./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_3b67ff6b-a7e6-4b38-be21-48dbe8d5cdcf/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b67ff6b-a7e6-4b38-be21-48dbe8d5cdcf/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b67ff6b-a7e6-4b38-be21-48dbe8d5cdcf/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b67ff6b-a7e6-4b38-be21-48dbe8d5cdcf/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b67ff6b-a7e6-4b38-be21-48dbe8d5cdcf/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b67ff6b-a7e6-4b38-be21-48dbe8d5cdcf/bin/uautomizer-TMbwUNV5ro --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 48263e5b2fdfa125a212d9dd2b1aa7b4bc28734093ef4904b2507084a0cf2933 --- 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-8393723 [2022-11-18 21:09:24,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:09:24,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:09:24,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:09:24,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:09:24,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:09:24,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:09:24,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:09:24,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:09:24,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:09:24,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:09:24,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:09:24,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:09:24,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:09:24,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:09:24,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:09:24,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:09:24,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:09:24,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:09:24,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:09:24,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:09:24,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:09:24,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:09:24,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:09:24,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:09:24,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:09:24,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:09:24,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:09:24,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:09:24,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:09:24,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:09:24,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:09:24,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:09:24,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:09:24,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:09:24,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:09:24,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:09:24,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:09:24,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:09:24,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:09:24,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:09:24,462 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b67ff6b-a7e6-4b38-be21-48dbe8d5cdcf/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 21:09:24,497 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:09:24,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:09:24,498 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:09:24,498 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:09:24,499 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:09:24,499 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:09:24,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:09:24,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:09:24,501 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:09:24,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:09:24,502 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:09:24,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:09:24,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:09:24,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:09:24,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:09:24,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:09:24,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:09:24,505 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:09:24,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:09:24,505 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:09:24,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:09:24,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:09:24,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:09:24,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:09:24,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:09:24,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:09:24,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:09:24,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:09:24,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:09:24,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:09:24,510 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:09:24,510 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:09:24,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:09:24,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_3b67ff6b-a7e6-4b38-be21-48dbe8d5cdcf/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b67ff6b-a7e6-4b38-be21-48dbe8d5cdcf/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48263e5b2fdfa125a212d9dd2b1aa7b4bc28734093ef4904b2507084a0cf2933 [2022-11-18 21:09:24,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:09:25,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:09:25,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:09:25,016 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:09:25,018 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:09:25,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b67ff6b-a7e6-4b38-be21-48dbe8d5cdcf/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-2.c [2022-11-18 21:09:25,167 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b67ff6b-a7e6-4b38-be21-48dbe8d5cdcf/bin/uautomizer-TMbwUNV5ro/data/f8c2d17f2/7f172bf9c4b44e55b6d132b66c2b0139/FLAG1e839f745 [2022-11-18 21:09:26,726 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:09:26,727 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b67ff6b-a7e6-4b38-be21-48dbe8d5cdcf/sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-2.c [2022-11-18 21:09:26,787 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b67ff6b-a7e6-4b38-be21-48dbe8d5cdcf/bin/uautomizer-TMbwUNV5ro/data/f8c2d17f2/7f172bf9c4b44e55b6d132b66c2b0139/FLAG1e839f745 [2022-11-18 21:09:27,187 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b67ff6b-a7e6-4b38-be21-48dbe8d5cdcf/bin/uautomizer-TMbwUNV5ro/data/f8c2d17f2/7f172bf9c4b44e55b6d132b66c2b0139 [2022-11-18 21:09:27,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:09:27,197 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:09:27,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:09:27,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:09:27,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:09:27,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:09:27" (1/1) ... [2022-11-18 21:09:27,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d38b211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:27, skipping insertion in model container [2022-11-18 21:09:27,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:09:27" (1/1) ... [2022-11-18 21:09:27,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:09:27,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:09:30,660 