./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label44.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label44.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4590079a5f8946ec9488ef76281079c2cb860e2f88ad1b21eefdd23ad59a57f9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 11:12:06,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:12:06,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:12:06,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:12:06,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:12:06,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:12:06,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:12:06,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:12:06,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:12:06,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:12:06,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:12:06,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:12:06,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:12:06,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:12:06,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:12:06,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:12:06,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:12:06,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:12:06,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:12:06,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:12:06,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:12:06,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:12:06,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:12:06,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:12:06,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:12:06,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:12:06,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:12:06,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:12:06,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:12:06,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:12:06,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:12:06,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:12:06,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:12:06,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:12:06,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:12:06,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:12:06,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:12:06,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:12:06,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:12:06,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:12:06,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:12:06,494 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 11:12:06,516 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:12:06,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:12:06,517 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:12:06,517 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:12:06,518 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:12:06,518 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:12:06,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:12:06,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:12:06,519 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:12:06,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:12:06,520 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:12:06,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:12:06,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:12:06,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:12:06,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:12:06,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:12:06,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:12:06,521 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:12:06,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:12:06,521 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:12:06,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:12:06,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:12:06,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:12:06,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:12:06,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:12:06,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:12:06,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:12:06,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:12:06,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:12:06,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:12:06,522 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:12:06,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:12:06,522 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:12:06,532 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:12:06,532 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:12:06,532 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4590079a5f8946ec9488ef76281079c2cb860e2f88ad1b21eefdd23ad59a57f9 [2022-12-13 11:12:06,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:12:06,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:12:06,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:12:06,717 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:12:06,717 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:12:06,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/eca-rers2012/Problem12_label44.c [2022-12-13 11:12:09,321 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:12:09,599 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:12:09,600 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/sv-benchmarks/c/eca-rers2012/Problem12_label44.c [2022-12-13 11:12:09,618 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8/data/05d2f21a2/9b8b7ce9738941ea87a184f8ea5f1a35/FLAG11420175d [2022-12-13 11:12:09,904 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8/data/05d2f21a2/9b8b7ce9738941ea87a184f8ea5f1a35 [2022-12-13 11:12:09,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:12:09,910 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:12:09,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:12:09,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:12:09,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:12:09,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:12:09" (1/1) ... [2022-12-13 11:12:09,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3beb51c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:12:09, skipping insertion in model container [2022-12-13 11:12:09,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:12:09" (1/1) ... [2022-12-13 11:12:09,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:12:10,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:12:10,184 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/sv-benchmarks/c/eca-rers2012/Problem12_label44.c[6250,6263] [2022-12-13 11:12:10,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:12:10,821 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:12:10,839 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/sv-benchmarks/c/eca-rers2012/Problem12_label44.c[6250,6263] [2022-12-13 11:12:11,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:12:11,227 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:12:11,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:12:11 WrapperNode [2022-12-13 11:12:11,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:12:11,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:12:11,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:12:11,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:12:11,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:12:11" (1/1) ... [2022-12-13 11:12:11,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:12:11" (1/1) ... [2022-12-13 11:12:11,489 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-12-13 11:12:11,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:12:11,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:12:11,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:12:11,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:12:11,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:12:11" (1/1) ... [2022-12-13 11:12:11,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:12:11" (1/1) ... [2022-12-13 11:12:11,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:12:11" (1/1) ... [2022-12-13 11:12:11,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:12:11" (1/1) ... [2022-12-13 11:12:11,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:12:11" (1/1) ... [2022-12-13 11:12:11,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:12:11" (1/1) ... [2022-12-13 11:12:11,718 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:12:11" (1/1) ... [2022-12-13 11:12:11,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:12:11" (1/1) ... [2022-12-13 11:12:11,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:12:11,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:12:11,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:12:11,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:12:11,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:12:11" (1/1) ... [2022-12-13 11:12:11,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:12:11,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:12:11,832 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:12:11,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:12:11,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:12:11,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:12:11,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:12:11,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:12:11,930 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:12:11,931 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:12:15,393 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:12:15,411 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:12:15,411 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 11:12:15,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:12:15 BoogieIcfgContainer [2022-12-13 11:12:15,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:12:15,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:12:15,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:12:15,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:12:15,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:12:09" (1/3) ... [2022-12-13 11:12:15,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e28abd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:12:15, skipping insertion in model container [2022-12-13 11:12:15,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:12:11" (2/3) ... [2022-12-13 11:12:15,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e28abd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:12:15, skipping insertion in model container [2022-12-13 11:12:15,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:12:15" (3/3) ... [2022-12-13 11:12:15,424 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label44.c [2022-12-13 11:12:15,443 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:12:15,443 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 11:12:15,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:12:15,504 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;@42da18c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:12:15,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 11:12:15,510 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:15,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-13 11:12:15,516 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:12:15,517 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] [2022-12-13 11:12:15,517 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:12:15,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:12:15,521 INFO L85 PathProgramCache]: Analyzing trace with hash 761214138, now seen corresponding path program 1 times [2022-12-13 11:12:15,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:12:15,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455350956] [2022-12-13 11:12:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:15,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:12:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:15,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:12:15,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:12:15,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455350956] [2022-12-13 11:12:15,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455350956] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:12:15,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:12:15,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:12:15,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564036398] [2022-12-13 11:12:15,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:12:15,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:12:15,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:12:15,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:12:15,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:12:15,781 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:18,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:12:18,949 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2022-12-13 