2439 states have call successors, (2439), 768 states have call predecessors, (2439), 896 states have return successors, (4882), 2566 states have call predecessors, (4882), 2439 states have call successors, (4882) [2022-12-13 12:03:55,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41230 states to 41230 states and 66943 transitions. [2022-12-13 12:03:55,054 INFO L78 Accepts]: Start accepts. Automaton has 41230 states and 66943 transitions. Word has length 156 [2022-12-13 12:03:55,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:55,054 INFO L495 AbstractCegarLoop]: Abstraction has 41230 states and 66943 transitions. [2022-12-13 12:03:55,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:03:55,054 INFO L276 IsEmpty]: Start isEmpty. Operand 41230 states and 66943 transitions. [2022-12-13 12:03:55,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-12-13 12:03:55,066 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:55,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:03:55,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 12:03:55,067 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:55,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:55,067 INFO L85 PathProgramCache]: Analyzing trace with hash -808533579, now seen corresponding path program 1 times [2022-12-13 12:03:55,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:55,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062822570] [2022-12-13 12:03:55,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:55,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 12:03:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 12:03:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:03:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 12:03:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 12:03:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,222 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 12:03:55,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:55,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062822570] [2022-12-13 12:03:55,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062822570] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:03:55,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:03:55,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:03:55,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940280862] [2022-12-13 12:03:55,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:03:55,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:03:55,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:55,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:03:55,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:03:55,224 INFO L87 Difference]: Start difference. First operand 41230 states and 66943 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:04:09,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:04:09,676 INFO L93 Difference]: Finished difference Result 144096 states and 235584 transitions. [2022-12-13 12:04:09,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 12:04:09,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-12-13 12:04:09,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:04:09,989 INFO L225 Difference]: With dead ends: 144096 [2022-12-13 12:04:09,989 INFO L226 Difference]: Without dead ends: 105007 [2022-12-13 12:04:10,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 12:04:10,088 INFO L413 NwaCegarLoop]: 4414 mSDtfsCounter, 5291 mSDsluCounter, 17375 mSDsCounter, 0 mSdLazyCounter, 2892 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5308 SdHoareTripleChecker+Valid, 21789 SdHoareTripleChecker+Invalid, 2962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:04:10,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5308 Valid, 21789 Invalid, 2962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2892 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 12:04:10,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105007 states. [2022-12-13 12:04:17,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105007 to 80656. [2022-12-13 12:04:17,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80656 states, 73991 states have (on average 1.564460542498412) internal successors, (115756), 74249 states have internal predecessors, (115756), 4871 states have call successors, (4871), 1536 states have call predecessors, (4871), 1792 states have return successors, (11944), 5126 states have call predecessors, (11944), 4871 states have call successors, (11944) [2022-12-13 12:04:18,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80656 states to 80656 states and 132571 transitions. [2022-12-13 12:04:18,065 INFO L78 Accepts]: Start accepts. Automaton has 80656 states and 132571 transitions. Word has length 156 [2022-12-13 12:04:18,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:04:18,065 INFO L495 AbstractCegarLoop]: Abstraction has 80656 states and 132571 transitions. [2022-12-13 12:04:18,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:04:18,065 INFO L276 IsEmpty]: Start isEmpty. Operand 80656 states and 132571 transitions. [2022-12-13 12:04:18,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-12-13 12:04:18,090 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:04:18,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:04:18,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 12:04:18,091 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:04:18,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:04:18,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1515130185, now seen corresponding path program 1 times [2022-12-13 12:04:18,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:04:18,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530121634] [2022-12-13 12:04:18,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:04:18,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:04:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 12:04:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 12:04:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:04:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 12:04:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 12:04:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,235 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 12:04:18,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:04:18,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530121634] [2022-12-13 12:04:18,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530121634] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:04:18,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:04:18,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:04:18,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877077991] [2022-12-13 12:04:18,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:04:18,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:04:18,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:04:18,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:04:18,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:04:18,236 INFO L87 Difference]: Start difference. First