WARN L234 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_3b67ff6b-a7e6-4b38-be21-48dbe8d5cdcf/sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-2.c[378560,378573] [2022-11-18 21:09:30,708 WARN L234 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_3b67ff6b-a7e6-4b38-be21-48dbe8d5cdcf/sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-2.c[383339,383352] [2022-11-18 21:09:31,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:09:31,306 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:09:33,160 WARN L234 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_3b67ff6b-a7e6-4b38-be21-48dbe8d5cdcf/sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-2.c[378560,378573] [2022-11-18 21:09:33,177 WARN L234 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_3b67ff6b-a7e6-4b38-be21-48dbe8d5cdcf/sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-2.c[383339,383352] [2022-11-18 21:09:33,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:09:33,403 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:09:33,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:33 WrapperNode [2022-11-18 21:09:33,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:09:33,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:09:33,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:09:33,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:09:33,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:33" (1/1) ... [2022-11-18 21:09:33,553 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:33" (1/1) ... [2022-11-18 21:09:34,239 INFO L138 Inliner]: procedures = 68, calls = 77, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 13199 [2022-11-18 21:09:34,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:09:34,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:09:34,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:09:34,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:09:34,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:33" (1/1) ... [2022-11-18 21:09:34,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:33" (1/1) ... [2022-11-18 21:09:34,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:33" (1/1) ... [2022-11-18 21:09:34,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:33" (1/1) ... [2022-11-18 21:09:35,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:33" (1/1) ... [2022-11-18 21:09:35,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:33" (1/1) ... [2022-11-18 21:09:35,215 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:33" (1/1) ... [2022-11-18 21:09:35,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:33" (1/1) ... [2022-11-18 21:09:35,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:09:35,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:09:35,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:09:35,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:09:35,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:33" (1/1) ... [2022-11-18 21:09:35,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:09:35,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b67ff6b-a7e6-4b38-be21-48dbe8d5cdcf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:35,609 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b67ff6b-a7e6-4b38-be21-48dbe8d5cdcf/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:09:35,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b67ff6b-a7e6-4b38-be21-48dbe8d5cdcf/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:09:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:09:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-18 21:09:35,699 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-18 21:09:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-18 21:09:35,699 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-18 21:09:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-18 21:09:35,700 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-18 21:09:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-18 21:09:35,701 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-18 21:09:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-18 21:09:35,701 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-18 21:09:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-18 21:09:35,702 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-18 21:09:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:09:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:09:35,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:09:35,998 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:09:36,018 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:09:51,057 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:09:51,139 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:09:51,141 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-18 21:09:51,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:09:51 BoogieIcfgContainer [2022-11-18 21:09:51,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:09:51,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:09:51,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:09:51,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:09:51,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:09:27" (1/3) ... [2022-11-18 21:09:51,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140fd39a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:09:51, skipping insertion in model container [2022-11-18 21:09:51,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:33" (2/3) ... [2022-11-18 21:09:51,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140fd39a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:09:51, skipping insertion in model container [2022-11-18 21:09:51,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:09:51" (3/3) ... [2022-11-18 21:09:51,216 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.12.cil-2.c [2022-11-18 21:09:51,251 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:09:51,252 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 21:09:51,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:09:51,468 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;@32528e22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:09:51,469 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 21:09:51,487 INFO L276 IsEmpty]: Start isEmpty. Operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-18 21:09:51,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 21:09:51,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:09:51,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:51,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:09:51,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:51,546 INFO L85 PathProgramCache]: Analyzing trace with hash 10619845, now seen corresponding path program 1 times [2022-11-18 21:09:51,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:51,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956777321] [2022-11-18 21:09:51,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:51,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:52,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 21:09:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:52,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 21:09:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:52,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 21:09:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:52,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 21:09:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:52,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 