11:12:18,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:12:18,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-12-13 11:12:18,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:12:18,967 INFO L225 Difference]: With dead ends: 2388 [2022-12-13 11:12:18,967 INFO L226 Difference]: Without dead ends: 1506 [2022-12-13 11:12:18,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:12:18,973 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 784 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:12:18,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 481 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 11:12:18,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-12-13 11:12:19,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-12-13 11:12:19,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.6385382059800664) internal successors, (2466), 1505 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:19,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2466 transitions. [2022-12-13 11:12:19,040 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2466 transitions. Word has length 50 [2022-12-13 11:12:19,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:12:19,041 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2466 transitions. [2022-12-13 11:12:19,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:19,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2466 transitions. [2022-12-13 11:12:19,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-13 11:12:19,043 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:12:19,043 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:12:19,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:12:19,043 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:12:19,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:12:19,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1850963095, now seen corresponding path program 1 times [2022-12-13 11:12:19,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:12:19,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077071656] [2022-12-13 11:12:19,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:19,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:12:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:19,304 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:12:19,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:12:19,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077071656] [2022-12-13 11:12:19,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077071656] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:12:19,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:12:19,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:12:19,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110339721] [2022-12-13 11:12:19,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:12:19,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:12:19,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:12:19,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:12:19,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:12:19,309 INFO L87 Difference]: Start difference. First operand 1506 states and 2466 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:23,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:12:23,449 INFO L93 Difference]: Finished difference Result 4549 states and 7430 transitions. [2022-12-13 11:12:23,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:12:23,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2022-12-13 11:12:23,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:12:23,455 INFO L225 Difference]: With dead ends: 4549 [2022-12-13 11:12:23,455 INFO L226 Difference]: Without dead ends: 3008 [2022-12-13 11:12:23,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:12:23,457 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 688 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3732 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 4396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:12:23,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 656 Invalid, 4396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3732 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-12-13 11:12:23,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2022-12-13 11:12:23,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2022-12-13 11:12:23,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.341536415031593) internal successors, (4034), 3007 states have internal predecessors, (4034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:23,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4034 transitions. [2022-12-13 11:12:23,496 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4034 transitions. Word has length 121 [2022-12-13 11:12:23,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:12:23,496 INFO L495 AbstractCegarLoop]: Abstraction has 3008 states and 4034 transitions. [2022-12-13 11:12:23,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:23,497 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4034 transitions. [2022-12-13 11:12:23,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-13 11:12:23,500 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:12:23,500 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:12:23,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:12:23,500 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:12:23,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:12:23,501 INFO L85 PathProgramCache]: Analyzing trace with hash -938273718, now seen corresponding path program 1 times [2022-12-13 11:12:23,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:12:23,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356060513] [2022-12-13 11:12:23,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:23,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:12:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:23,742 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:12:23,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:12:23,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356060513] [2022-12-13 11:12:23,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356060513] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:12:23,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:12:23,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:12:23,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783107458] [2022-12-13 11:12:23,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:12:23,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:12:23,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:12:23,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:12:23,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:12:23,745 INFO L87 Difference]: Start difference. First operand 3008 states and 4034 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:27,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:12:27,670 INFO L93 Difference]: Finished difference Result 9769 states and 12892 transitions. [2022-12-13 11:12:27,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:12:27,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2022-12-13 11:12:27,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:12:27,683 INFO L225 Difference]: With dead ends: 9769 [2022-12-13 11:12:27,683 INFO L226 Difference]: Without dead ends: 6763 [2022-12-13 11:12:27,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:12:27,686 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 2093 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4273 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2093 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 4840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 4273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:12:27,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2093 Valid, 452 Invalid, 4840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 4273 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-12-13 11:12:27,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2022-12-13 11:12:27,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6763. [2022-12-13 11:12:27,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.287341023365868) internal successors, (8705), 6762 states have internal predecessors, (8705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:27,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 8705 transitions. [2022-12-13 11:12:27,773 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 8705 transitions. Word has length 159 [2022-12-13 11:12:27,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:12:27,774 INFO L495 AbstractCegarLoop]: Abstraction has 6763 states and 8705 transitions. [2022-12-13 11:12:27,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:27,774 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 8705 transitions. [2022-12-13 11:12:27,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-12-13 11:12:27,777 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:12:27,777 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:12:27,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:12:27,778 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:12:27,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:12:27,778 INFO L85 PathProgramCache]: Analyzing trace with hash -341145559, now seen corresponding path program 1 times [2022-12-13 11:12:27,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:12:27,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367360427] [2022-12-13 11:12:27,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:27,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:12:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:28,106 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-13 11:12:28,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:12:28,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367360427] [2022-12-13 11:12:28,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367360427] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:12:28,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:12:28,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:12:28,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631503404] [2022-12-13 11:12:28,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:12:28,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:12:28,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:12:28,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:12:28,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:12:28,108 INFO L87 Difference]: Start difference. First operand 6763 states and 8705 transitions. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:31,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:12:31,275 INFO L93 Difference]: Finished difference Result 15816 states and 21393 transitions. [2022-12-13 11:12:31,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:12:31,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 262 [2022-12-13 11:12:31,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:12:31,290 INFO L225 Difference]: With dead ends: 15816 [2022-12-13 11:12:31,290 INFO L226 Difference]: Without dead ends: 9769 [2022-12-13 11:12:31,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:12:31,295 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 775 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3909 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 4451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 3909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:12:31,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 492 Invalid, 4451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 3909 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-13 11:12:31,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9769 states. [2022-12-13 11:12:31,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9769 to 9767. [2022-12-13 11:12:31,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.272987917263977) internal successors, (12432), 9766 states have internal predecessors, (12432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:31,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 12432 transitions. [2022-12-13 11:12:31,403 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 12432 transitions. Word has length 262 [2022-12-13 11:12:31,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:12:31,404 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 12432 transitions. [2022-12-13 11:12:31,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:31,404 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 12432 transitions. [2022-12-13 11:12:31,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-12-13 11:12:31,407 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:12:31,407 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:12:31,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:12:31,407 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:12:31,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:12:31,408 INFO L85 PathProgramCache]: Analyzing trace with hash -533867888, now seen corresponding path program 1 times [2022-12-13 11:12:31,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:12:31,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699307197] [2022-12-13 