operand 80656 states and 132571 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:04:57,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:04:57,661 INFO L93 Difference]: Finished difference Result 324198 states and 533868 transitions. [2022-12-13 12:04:57,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 12:04:57,662 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-12-13 12:04:57,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:04:58,539 INFO L225 Difference]: With dead ends: 324198 [2022-12-13 12:04:58,540 INFO L226 Difference]: Without dead ends: 245683 [2022-12-13 12:04:58,899 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 12:04:58,899 INFO L413 NwaCegarLoop]: 4438 mSDtfsCounter, 5675 mSDsluCounter, 17442 mSDsCounter, 0 mSdLazyCounter, 2999 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5703 SdHoareTripleChecker+Valid, 21880 SdHoareTripleChecker+Invalid, 3070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 12:04:58,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5703 Valid, 21880 Invalid, 3070 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 2999 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 12:04:59,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245683 states. [2022-12-13 12:05:16,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245683 to 158996. [2022-12-13 12:05:16,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158996 states, 145931 states have (on average 1.561669556160103) internal successors, (227896), 146445 states have internal predecessors, (227896), 9479 states have call successors, (9479), 3072 states have call predecessors, (9479), 3584 states have return successors, (30186), 9990 states have call predecessors, (30186), 9479 states have call successors, (30186) [2022-12-13 12:05:16,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158996 states to 158996 states and 267561 transitions. [2022-12-13 12:05:16,989 INFO L78 Accepts]: Start accepts. Automaton has 158996 states and 267561 transitions. Word has length 156 [2022-12-13 12:05:16,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:05:16,989 INFO L495 AbstractCegarLoop]: Abstraction has 158996 states and 267561 transitions. [2022-12-13 12:05:16,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:05:16,989 INFO L276 IsEmpty]: Start isEmpty. Operand 158996 states and 267561 transitions. [2022-12-13 12:05:17,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-12-13 12:05:17,040 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:05:17,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:05:17,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 12:05:17,040 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:05:17,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:05:17,040 INFO L85 PathProgramCache]: Analyzing trace with hash -568092299, now seen corresponding path program 1 times [2022-12-13 12:05:17,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:05:17,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233464745] [2022-12-13 12:05:17,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:05:17,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:05:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:17,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 12:05:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:17,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 12:05:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:17,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:05:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:17,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 12:05:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:17,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 12:05:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:17,202 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 12:05:17,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:05:17,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233464745] [2022-12-13 12:05:17,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233464745] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:05:17,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:05:17,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:05:17,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115070275] [2022-12-13 12:05:17,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:05:17,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:05:17,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:05:17,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:05:17,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:05:17,205 INFO L87 Difference]: Start difference. First operand 158996 states and 267561 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:06:40,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:06:40,419 INFO L93 Difference]: Finished difference Result 637810 states and 1076376 transitions. [2022-12-13 12:06:40,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 12:06:40,419 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-12-13 12:06:40,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:06:42,475 INFO L225 Difference]: With dead ends: 637810 [2022-12-13 12:06:42,475 INFO L226 Difference]: Without dead ends: 480955 [2022-12-13 12:06:43,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 12:06:43,007 INFO L413 NwaCegarLoop]: 4437 mSDtfsCounter, 5360 mSDsluCounter, 17439 mSDsCounter, 0 mSdLazyCounter, 3600 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5376 SdHoareTripleChecker+Valid, 21876 SdHoareTripleChecker+Invalid, 3668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:06:43,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5376 Valid, 21876 Invalid, 3668 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 3600 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-13 12:06:43,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480955 states. [2022-12-13 12:07:20,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480955 to 312860. [2022-12-13 12:07:20,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312860 states, 287251 states have (on average 1.5607813375758484) internal successors, (448336), 288277 states have internal predecessors, (448336), 18439 states have call successors, (18439), 6144 states have call predecessors, (18439), 7168 states have return successors, (79536), 19462 states have call predecessors, (79536), 18439 states have call successors, (79536) [2022-12-13 12:07:22,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312860 states to 312860 states and 546311 transitions. [2022-12-13 12:07:22,092 INFO L78 Accepts]: Start accepts. Automaton has 312860 states and 546311 transitions. Word has length 156 [2022-12-13 12:07:22,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:07:22,092 INFO L495 AbstractCegarLoop]: Abstraction has 312860 states and 546311 transitions. [2022-12-13 12:07:22,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:07:22,092 INFO L276 IsEmpty]: Start isEmpty. Operand 312860 states and 546311 transitions. [2022-12-13 12:07:22,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-12-13 