21:09:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:52,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:52,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:52,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956777321] [2022-11-18 21:09:52,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956777321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:52,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:52,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:09:52,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114545541] [2022-11-18 21:09:52,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:52,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:09:52,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:52,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:09:52,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:09:52,800 INFO L87 Difference]: Start difference. First operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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) [2022-11-18 21:09:57,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:09:57,434 INFO L93 Difference]: Finished difference Result 5266 states and 9664 transitions. [2022-11-18 21:09:57,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:09:57,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-11-18 21:09:57,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:09:57,484 INFO L225 Difference]: With dead ends: 5266 [2022-11-18 21:09:57,485 INFO L226 Difference]: Without dead ends: 2640 [2022-11-18 21:09:57,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:09:57,505 INFO L413 NwaCegarLoop]: 4370 mSDtfsCounter, 1038 mSDsluCounter, 12465 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 16835 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:09:57,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 16835 Invalid, 1092 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [56 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-18 21:09:57,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2022-11-18 21:09:57,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2022-11-18 21:09:57,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8262987012987013) internal successors, (4500), 2466 states have internal predecessors, (4500), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-18 21:09:57,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4552 transitions. [2022-11-18 21:09:57,741 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4552 transitions. Word has length 178 [2022-11-18 21:09:57,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:09:57,742 INFO L495 AbstractCegarLoop]: Abstraction has 2498 states and 4552 transitions. [2022-11-18 21:09:57,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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) [2022-11-18 21:09:57,744 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4552 transitions. [2022-11-18 21:09:57,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 21:09:57,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:09:57,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:57,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:09:57,753 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:09:57,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:57,755 INFO L85 PathProgramCache]: Analyzing trace with hash -79440445, now seen corresponding path program 1 times [2022-11-18 21:09:57,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:57,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208086365] [2022-11-18 21:09:57,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:57,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:57,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 21:09:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:58,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 21:09:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:58,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 21:09:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:58,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 21:09:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:58,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 21:09:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:58,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:58,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:58,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208086365] [2022-11-18 21:09:58,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208086365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:58,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:58,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:09:58,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501462841] [2022-11-18 21:09:58,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:58,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:09:58,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:58,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:09:58,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:09:58,246 INFO L87 Difference]: Start difference. First operand 2498 states and 4552 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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) [2022-11-18 21:10:01,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:10:01,867 INFO L93 Difference]: Finished difference Result 3002 states and 5366 transitions. [2022-11-18 21:10:01,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:10:01,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-11-18 21:10:01,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:10:01,899 INFO L225 Difference]: With dead ends: 3002 [2022-11-18 21:10:01,900 INFO L226 Difference]: Without dead ends: 2640 [2022-11-18 21:10:01,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:10:01,908 INFO L413 NwaCegarLoop]: 4300 mSDtfsCounter, 1024 mSDsluCounter, 12262 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 16562 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 21:10:01,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 16562 Invalid, 1091 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-18 21:10:01,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2022-11-18 21:10:02,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2022-11-18 21:10:02,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8258928571428572) internal successors, (4499), 2466 states have internal predecessors, (4499), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-18 21:10:02,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4551 transitions. [2022-11-18 21:10:02,076 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4551 transitions. Word has length 178 [2022-11-18 21:10:02,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:10:02,079 INFO L495 AbstractCegarLoop]: Abstraction has 2498 states and 4551 transitions. [2022-11-18 21:10:02,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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) [2022-11-18 21:10:02,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4551 transitions. [2022-11-18 21:10:02,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 21:10:02,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:10:02,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:02,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 21:10:02,098 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:10:02,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:02,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1483309631, now seen corresponding path program 1 times [2022-11-18 