11:12:31,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:31,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:12:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:31,837 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 41 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:12:31,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:12:31,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699307197] [2022-12-13 11:12:31,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699307197] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:12:31,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404658743] [2022-12-13 11:12:31,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:31,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:12:31,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:12:31,839 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:12:31,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:12:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:31,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 11:12:31,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:12:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-12-13 11:12:32,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:12:32,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404658743] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:12:32,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:12:32,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-12-13 11:12:32,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371666162] [2022-12-13 11:12:32,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:12:32,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:12:32,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:12:32,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:12:32,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:12:32,051 INFO L87 Difference]: Start difference. First operand 9767 states and 12432 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:34,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:12:34,585 INFO L93 Difference]: Finished difference Result 26291 states and 34151 transitions. [2022-12-13 11:12:34,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:12:34,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 280 [2022-12-13 11:12:34,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:12:34,613 INFO L225 Difference]: With dead ends: 26291 [2022-12-13 11:12:34,614 INFO L226 Difference]: Without dead ends: 17277 [2022-12-13 11:12:34,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:12:34,620 INFO L413 NwaCegarLoop]: 1087 mSDtfsCounter, 741 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 2902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:12:34,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1095 Invalid, 2902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [547 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 11:12:34,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17277 states. [2022-12-13 11:12:34,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17277 to 17277. [2022-12-13 11:12:34,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17277 states, 17276 states have (on average 1.260997916184302) internal successors, (21785), 17276 states have internal predecessors, (21785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:34,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17277 states to 17277 states and 21785 transitions. [2022-12-13 11:12:34,787 INFO L78 Accepts]: Start accepts. Automaton has 17277 states and 21785 transitions. Word has length 280 [2022-12-13 11:12:34,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:12:34,788 INFO L495 AbstractCegarLoop]: Abstraction has 17277 states and 21785 transitions. [2022-12-13 11:12:34,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:34,788 INFO L276 IsEmpty]: Start isEmpty. Operand 17277 states and 21785 transitions. [2022-12-13 11:12:34,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-12-13 11:12:34,791 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:12:34,791 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:12:34,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:12:34,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:12:34,992 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:12:34,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:12:34,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1850802994, now seen corresponding path program 1 times [2022-12-13 11:12:34,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:12:34,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084755958] [2022-12-13 11:12:34,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:34,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:12:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:35,138 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-12-13 11:12:35,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:12:35,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084755958] [2022-12-13 11:12:35,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084755958] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:12:35,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:12:35,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:12:35,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893507751] [2022-12-13 11:12:35,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:12:35,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:12:35,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:12:35,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:12:35,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:12:35,140 INFO L87 Difference]: Start difference. First operand 17277 states and 21785 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:37,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:12:37,719 INFO L93 Difference]: Finished difference Result 33801 states and 42812 transitions. [2022-12-13 11:12:37,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:12:37,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 284 [2022-12-13 11:12:37,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:12:37,738 INFO L225 Difference]: With dead ends: 33801 [2022-12-13 11:12:37,738 INFO L226 Difference]: Without dead ends: 17277 [2022-12-13 11:12:37,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:12:37,745 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 694 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1969 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 2672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 1969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 11:12:37,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 431 Invalid, 2672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 1969 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 11:12:37,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17277 states. [2022-12-13 11:12:37,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17277 to 15775. [2022-12-13 11:12:37,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15775 states, 15774 states have (on average 1.1705337897806518) internal successors, (18464), 15774 states have internal predecessors, (18464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:37,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15775 states to 15775 states and 18464 transitions. [2022-12-13 11:12:37,895 INFO L78 Accepts]: Start accepts. Automaton has 15775 states and 18464 transitions. Word has length 284 [2022-12-13 11:12:37,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:12:37,896 INFO L495 AbstractCegarLoop]: Abstraction has 15775 states and 18464 transitions. [2022-12-13 11:12:37,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:37,896 INFO L276 IsEmpty]: Start isEmpty. Operand 15775 states and 18464 transitions. [2022-12-13 11:12:37,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2022-12-13 11:12:37,901 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:12:37,901 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:12:37,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:12:37,902 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:12:37,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:12:37,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1446669815, now seen corresponding path program 1 times [2022-12-13 11:12:37,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:12:37,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391502336] [2022-12-13 11:12:37,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:37,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:12:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:38,294 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-12-13 11:12:38,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:12:38,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391502336] [2022-12-13 11:12:38,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391502336] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:12:38,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:12:38,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:12:38,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075164159] [2022-12-13 11:12:38,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:12:38,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:12:38,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:12:38,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:12:38,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:12:38,296 INFO L87 Difference]: Start difference. First operand 15775 states and 18464 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:40,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:12:40,584 INFO L93 Difference]: Finished difference Result 39058 states and 46323 transitions. [2022-12-13 11:12:40,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:12:40,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 363 [2022-12-13 11:12:40,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:12:40,604 INFO L225 Difference]: With dead ends: 39058 [2022-12-13 11:12:40,604 INFO L226 Difference]: Without dead ends: 24036 [2022-12-13 11:12:40,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:12:40,613 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 780 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 738 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 738 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:12:40,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 105 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [738 Valid, 2166 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 11:12:40,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24036 states. [2022-12-13 11:12:40,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24036 to 24036. [2022-12-13 11:12:40,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24036 states, 24035 states have (on average 1.1707093821510297) internal successors, (28138), 24035 states have internal predecessors, (28138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:40,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24036 states to 24036 states and 28138 transitions. [2022-12-13 11:12:40,801 INFO L78 Accepts]: Start accepts. Automaton has 24036 states and 28138 transitions. Word has length 363 [2022-12-13 11:12:40,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:12:40,802 INFO L495 AbstractCegarLoop]: Abstraction has 24036 states and 28138 transitions. [2022-12-13 11:12:40,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:40,802 INFO L276 IsEmpty]: Start isEmpty. Operand 24036 states and 28138 transitions. [2022-12-13 11:12:40,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2022-12-13 11:12:40,804 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:12:40,804 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:12:40,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 11:12:40,805 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:12:40,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:12:40,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1093901614, now seen corresponding path program 1 times [2022-12-13 11:12:40,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:12:40,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19503556] [2022-12-13 11:12:40,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:40,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:12:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:41,159 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-12-13 11:12:41,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:12:41,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19503556] [2022-12-13 11:12:41,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19503556] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:12:41,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:12:41,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:12:41,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372256721] [2022-12-13 11:12:41,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:12:41,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:12:41,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:12:41,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:12:41,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:12:41,161 