12:07:22,189 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:07:22,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:07:22,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 12:07:22,190 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:07:22,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:07:22,190 INFO L85 PathProgramCache]: Analyzing trace with hash 293741303, now seen corresponding path program 1 times [2022-12-13 12:07:22,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:07:22,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385448907] [2022-12-13 12:07:22,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:07:22,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:07:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:22,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 12:07:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:22,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 12:07:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:22,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:07:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:22,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 12:07:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:22,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 12:07:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:22,342 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 12:07:22,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:07:22,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385448907] [2022-12-13 12:07:22,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385448907] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:07:22,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:07:22,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:07:22,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566143997] [2022-12-13 12:07:22,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:07:22,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:07:22,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:07:22,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:07:22,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:07:22,344 INFO L87 Difference]: Start difference. First operand 312860 states and 546311 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:10:18,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:10:18,400 INFO L93 Difference]: Finished difference Result 1247882 states and 2185976 transitions. [2022-12-13 12:10:18,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 12:10:18,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-12-13 12:10:18,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:10:23,225 INFO L225 Difference]: With dead ends: 1247882 [2022-12-13 12:10:23,225 INFO L226 Difference]: Without dead ends: 937163 [2022-12-13 12:10:24,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 12:10:24,853 INFO L413 NwaCegarLoop]: 4438 mSDtfsCounter, 5599 mSDsluCounter, 17442 mSDsCounter, 0 mSdLazyCounter, 2973 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5627 SdHoareTripleChecker+Valid, 21880 SdHoareTripleChecker+Invalid, 3044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 12:10:24,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5627 Valid, 21880 Invalid, 3044 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 2973 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 12:10:25,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937163 states. [2022-12-13 12:11:55,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937163 to 622636. [2022-12-13 12:11:55,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622636 states, 572451 states have (on average 1.5613982681487149) internal successors, (893824), 574501 states have internal predecessors, (893824), 35847 states have call successors, (35847), 12288 states have call predecessors, (35847), 14336 states have return successors, (217090), 37894 states have call predecessors, (217090), 35847 states have call successors, (217090) [2022-12-13 12:11:59,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622636 states to 622636 states and 1146761 transitions. [2022-12-13 12:11:59,547 INFO L78 Accepts]: Start accepts. Automaton has 622636 states and 1146761 transitions. Word has length 156 [2022-12-13 12:11:59,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:11:59,548 INFO L495 AbstractCegarLoop]: Abstraction has 622636 states and 1146761 transitions. [2022-12-13 12:11:59,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 12:11:59,548 INFO L276 IsEmpty]: Start isEmpty. Operand 622636 states and 1146761 transitions. [2022-12-13 12:11:59,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-12-13 12:11:59,749 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:11:59,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:11:59,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 12:11:59,749 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:11:59,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:11:59,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1756667595, now seen corresponding path program 1 times [2022-12-13 12:11:59,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:11:59,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283515871] [2022-12-13 12:11:59,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:11:59,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:11:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:11:59,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 12:11:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:11:59,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 12:11:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:11:59,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:11:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:11:59,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 12:11:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:11:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 12:11:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:11:59,899 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 12:11:59,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:11:59,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283515871] [2022-12-13 12:11:59,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283515871] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:11:59,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:11:59,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:11:59,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143304290] [2022-12-13 12:11:59,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:11:59,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:11:59,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:11:59,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:11:59,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:11:59,901 INFO L87 Difference]: Start difference. First operand 622636 states and 1146761 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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)