21:10:02,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:02,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028655522] [2022-11-18 21:10:02,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:02,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:02,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 21:10:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:02,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 21:10:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:02,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 21:10:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:02,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 21:10:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:02,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 21:10:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:02,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:02,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:02,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028655522] [2022-11-18 21:10:02,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028655522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:02,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:02,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 21:10:02,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175624924] [2022-11-18 21:10:02,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:02,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:10:02,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:02,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:10:02,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:10:02,698 INFO L87 Difference]: Start difference. First operand 2498 states and 4551 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (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) [2022-11-18 21:10:10,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:10:10,171 INFO L93 Difference]: Finished difference Result 3514 states and 6198 transitions. [2022-11-18 21:10:10,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:10:10,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-11-18 21:10:10,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:10:10,207 INFO L225 Difference]: With dead ends: 3514 [2022-11-18 21:10:10,207 INFO L226 Difference]: Without dead ends: 3157 [2022-11-18 21:10:10,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-18 21:10:10,213 INFO L413 NwaCegarLoop]: 4305 mSDtfsCounter, 5517 mSDsluCounter, 12816 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5536 SdHoareTripleChecker+Valid, 17121 SdHoareTripleChecker+Invalid, 2482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:10:10,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5536 Valid, 17121 Invalid, 2482 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [108 Valid, 2374 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-18 21:10:10,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2022-11-18 21:10:10,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 2874. [2022-11-18 21:10:10,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2812 states have (on average 1.7976529160739687) internal successors, (5055), 2815 states have internal predecessors, (5055), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-11-18 21:10:10,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 5152 transitions. [2022-11-18 21:10:10,562 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 5152 transitions. Word has length 178 [2022-11-18 21:10:10,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:10:10,563 INFO L495 AbstractCegarLoop]: Abstraction has 2874 states and 5152 transitions. [2022-11-18 21:10:10,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (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) [2022-11-18 21:10:10,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 5152 transitions. [2022-11-18 21:10:10,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 21:10:10,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:10:10,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:10,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 21:10:10,571 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:10:10,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:10,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1935672389, now seen corresponding path program 1 times [2022-11-18 21:10:10,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:10,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724601237] [2022-11-18 21:10:10,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:10,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:10,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 21:10:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:11,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 21:10:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:11,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 21:10:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:11,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 21:10:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:11,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 21:10:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:11,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:11,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:11,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724601237] [2022-11-18 21:10:11,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724601237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:11,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:11,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:10:11,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309587416] [2022-11-18 21:10:11,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:11,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:10:11,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:11,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:10:11,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:10:11,343 INFO L87 Difference]: Start difference. First operand 2874 states and 5152 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-11-18 21:10:20,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:10:20,190 INFO L93 Difference]: Finished difference Result 4427 states and 7672 transitions. [2022-11-18 21:10:20,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:10:20,191 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-11-18 21:10:20,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:10:20,213 INFO L225 Difference]: With dead ends: 4427 [2022-11-18 21:10:20,214 INFO L226 Difference]: Without dead ends: 3694 [2022-11-18 21:10:20,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:10:20,221 INFO L413 NwaCegarLoop]: 4508 mSDtfsCounter, 5552 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3582 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5571 SdHoareTripleChecker+Valid, 22209 SdHoareTripleChecker+Invalid, 3645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-18 21:10:20,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5571 Valid, 22209 Invalid, 3645 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [63 Valid, 3582 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-18 21:10:20,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states. [2022-11-18 21:10:20,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 3223. [2022-11-18 21:10:20,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 3133 states have (on average 1.7736993297159271) internal successors, (5557), 3137 states have internal predecessors, (5557), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2022-11-18 21:10:20,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 