INFO L87 Difference]: Start difference. First operand 24036 states and 28138 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:44,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:12:44,279 INFO L93 Difference]: Finished difference Result 64592 states and 76565 transitions. [2022-12-13 11:12:44,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:12:44,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 377 [2022-12-13 11:12:44,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:12:44,319 INFO L225 Difference]: With dead ends: 64592 [2022-12-13 11:12:44,319 INFO L226 Difference]: Without dead ends: 41309 [2022-12-13 11:12:44,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:12:44,352 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 678 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2268 mSolverCounterSat, 627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 2895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 2268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:12:44,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 526 Invalid, 2895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 2268 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-13 11:12:44,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41309 states. [2022-12-13 11:12:44,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41309 to 40558. [2022-12-13 11:12:44,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40558 states, 40557 states have (on average 1.154720516803511) internal successors, (46832), 40557 states have internal predecessors, (46832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:44,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40558 states to 40558 states and 46832 transitions. [2022-12-13 11:12:44,719 INFO L78 Accepts]: Start accepts. Automaton has 40558 states and 46832 transitions. Word has length 377 [2022-12-13 11:12:44,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:12:44,720 INFO L495 AbstractCegarLoop]: Abstraction has 40558 states and 46832 transitions. [2022-12-13 11:12:44,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:44,720 INFO L276 IsEmpty]: Start isEmpty. Operand 40558 states and 46832 transitions. [2022-12-13 11:12:44,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-12-13 11:12:44,723 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:12:44,723 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:12:44,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 11:12:44,723 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:12:44,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:12:44,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1052886306, now seen corresponding path program 1 times [2022-12-13 11:12:44,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:12:44,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100728908] [2022-12-13 11:12:44,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:44,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:12:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:45,250 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2022-12-13 11:12:45,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:12:45,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100728908] [2022-12-13 11:12:45,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100728908] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:12:45,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:12:45,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:12:45,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695776816] [2022-12-13 11:12:45,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:12:45,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:12:45,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:12:45,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:12:45,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:12:45,253 INFO L87 Difference]: Start difference. First operand 40558 states and 46832 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:47,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:12:47,749 INFO L93 Difference]: Finished difference Result 90126 states and 103765 transitions. [2022-12-13 11:12:47,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:12:47,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 409 [2022-12-13 11:12:47,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:12:47,799 INFO L225 Difference]: With dead ends: 90126 [2022-12-13 11:12:47,799 INFO L226 Difference]: Without dead ends: 50321 [2022-12-13 11:12:47,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:12:47,820 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 818 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 2713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:12:47,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 900 Invalid, 2713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-13 11:12:47,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50321 states. [2022-12-13 11:12:48,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50321 to 46566. [2022-12-13 11:12:48,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46566 states, 46565 states have (on average 1.143326532803608) internal successors, (53239), 46565 states have internal predecessors, (53239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:48,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46566 states to 46566 states and 53239 transitions. [2022-12-13 11:12:48,304 INFO L78 Accepts]: Start accepts. Automaton has 46566 states and 53239 transitions. Word has length 409 [2022-12-13 11:12:48,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:12:48,305 INFO L495 AbstractCegarLoop]: Abstraction has 46566 states and 53239 transitions. [2022-12-13 11:12:48,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:48,305 INFO L276 IsEmpty]: Start isEmpty. Operand 46566 states and 53239 transitions. [2022-12-13 11:12:48,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2022-12-13 11:12:48,309 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:12:48,309 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:12:48,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 11:12:48,310 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:12:48,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:12:48,310 INFO L85 PathProgramCache]: Analyzing trace with hash 684792886, now seen corresponding path program 1 times [2022-12-13 11:12:48,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:12:48,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412432707] [2022-12-13 11:12:48,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:48,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:12:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:48,721 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 396 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-13 11:12:48,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:12:48,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412432707] [2022-12-13 11:12:48,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412432707] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:12:48,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:12:48,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:12:48,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015184577] [2022-12-13 11:12:48,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:12:48,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:12:48,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:12:48,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:12:48,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:12:48,723 INFO L87 Difference]: Start difference. First operand 46566 states and 53239 transitions. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:51,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:12:51,893 INFO L93 Difference]: Finished difference Result 110405 states and 127520 transitions. [2022-12-13 11:12:51,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:12:51,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 468 [2022-12-13 11:12:51,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:12:51,954 INFO L225 Difference]: With dead ends: 110405 [2022-12-13 11:12:51,954 INFO L226 Difference]: Without dead ends: 64592 [2022-12-13 11:12:51,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:12:51,973 INFO L413 NwaCegarLoop]: 1256 mSDtfsCounter, 699 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2357 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 2357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:12:51,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 1264 Invalid, 2836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 2357 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-13 11:12:52,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64592 states. [2022-12-13 11:12:52,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64592 to 60835. [2022-12-13 11:12:52,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60835 states, 60834 states have (on average 1.129335568925272) internal successors, (68702), 60834 states have internal predecessors, (68702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:52,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60835 states to 60835 states and 68702 transitions. [2022-12-13 11:12:52,624 INFO L78 Accepts]: Start accepts. Automaton has 60835 states and 68702 transitions. Word has length 468 [2022-12-13 11:12:52,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:12:52,625 INFO L495 AbstractCegarLoop]: Abstraction has 60835 states and 68702 transitions. [2022-12-13 11:12:52,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:52,625 INFO L276 IsEmpty]: Start isEmpty. Operand 60835 states and 68702 transitions. [2022-12-13 11:12:52,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-12-13 11:12:52,630 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:12:52,630 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:12:52,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 11:12:52,630 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:12:52,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:12:52,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1938920774, now seen corresponding path program 1 times [2022-12-13 11:12:52,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:12:52,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223212565] [2022-12-13 11:12:52,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:52,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:12:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:52,875 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 382 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-12-13 11:12:52,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:12:52,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223212565] [2022-12-13 11:12:52,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223212565] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:12:52,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:12:52,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:12:52,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386911494] [2022-12-13 11:12:52,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:12:52,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:12:52,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:12:52,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:12:52,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:12:52,877 INFO L87 Difference]: Start difference. First operand 60835 states and 68702 transitions. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:55,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:12:55,937 INFO L93 Difference]: Finished difference Result 153210 states and 172786 transitions. [2022-12-13 11:12:55,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:12:55,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 484 [2022-12-13 11:12:55,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:12:56,035 INFO L225 Difference]: With dead ends: 153210 [2022-12-13 11:12:56,035 INFO L226 Difference]: Without dead ends: 93128 [2022-12-13 11:12:56,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:12:56,069 INFO L413 NwaCegarLoop]: 1200 mSDtfsCounter, 569 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2594 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 2934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 2594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:12:56,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 1208 Invalid, 2934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 2594 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 11:12:56,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93128 states. [2022-12-13 11:12:56,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93128 to 88622. [2022-12-13 11:12:56,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88622 states, 88621 states have (on average 1.121788289457352) internal successors, (99414), 88621 states have internal predecessors, (99414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:57,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88622 states to 88622 states and 99414 transitions. [2022-12-13 11:12:57,053 INFO L78 Accepts]: Start accepts. Automaton has 88622 states and 99414 transitions. Word has length 484 [2022-12-13 11:12:57,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:12:57,054 INFO L495 AbstractCegarLoop]: Abstraction has 88622 states and 99414 transitions. [2022-12-13 11:12:57,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:12:57,054 INFO L276 IsEmpty]: Start isEmpty. Operand 88622 states and 99414 transitions. [2022-12-13 11:12:57,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2022-12-13 11:12:57,061 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:12:57,062 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:12:57,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 11:12:57,062 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:12:57,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:12:57,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1393823655, now seen corresponding path program 1 times [2022-12-13 11:12:57,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:12:57,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647773326] [2022-12-13 11:12:57,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:57,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:12:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:57,281 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-12-13 11:12:57,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:12:57,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647773326] [2022-12-13 11:12:57,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647773326] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:12:57,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:12:57,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:12:57,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87300783] [2022-12-13 11:12:57,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:12:57,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:12:57,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:12:57,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:12:57,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:12:57,284 INFO L87 Difference]: Start difference. First operand 88622 states and 99414 transitions. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:00,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:13:00,525 INFO L93 Difference]: Finished difference Result 217796 states and 246607 transitions. [2022-12-13 11:13:00,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:13:00,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 521 [2022-12-13 11:13:00,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:13:00,649 INFO L225 Difference]: With dead ends: 217796 [2022-12-13 11:13:00,649 INFO L226 Difference]: Without dead ends: 129927 [2022-12-13 11:13:00,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:13:00,674 INFO L413 NwaCegarLoop]: 1308 mSDtfsCounter, 594 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2155 mSolverCounterSat, 683 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 2838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 683 IncrementalHoareTripleChecker+Valid, 2155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:13:00,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 1315 Invalid, 2838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [683 Valid, 2155 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 11:13:00,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129927 states. [2022-12-13 11:13:01,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129927 to 121666. [2022-12-13 11:13:02,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121666 states, 121665 states have (on average 1.1104590473842106) internal successors, (135104), 121665 states have internal predecessors, (135104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:02,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121666 states to 121666 states and 135104 transitions. [2022-12-13 11:13:02,222 INFO L78 Accepts]: Start accepts. Automaton has 121666 states and 135104 transitions. Word has length 521 [2022-12-13 11:13:02,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:13:02,222 INFO L495 AbstractCegarLoop]: Abstraction has 121666 states and 135104 transitions. [2022-12-13 11:13:02,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:02,223 INFO L276 IsEmpty]: Start isEmpty. Operand 121666 states and 135104 transitions. [2022-12-13 11:13:02,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2022-12-13 11:13:02,238 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:13:02,238 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:13:02,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 11:13:02,239 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:13:02,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:13:02,239 INFO L85 PathProgramCache]: Analyzing trace with hash -605368177, now seen corresponding path program 1 times [2022-12-13 11:13:02,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:13:02,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855049656] [2022-12-13 11:13:02,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:13:02,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:13:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:13:02,633 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-12-13 11:13:02,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:13:02,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855049656] [2022-12-13 11:13:02,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855049656] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:13:02,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:13:02,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:13:02,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549517359] [2022-12-13 11:13:02,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:13:02,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:13:02,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:13:02,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:13:02,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:13:02,636 INFO L87 Difference]: Start difference. First operand 121666 states and 135104 transitions. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:05,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:13:05,317 INFO L93 Difference]: Finished difference Result 244832 states and 271712 transitions. [2022-12-13 11:13:05,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:13:05,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 571 [2022-12-13 11:13:05,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:13:05,447 INFO L225 Difference]: With dead ends: 244832 [2022-12-13 11:13:05,447 INFO L226 Difference]: Without dead ends: 123919 [2022-12-13 11:13:05,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:13:05,503 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 792 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2213 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 2646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:13:05,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 212 Invalid, 2646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 2213 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 11:13:05,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123919 states. [2022-12-13 11:13:06,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123919 to 119413. [2022-12-13 11:13:06,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119413 states, 119412 states have (on average 1.0944461193179915) internal successors, (130690), 119412 states have internal predecessors, (130690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:06,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119413 states to 119413 states and 130690 transitions. [2022-12-13 11:13:06,867 INFO L78 Accepts]: Start accepts. Automaton has 119413 states and 130690 transitions. Word has length 571 [2022-12-13 11:13:06,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:13:06,867 INFO L495 AbstractCegarLoop]: Abstraction has 119413 states and 130690 transitions. [2022-12-13 11:13:06,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:06,867 INFO L276 IsEmpty]: Start isEmpty. Operand 119413 states and 130690 transitions. [2022-12-13 11:13:06,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2022-12-13 11:13:06,877 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:13:06,877 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:13:06,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 11:13:06,878 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:13:06,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:13:06,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1297666386, now seen corresponding path program 1 times [2022-12-13 11:13:06,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:13:06,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303823997] [2022-12-13 11:13:06,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:13:06,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:13:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:13:07,150 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 664 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-12-13 11:13:07,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:13:07,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303823997] [2022-12-13 11:13:07,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303823997] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:13:07,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:13:07,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:13:07,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27165644] [2022-12-13 11:13:07,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:13:07,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:13:07,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:13:07,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:13:07,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:13:07,152 INFO L87 Difference]: Start difference. First operand 119413 states and 130690 transitions. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:10,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:13:10,275 INFO L93 Difference]: Finished difference Result 268864 states and 294514 transitions. [2022-12-13 11:13:10,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:13:10,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 593 [2022-12-13 11:13:10,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:13:10,446 INFO L225 Difference]: With dead ends: 268864 [2022-12-13 11:13:10,446 INFO L226 Difference]: Without dead ends: 150204 [2022-12-13 11:13:10,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:13:10,513 INFO L413 NwaCegarLoop]: 1327 mSDtfsCounter, 675 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2282 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 2510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 2282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:13:10,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 1335 Invalid, 2510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 2282 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-13 11:13:10,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150204 states. [2022-12-13 11:13:11,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150204 to 149453. [2022-12-13 11:13:12,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149453 states, 149452 states have (on average 1.0841608007922277) internal successors, (162030), 149452 states have internal predecessors, (162030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149453 states to 149453 states and 162030 transitions. [2022-12-13 11:13:12,222 INFO L78 Accepts]: Start accepts. Automaton has 149453 states and 162030 transitions. Word has length 593 [2022-12-13 11:13:12,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:13:12,222 INFO L495 AbstractCegarLoop]: Abstraction has 149453 states and 162030 transitions. [2022-12-13 11:13:12,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:12,222 INFO L276 IsEmpty]: Start isEmpty. Operand 149453 states and 162030 transitions. [2022-12-13 11:13:12,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2022-12-13 11:13:12,236 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:13:12,236 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:13:12,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 11:13:12,237 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:13:12,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:13:12,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1416325111, now seen corresponding path program 1 times [2022-12-13 11:13:12,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:13:12,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432066435] [2022-12-13 11:13:12,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:13:12,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:13:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:13:12,919 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-12-13 11:13:12,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:13:12,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432066435] [2022-12-13 11:13:12,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432066435] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:13:12,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:13:12,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:13:12,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713242604] [2022-12-13 11:13:12,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:13:12,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:13:12,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:13:12,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:13:12,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:13:12,921 INFO L87 Difference]: Start difference. First operand 149453 states and 162030 transitions. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:18,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:13:18,633 INFO L93 Difference]: Finished difference Result 447604 states and 486560 transitions. [2022-12-13 11:13:18,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:13:18,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 628 [2022-12-13 11:13:18,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:13:18,983 INFO L225 Difference]: With dead ends: 447604 [2022-12-13 11:13:18,983 INFO L226 Difference]: Without dead ends: 298904 [2022-12-13 11:13:19,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:13:19,073 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 1720 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4621 mSolverCounterSat, 666 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 5287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 666 IncrementalHoareTripleChecker+Valid, 4621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-12-13 11:13:19,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1720 Valid, 62 Invalid, 5287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [666 Valid, 4621 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-12-13 11:13:19,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298904 states. [2022-12-13 11:13:22,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298904 to 296649. [2022-12-13 11:13:22,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296649 states, 296648 states have (on average 1.0819759445538146) internal successors, (320966), 296648 states have internal predecessors, (320966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:22,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296649 states to 296649 states and 320966 transitions. [2022-12-13 11:13:22,722 INFO L78 Accepts]: Start accepts. Automaton has 296649 states and 320966 transitions. Word has length 628 [2022-12-13 11:13:22,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:13:22,723 INFO L495 AbstractCegarLoop]: Abstraction has 296649 states and 320966 transitions. [2022-12-13 11:13:22,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:22,723 INFO L276 IsEmpty]: Start isEmpty. Operand 296649 states and 320966 transitions. [2022-12-13 11:13:22,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2022-12-13 11:13:22,738 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:13:22,739 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:13:22,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 11:13:22,739 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:13:22,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:13:22,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1226073397, now seen corresponding path program 1 times [2022-12-13 11:13:22,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:13:22,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848824262] [2022-12-13 11:13:22,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:13:22,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:13:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:13:23,373 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 520 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-12-13 11:13:23,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:13:23,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848824262] [2022-12-13 11:13:23,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848824262] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:13:23,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:13:23,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:13:23,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839885794] [2022-12-13 11:13:23,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:13:23,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:13:23,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:13:23,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:13:23,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:13:23,375 INFO L87 Difference]: Start difference. First operand 296649 states and 320966 transitions. Second operand has 4 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:30,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:13:30,051 INFO L93 Difference]: Finished difference Result 725474 states and 786400 transitions. [2022-12-13 11:13:30,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:13:30,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 650 [2022-12-13 11:13:30,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:13:30,715 INFO L225 Difference]: With dead ends: 725474 [2022-12-13 11:13:30,715 INFO L226 Difference]: Without dead ends: 429578 [2022-12-13 11:13:30,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:13:30,845 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 1309 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4789 mSolverCounterSat, 1136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 5925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1136 IncrementalHoareTripleChecker+Valid, 4789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:13:30,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1309 Valid, 223 Invalid, 5925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1136 Valid, 4789 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-12-13 11:13:31,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429578 states. [2022-12-13 11:13:34,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429578 to 388271. [2022-12-13 11:13:34,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388271 states, 388270 states have (on average 1.0850001287763669) internal successors, (421273), 388270 states have internal predecessors, (421273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:35,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388271 states to 388271 states and 421273 transitions. [2022-12-13 11:13:35,529 INFO L78 Accepts]: Start accepts. Automaton has 388271 states and 421273 transitions. Word has length 650 [2022-12-13 11:13:35,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:13:35,530 INFO L495 AbstractCegarLoop]: Abstraction has 388271 states and 421273 transitions. [2022-12-13 11:13:35,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:35,530 INFO L276 IsEmpty]: Start isEmpty. Operand 388271 states and 421273 transitions. [2022-12-13 11:13:35,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2022-12-13 11:13:35,567 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:13:35,568 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:13:35,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 11:13:35,568 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:13:35,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:13:35,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1276313430, now seen corresponding path program 1 times [2022-12-13 11:13:35,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:13:35,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381702455] [2022-12-13 11:13:35,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:13:35,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:13:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:13:36,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 1010 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2022-12-13 11:13:36,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:13:36,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381702455] [2022-12-13 11:13:36,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381702455] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:13:36,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:13:36,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:13:36,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647300709] [2022-12-13 11:13:36,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:13:36,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:13:36,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:13:36,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:13:36,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:13:36,364 INFO L87 Difference]: Start difference. First operand 388271 states and 421273 transitions. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:40,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:13:40,939 INFO L93 Difference]: Finished difference Result 760018 states and 825394 transitions. [2022-12-13 11:13:40,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:13:40,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 700 [2022-12-13 11:13:40,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:13:41,373 INFO L225 Difference]: With dead ends: 760018 [2022-12-13 11:13:41,374 INFO L226 Difference]: Without dead ends: 372500 [2022-12-13 11:13:41,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:13:41,488 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 779 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 2618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:13:41,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 139 Invalid, 2618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 2029 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 11:13:41,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372500 states. [2022-12-13 11:13:45,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372500 to 359733. [2022-12-13 11:13:45,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359733 states, 359732 states have (on average 1.0685871704491121) internal successors, (384405), 359732 states have internal predecessors, (384405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:45,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359733 states to 359733 states and 384405 transitions. [2022-12-13 11:13:45,906 INFO L78 Accepts]: Start accepts. Automaton has 359733 states and 384405 transitions. Word has length 700 [2022-12-13 11:13:45,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:13:45,906 INFO L495 AbstractCegarLoop]: Abstraction has 359733 states and 384405 transitions. [2022-12-13 11:13:45,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:45,907 INFO L276 IsEmpty]: Start isEmpty. Operand 359733 states and 384405 transitions. [2022-12-13 11:13:45,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2022-12-13 11:13:45,938 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:13:45,938 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:13:45,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 11:13:45,938 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:13:45,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:13:45,939 INFO L85 PathProgramCache]: Analyzing trace with hash 817068481, now seen corresponding path program 1 times [2022-12-13 11:13:45,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:13:45,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959877715] [2022-12-13 11:13:45,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:13:45,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:13:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:13:46,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1269 backedges. 