5698 transitions. [2022-11-18 21:10:20,573 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 5698 transitions. Word has length 178 [2022-11-18 21:10:20,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:10:20,574 INFO L495 AbstractCegarLoop]: Abstraction has 3223 states and 5698 transitions. [2022-11-18 21:10:20,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-11-18 21:10:20,583 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 5698 transitions. [2022-11-18 21:10:20,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 21:10:20,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:10:20,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:20,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 21:10:20,592 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:10:20,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:20,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1324403331, now seen corresponding path program 1 times [2022-11-18 21:10:20,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:20,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559335636] [2022-11-18 21:10:20,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:20,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:20,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 21:10:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:20,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 21:10:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:21,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 21:10:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:21,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 21:10:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:21,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 21:10:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:21,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:21,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:21,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559335636] [2022-11-18 21:10:21,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559335636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:21,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:21,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:10:21,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989211138] [2022-11-18 21:10:21,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:21,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:10:21,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:21,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:10:21,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:10:21,165 INFO L87 Difference]: Start difference. First operand 3223 states and 5698 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-11-18 21:10:29,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:10:29,160 INFO L93 Difference]: Finished difference Result 5773 states and 9826 transitions. [2022-11-18 21:10:29,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:10:29,161 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-11-18 21:10:29,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:10:29,195 INFO L225 Difference]: With dead ends: 5773 [2022-11-18 21:10:29,195 INFO L226 Difference]: Without dead ends: 4691 [2022-11-18 21:10:29,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:10:29,206 INFO L413 NwaCegarLoop]: 4310 mSDtfsCounter, 5664 mSDsluCounter, 17063 mSDsCounter, 0 mSdLazyCounter, 3177 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5683 SdHoareTripleChecker+Valid, 21373 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:10:29,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5683 Valid, 21373 Invalid, 3276 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [99 Valid, 3177 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-18 21:10:29,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4691 states. [2022-11-18 21:10:29,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4691 to 3922. [2022-11-18 21:10:29,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3922 states, 3776 states have (on average 1.7378177966101696) internal successors, (6562), 3782 states have internal predecessors, (6562), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-11-18 21:10:29,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3922 states to 3922 states and 6795 transitions. [2022-11-18 21:10:29,748 INFO L78 Accepts]: Start accepts. Automaton has 3922 states and 6795 transitions. Word has length 178 [2022-11-18 21:10:29,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:10:29,749 INFO L495 AbstractCegarLoop]: Abstraction has 3922 states and 6795 transitions. [2022-11-18 21:10:29,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-11-18 21:10:29,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3922 states and 6795 transitions. [2022-11-18 21:10:29,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 21:10:29,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:10:29,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:29,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 21:10:29,772 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:10:29,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:29,774 INFO L85 PathProgramCache]: Analyzing trace with hash -80788347, now seen corresponding path program 1 times [2022-11-18 21:10:29,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:29,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710413870] [2022-11-18 21:10:29,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:29,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:30,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 21:10:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:30,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 21:10:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:30,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 21:10:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:30,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 21:10:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:30,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 21:10:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:30,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:30,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:30,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710413870] [2022-11-18 21:10:30,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710413870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:30,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:30,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:10:30,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401535781] [2022-11-18 21:10:30,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:30,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:10:30,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:30,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:10:30,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:10:30,322 INFO L87 Difference]: Start difference. First operand 3922 states and 6795 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-11-18 21:10:40,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:10:40,490 INFO L93 Difference]: Finished difference Result 8360 states and 13939 transitions. [2022-11-18 21:10:40,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:10:40,492 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-11-18 21:10:40,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:10:40,546 INFO L225 Difference]: With dead ends: 8360 [2022-11-18 21:10:40,546 INFO L226 Difference]: Without dead ends: 6579 [2022-11-18 21:10:40,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:10:40,561 INFO L413 NwaCegarLoop]: 4506 mSDtfsCounter, 5550 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3571 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5569 SdHoareTripleChecker+Valid, 22207 SdHoareTripleChecker+Invalid, 3636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:10:40,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5569 Valid, 22207 Invalid, 3636 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [65 Valid, 3571 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-11-18 21:10:40,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6579 states. [2022-11-18 21:10:41,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6579 to 5321. [2022-11-18 21:10:41,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5321 states, 5063 states have (on average 1.693067351372704) internal successors, (8572), 5073 states have internal predecessors, (8572), 194 states have call successors, (194), 54 states have call predecessors, (194), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2022-11-18 21:10:41,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5321 states to 5321 states and 8995 transitions. [2022-11-18 21:10:41,587 INFO L78 Accepts]: Start accepts. Automaton has 5321 states and 8995 transitions. Word has length 178 [2022-11-18 21:10:41,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:10:41,588 INFO L495 AbstractCegarLoop]: Abstraction has 5321 states and 8995 transitions. [2022-11-18 21:10:41,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-11-18 21:10:41,589 INFO L276 IsEmpty]: Start isEmpty. Operand 5321 states and 8995 transitions. [2022-11-18 21:10:41,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 21:10:41,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:10:41,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:41,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 21:10:41,598 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:10:41,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:41,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1813545539, now seen corresponding path program 1 times [2022-11-18 21:10:41,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:41,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817127940] [2022-11-18 21:10:41,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:41,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:41,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 21:10:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:41,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 21:10:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:42,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 21:10:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:42,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 21:10:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:42,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 21:10:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:42,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:42,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:42,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817127940] [2022-11-18 21:10:42,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817127940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:42,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:42,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:10:42,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776325464] [2022-11-18 21:10:42,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:42,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:10:42,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:42,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:10:42,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:10:42,225 INFO L87 Difference]: Start difference. First operand 5321 states and 8995 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-11-18 21:10:54,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:10:54,120 INFO L93 Difference]: Finished difference Result 13526 states and 22169 transitions. [2022-11-18 21:10:54,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:10:54,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-11-18 21:10:54,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:10:54,189 INFO L225 Difference]: With dead ends: 13526 [2022-11-18 21:10:54,189 INFO L226 Difference]: Without dead ends: 10346 [2022-11-18 21:10:54,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:10:54,212 INFO L413 NwaCegarLoop]: 4506 mSDtfsCounter, 5546 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3543 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5565 SdHoareTripleChecker+Valid, 22207 SdHoareTripleChecker+Invalid, 3608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-18 21:10:54,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5565 Valid, 22207 Invalid, 3608 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [65 Valid, 3543 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-18 21:10:54,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10346 states. [2022-11-18 21:10:56,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10346 to 8133. [2022-11-18 21:10:56,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8133 states, 7651 states have (on average 1.6489347797673506) internal successors, (12616), 7669 states have internal predecessors, (12616), 362 states have call successors, (362), 102 states have call predecessors, (362), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-11-18 21:10:56,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8133 states to 8133 states and 13437 transitions. [2022-11-18 21:10:56,338 INFO L78 Accepts]: Start accepts. Automaton has 8133 states and 13437 transitions. Word has length 178 [2022-11-18 21:10:56,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:10:56,339 INFO L495 AbstractCegarLoop]: Abstraction has 8133 states and 13437 transitions. [2022-11-18 21:10:56,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-11-18 21:10:56,341 INFO L276 IsEmpty]: Start isEmpty. Operand 8133 states and 13437 transitions. [2022-11-18 21:10:56,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 21:10:56,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:10:56,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:56,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 21:10:56,354 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:10:56,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:56,355 INFO L85 PathProgramCache]: Analyzing trace with hash 890378113, now seen corresponding path program 1 times [2022-11-18 21:10:56,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:56,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638477104] [2022-11-18 21:10:56,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:56,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:56,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 21:10:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:56,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 21:10:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:56,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 21:10:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:56,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 21:10:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:56,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 21:10:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:56,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:56,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:56,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638477104] [2022-11-18 