1109 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-12-13 11:13:46,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:13:46,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959877715] [2022-12-13 11:13:46,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959877715] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:13:46,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:13:46,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:13:46,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78614845] [2022-12-13 11:13:46,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:13:46,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:13:46,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:13:46,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:13:46,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:13:46,665 INFO L87 Difference]: Start difference. First operand 359733 states and 384405 transitions. Second operand has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:52,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:13:52,938 INFO L93 Difference]: Finished difference Result 781797 states and 835951 transitions. [2022-12-13 11:13:52,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:13:52,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 703 [2022-12-13 11:13:52,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:13:53,521 INFO L225 Difference]: With dead ends: 781797 [2022-12-13 11:13:53,521 INFO L226 Difference]: Without dead ends: 422066 [2022-12-13 11:13:53,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:13:53,644 INFO L413 NwaCegarLoop]: 1286 mSDtfsCounter, 1311 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 5342 mSolverCounterSat, 706 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 6048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 706 IncrementalHoareTripleChecker+Valid, 5342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:13:53,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 1307 Invalid, 6048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [706 Valid, 5342 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-12-13 11:13:54,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422066 states. [2022-12-13 11:13:57,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422066 to 366492. [2022-12-13 11:13:57,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366492 states, 366491 states have (on average 1.0590028131659441) internal successors, (388115), 366491 states have internal predecessors, (388115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:58,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366492 states to 366492 states and 388115 transitions. [2022-12-13 11:13:58,230 INFO L78 Accepts]: Start accepts. Automaton has 366492 states and 388115 transitions. Word has length 703 [2022-12-13 11:13:58,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:13:58,231 INFO L495 AbstractCegarLoop]: Abstraction has 366492 states and 388115 transitions. [2022-12-13 11:13:58,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:13:58,231 INFO L276 IsEmpty]: Start isEmpty. Operand 366492 states and 388115 transitions. [2022-12-13 11:13:58,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2022-12-13 11:13:58,253 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:13:58,253 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:13:58,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 11:13:58,253 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:13:58,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:13:58,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1976755462, now seen corresponding path program 1 times [2022-12-13 11:13:58,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:13:58,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295274424] [2022-12-13 11:13:58,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:13:58,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:13:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:13:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1361 backedges. 1067 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2022-12-13 11:13:58,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:13:58,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295274424] [2022-12-13 11:13:58,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295274424] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:13:58,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:13:58,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:13:58,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972262055] [2022-12-13 11:13:58,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:13:58,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:13:58,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:13:58,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:13:58,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:13:58,689 INFO L87 Difference]: Start difference. First operand 366492 states and 388115 transitions. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:14:02,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:14:02,716 INFO L93 Difference]: Finished difference Result 737488 states and 780792 transitions. [2022-12-13 11:14:02,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:14:02,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 732 [2022-12-13 11:14:02,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:14:03,141 INFO L225 Difference]: With dead ends: 737488 [2022-12-13 11:14:03,141 INFO L226 Difference]: Without dead ends: 371749 [2022-12-13 11:14:03,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:14:03,387 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 755 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2077 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 2606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 2077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:14:03,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 999 Invalid, 2606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 2077 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 11:14:03,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371749 states. [2022-12-13 11:14:06,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371749 to 339456. [2022-12-13 11:14:07,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339456 states, 339455 states have (on average 1.0485454625797235) internal successors, (355934), 339455 states have internal predecessors, (355934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:14:07,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339456 states to 339456 states and 355934 transitions. [2022-12-13 11:14:07,545 INFO L78 Accepts]: Start accepts. Automaton has 339456 states and 355934 transitions. Word has length 732 [2022-12-13 11:14:07,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:14:07,546 INFO L495 AbstractCegarLoop]: Abstraction has 339456 states and 355934 transitions. [2022-12-13 11:14:07,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:14:07,546 INFO L276 IsEmpty]: Start isEmpty. Operand 339456 states and 355934 transitions. [2022-12-13 11:14:07,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2022-12-13 11:14:07,570 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:14:07,570 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:14:07,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 11:14:07,570 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:14:07,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:14:07,571 INFO L85 PathProgramCache]: Analyzing trace with hash 513554875, now seen corresponding path program 1 times [2022-12-13 11:14:07,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:14:07,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175609601] [2022-12-13 11:14:07,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:14:07,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:14:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:14:08,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 1005 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-12-13 11:14:08,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:14:08,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175609601] [2022-12-13 11:14:08,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175609601] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:14:08,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:14:08,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:14:08,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973339130] [2022-12-13 11:14:08,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:14:08,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:14:08,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:14:08,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:14:08,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:14:08,514 INFO L87 Difference]: Start difference. First operand 339456 states and 355934 transitions. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:14:13,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:14:13,245 INFO L93 Difference]: Finished difference Result 704444 states and 738247 transitions. [2022-12-13 11:14:13,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:14:13,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 795 [2022-12-13 11:14:13,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:14:13,660 INFO L225 Difference]: With dead ends: 704444 [2022-12-13 11:14:13,660 INFO L226 Difference]: Without dead ends: 365741 [2022-12-13 11:14:13,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:14:13,916 INFO L413 NwaCegarLoop]: 1266 mSDtfsCounter, 590 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 2595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:14:13,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 1274 Invalid, 2595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2439 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 11:14:14,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365741 states. [2022-12-13 11:14:17,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365741 to 358982. [2022-12-13 11:14:17,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358982 states, 358981 states have (on average 1.0467935628905152) internal successors, (375779), 358981 states have internal predecessors, (375779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:14:17,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358982 states to 358982 states and 375779 transitions. [2022-12-13 11:14:17,955 INFO L78 Accepts]: Start accepts. Automaton has 358982 states and 375779 transitions. Word has length 795 [2022-12-13 11:14:17,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:14:17,956 INFO L495 AbstractCegarLoop]: Abstraction has 358982 states and 375779 transitions. [2022-12-13 11:14:17,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:14:17,956 INFO L276 IsEmpty]: Start isEmpty. Operand 358982 states and 375779 transitions. [2022-12-13 11:14:18,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2022-12-13 11:14:18,151 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:14:18,151 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:14:18,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 11:14:18,151 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:14:18,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:14:18,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1652023416, now seen corresponding path program 1 times [2022-12-13 11:14:18,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:14:18,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651765814] [2022-12-13 11:14:18,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:14:18,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:14:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:14:19,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1737 backedges. 1282 proven. 0 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2022-12-13 11:14:19,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:14:19,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651765814] [2022-12-13 11:14:19,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651765814] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:14:19,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:14:19,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:14:19,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448267562] [2022-12-13 11:14:19,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:14:19,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:14:19,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:14:19,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:14:19,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:14:19,502 INFO L87 Difference]: Start difference. First operand 358982 states and 375779 transitions. Second operand has 4 states, 4 states have (on average 132.5) internal successors, (530), 4 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:14:26,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:14:26,401 INFO L93 Difference]: Finished difference Result 799823 states and 837172 transitions. [2022-12-13 11:14:26,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:14:26,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 132.5) internal successors, (530), 4 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 807 [2022-12-13 11:14:26,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:14:26,945 INFO L225 Difference]: With dead ends: 799823 [2022-12-13 11:14:26,946 INFO L226 Difference]: Without dead ends: 441594 [2022-12-13 11:14:27,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:14:27,065 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 2078 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3675 mSolverCounterSat, 1416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 5091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1416 IncrementalHoareTripleChecker+Valid, 3675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:14:27,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2078 Valid, 117 Invalid, 5091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1416 Valid, 3675 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-12-13 11:14:27,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441594 states. [2022-12-13 11:14:31,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441594 to 378508. [2022-12-13 11:14:31,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378508 states, 378507 states have (on average 1.0449767111308377) internal successors, (395531), 378507 states have internal predecessors, (395531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:14:31,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378508 states to 378508 states and 395531 transitions. [2022-12-13 11:14:31,887 INFO L78 Accepts]: Start accepts. Automaton has 378508 states and 395531 transitions. Word has length 807 [2022-12-13 11:14:31,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:14:31,887 INFO L495 AbstractCegarLoop]: Abstraction has 378508 states and 395531 transitions. [2022-12-13 11:14:31,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.5) internal successors, (530), 4 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:14:31,887 INFO L276 IsEmpty]: Start isEmpty. Operand 378508 states and 395531 transitions. [2022-12-13 11:14:31,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2022-12-13 11:14:31,912 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:14:31,912 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:14:31,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 11:14:31,912 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:14:31,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:14:31,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1469514698, now seen corresponding path program 1 times [2022-12-13 11:14:31,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:14:31,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205757378] [2022-12-13 11:14:31,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:14:31,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:14:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:14:32,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 1355 proven. 