21:10:56,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638477104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:56,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:56,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:10:56,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705458416] [2022-11-18 21:10:56,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:56,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:10:56,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:56,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:10:56,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:10:56,797 INFO L87 Difference]: Start difference. First operand 8133 states and 13437 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-11-18 21:11:08,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:11:08,392 INFO L93 Difference]: Finished difference Result 23876 states and 38721 transitions. [2022-11-18 21:11:08,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:11:08,393 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-11-18 21:11:08,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:11:08,539 INFO L225 Difference]: With dead ends: 23876 [2022-11-18 21:11:08,540 INFO L226 Difference]: Without dead ends: 17884 [2022-11-18 21:11:08,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:11:08,587 INFO L413 NwaCegarLoop]: 4506 mSDtfsCounter, 5545 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3530 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5564 SdHoareTripleChecker+Valid, 22207 SdHoareTripleChecker+Invalid, 3595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:11:08,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5564 Valid, 22207 Invalid, 3595 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 3530 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-18 21:11:08,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17884 states. [2022-11-18 21:11:11,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17884 to 13770. [2022-11-18 21:11:11,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13770 states, 12840 states have (on average 1.6138629283489097) internal successors, (20722), 12874 states have internal predecessors, (20722), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-11-18 21:11:11,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13770 states to 13770 states and 22393 transitions. [2022-11-18 21:11:11,107 INFO L78 Accepts]: Start accepts. Automaton has 13770 states and 22393 transitions. Word has length 178 [2022-11-18 21:11:11,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:11:11,108 INFO L495 AbstractCegarLoop]: Abstraction has 13770 states and 22393 transitions. [2022-11-18 21:11:11,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-11-18 21:11:11,108 INFO L276 IsEmpty]: Start isEmpty. Operand 13770 states and 22393 transitions. [2022-11-18 21:11:11,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 21:11:11,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:11:11,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:11:11,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 21:11:11,120 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:11:11,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:11:11,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1276240515, now seen corresponding path program 1 times [2022-11-18 21:11:11,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:11:11,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422661022] [2022-11-18 21:11:11,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:11:11,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:11:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:11,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 21:11:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:11,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 21:11:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:11,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 21:11:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:11,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 21:11:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:11,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 21:11:11,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:11,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:11:11,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:11:11,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422661022] [2022-11-18 21:11:11,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422661022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:11:11,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:11:11,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:11:11,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712896738] [2022-11-18 21:11:11,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:11:11,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:11:11,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:11:11,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:11:11,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:11:11,708 INFO L87 Difference]: Start difference. First operand 13770 states and 22393 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-11-18 21:11:21,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:11:21,848 INFO L93 Difference]: Finished difference Result 29766 states and 48386 transitions. [2022-11-18 21:11:21,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:11:21,852 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-11-18 21:11:21,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:11:21,971 INFO L225 Difference]: With dead ends: 29766 [2022-11-18 21:11:21,971 INFO L226 Difference]: Without dead ends: 18137 [2022-11-18 21:11:22,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 21:11:22,061 INFO L413 NwaCegarLoop]: 4255 mSDtfsCounter, 5098 mSDsluCounter, 16760 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5118 SdHoareTripleChecker+Valid, 21015 SdHoareTripleChecker+Invalid, 1875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:11:22,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5118 Valid, 21015 Invalid, 1875 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-18 21:11:22,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18137 states. [2022-11-18 21:11:26,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18137 to 13770. [2022-11-18 21:11:26,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13770 states, 12840 states have (on average 1.6112928348909656) internal successors, (20689), 12874 states have internal predecessors, (20689), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-11-18 21:11:26,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13770 states to 13770 states and 22360 transitions. [2022-11-18 21:11:26,140 INFO L78 Accepts]: Start accepts. Automaton has 13770 states and 22360 transitions. Word has length 178 [2022-11-18 21:11:26,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:11:26,141 INFO L495 AbstractCegarLoop]: Abstraction has 13770 states and 22360 transitions. [2022-11-18 21:11:26,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-11-18 21:11:26,142 INFO L276 IsEmpty]: Start isEmpty. Operand 13770 states and 22360 transitions. [2022-11-18 21:11:26,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 21:11:26,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:11:26,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:11:26,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 21:11:26,161 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:11:26,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:11:26,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1011593025, now seen corresponding path program 1 times [2022-11-18 21:11:26,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:11:26,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781371235] [2022-11-18 21:11:26,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:11:26,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:11:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:26,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 21:11:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:26,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 21:11:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:26,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 21:11:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:26,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 21:11:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:26,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 21:11:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:26,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:11:26,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:11:26,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781371235] [2022-11-18 21:11:26,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781371235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:11:26,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:11:26,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:11:26,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064583205] [2022-11-18 21:11:26,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:11:26,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:11:26,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:11:26,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:11:26,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:11:26,739 INFO L87 Difference]: Start difference. First operand 13770 states and 22360 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-11-18 21:11:45,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:11:45,876 INFO L93 Difference]: Finished difference Result 44541 states and 71783 transitions. [2022-11-18 21:11:45,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:11:45,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-11-18 21:11:45,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:11:46,219 INFO L225 Difference]: With dead ends: 44541 [2022-11-18 21:11:46,220 INFO L226 Difference]: Without dead ends: 32912 [2022-11-18 21:11:46,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:11:46,276 INFO L413 NwaCegarLoop]: 4506 mSDtfsCounter, 5537 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3492 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5556 SdHoareTripleChecker+Valid, 22207 SdHoareTripleChecker+Invalid, 3557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-18 21:11:46,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5556 Valid, 22207 Invalid, 3557 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [65 Valid, 3492 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-18 21:11:46,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32912 states. [2022-11-18 21:11:51,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32912 to 25108. [2022-11-18 21:11:51,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25108 states, 23282 states have (on average 1.587020015462589) internal successors, (36949), 23348 states have internal predecessors, (36949), 1370 states have call successors, (1370), 390 states have call predecessors, (1370), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2022-11-18 21:11:51,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25108 states to 25108 states and 40482 transitions. [2022-11-18 21:11:51,897 INFO L78 Accepts]: Start accepts. Automaton has 25108 states and 40482 transitions. Word has length 178 [2022-11-18 21:11:51,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:11:51,898 INFO L495 AbstractCegarLoop]: Abstraction has 25108 states and 40482 transitions. [2022-11-18 21:11:51,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-11-18 21:11:51,898 INFO L276 IsEmpty]: Start isEmpty. Operand 25108 states and 40482 transitions. [2022-11-18 21:11:51,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 21:11:51,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:11:51,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:11:51,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 21:11:51,923 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:11:51,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:11:51,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1352248637, now seen corresponding path program 1 times [2022-11-18 21:11:51,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:11:51,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125512056] [2022-11-18 21:11:51,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:11:51,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:11:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:52,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 21:11:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:52,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 21:11:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:52,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 21:11:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:52,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 21:11:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:52,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 21:11:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:52,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:11:52,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:11:52,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125512056] [2022-11-18 21:11:52,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125512056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:11:52,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:11:52,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:11:52,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019232228] [2022-11-18 21:11:52,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:11:52,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:11:52,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:11:52,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:11:52,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:11:52,387 INFO L87 Difference]: Start difference. First operand 25108 states and 40482 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2022-11-18 21:12:19,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:12:19,766 INFO L93 Difference]: Finished difference Result 85941 states and 138783 transitions. [2022-11-18 21:12:19,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:12:19,767 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-11-18 21:12:19,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:12:20,440 INFO L225 Difference]: With dead ends: 85941 [2022-11-18 21:12:20,440 INFO L226 Difference]: Without dead ends: 62974 [2022-11-18 21:12:20,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:12:20,565 INFO L413 NwaCegarLoop]: 4506 mSDtfsCounter, 5536 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3479 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5555 SdHoareTripleChecker+Valid, 22207 SdHoareTripleChecker+Invalid, 3544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:12:20,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5555 Valid, 22207 Invalid, 3544 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 3479 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-18 21:12:20,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62974 states.