0 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2022-12-13 11:14:32,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:14:32,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205757378] [2022-12-13 11:14:32,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205757378] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:14:32,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:14:32,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:14:32,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671536379] [2022-12-13 11:14:32,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:14:32,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:14:32,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:14:32,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:14:32,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:14:32,634 INFO L87 Difference]: Start difference. First operand 378508 states and 395531 transitions. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:14:36,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:14:36,808 INFO L93 Difference]: Finished difference Result 786303 states and 821960 transitions. [2022-12-13 11:14:36,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:14:36,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 830 [2022-12-13 11:14:36,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:14:37,485 INFO L225 Difference]: With dead ends: 786303 [2022-12-13 11:14:37,485 INFO L226 Difference]: Without dead ends: 408548 [2022-12-13 11:14:37,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:14:37,637 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 607 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2357 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 2696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 2357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 11:14:37,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 409 Invalid, 2696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 2357 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 11:14:38,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408548 states. [2022-12-13 11:14:41,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408548 to 391275. [2022-12-13 11:14:41,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391275 states, 391274 states have (on average 1.0457019888875827) internal successors, (409156), 391274 states have internal predecessors, (409156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:14:42,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391275 states to 391275 states and 409156 transitions. [2022-12-13 11:14:42,030 INFO L78 Accepts]: Start accepts. Automaton has 391275 states and 409156 transitions. Word has length 830 [2022-12-13 11:14:42,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:14:42,031 INFO L495 AbstractCegarLoop]: Abstraction has 391275 states and 409156 transitions. [2022-12-13 11:14:42,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:14:42,031 INFO L276 IsEmpty]: Start isEmpty. Operand 391275 states and 409156 transitions. [2022-12-13 11:14:42,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2022-12-13 11:14:42,059 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:14:42,059 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:14:42,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 11:14:42,060 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:14:42,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:14:42,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1504154308, now seen corresponding path program 1 times [2022-12-13 11:14:42,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:14:42,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413023935] [2022-12-13 11:14:42,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:14:42,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:14:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:14:43,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 1079 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-12-13 11:14:43,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:14:43,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413023935] [2022-12-13 11:14:43,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413023935] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:14:43,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:14:43,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:14:43,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854176713] [2022-12-13 11:14:43,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:14:43,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:14:43,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:14:43,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:14:43,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:14:43,109 INFO L87 Difference]: Start difference. First operand 391275 states and 409156 transitions. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:14:47,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:14:47,868 INFO L93 Difference]: Finished difference Result 793813 states and 829912 transitions. [2022-12-13 11:14:47,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:14:47,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 832 [2022-12-13 11:14:47,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:14:48,361 INFO L225 Difference]: With dead ends: 793813 [2022-12-13 11:14:48,362 INFO L226 Difference]: Without dead ends: 403291 [2022-12-13 11:14:48,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:14:48,478 INFO L413 NwaCegarLoop]: 1254 mSDtfsCounter, 605 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 2399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:14:48,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 1261 Invalid, 2399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 11:14:48,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403291 states. [2022-12-13 11:14:52,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403291 to 383014. [2022-12-13 11:14:52,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383014 states, 383013 states have (on average 1.044724330505753) internal successors, (400143), 383013 states have internal predecessors, (400143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:14:53,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383014 states to 383014 states and 400143 transitions. [2022-12-13 11:14:53,040 INFO L78 Accepts]: Start accepts. Automaton has 383014 states and 400143 transitions. Word has length 832 [2022-12-13 11:14:53,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:14:53,040 INFO L495 AbstractCegarLoop]: Abstraction has 383014 states and 400143 transitions. [2022-12-13 11:14:53,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:14:53,041 INFO L276 IsEmpty]: Start isEmpty. Operand 383014 states and 400143 transitions. [2022-12-13 11:14:53,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2022-12-13 11:14:53,075 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:14:53,075 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:14:53,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 11:14:53,075 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:14:53,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:14:53,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1441597335, now seen corresponding path program 1 times [2022-12-13 11:14:53,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:14:53,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179290187] [2022-12-13 11:14:53,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:14:53,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:14:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:14:54,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2316 backedges. 1537 proven. 0 refuted. 0 times theorem prover too weak. 779 trivial. 0 not checked. [2022-12-13 11:14:54,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:14:54,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179290187] [2022-12-13 11:14:54,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179290187] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:14:54,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:14:54,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:14:54,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70096664] [2022-12-13 11:14:54,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:14:54,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:14:54,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:14:54,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:14:54,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:14:54,141 INFO L87 Difference]: Start difference. First operand 383014 states and 400143 transitions. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:14:58,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:14:58,185 INFO L93 Difference]: Finished difference Result 710452 states and 742880 transitions. [2022-12-13 11:14:58,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:14:58,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 904 [2022-12-13 11:14:58,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:14:58,714 INFO L225 Difference]: With dead ends: 710452 [2022-12-13 11:14:58,714 INFO L226 Difference]: Without dead ends: 385267 [2022-12-13 11:14:58,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:14:58,802 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 785 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2282 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 2643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 2282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 11:14:58,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 98 Invalid, 2643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 2282 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 11:14:59,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385267 states. [2022-12-13 11:15:02,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385267 to 378508. [2022-12-13 11:15:02,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378508 states, 378507 states have (on average 1.0413440174157942) internal successors, (394156), 378507 states have internal predecessors, (394156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:15:03,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378508 states to 378508 states and 394156 transitions. [2022-12-13 11:15:03,312 INFO L78 Accepts]: Start accepts. Automaton has 378508 states and 394156 transitions. Word has length 904 [2022-12-13 11:15:03,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:15:03,312 INFO L495 AbstractCegarLoop]: Abstraction has 378508 states and 394156 transitions. [2022-12-13 11:15:03,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:15:03,313 INFO L276 IsEmpty]: Start isEmpty. Operand 378508 states and 394156 transitions. [2022-12-13 11:15:03,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 921 [2022-12-13 11:15:03,344 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:15:03,345 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:15:03,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 11:15:03,345 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:15:03,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:15:03,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1025585168, now seen corresponding path program 1 times [2022-12-13 11:15:03,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:15:03,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962759753] [2022-12-13 11:15:03,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:15:03,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:15:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:15:03,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2460 backedges. 1700 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-12-13 11:15:03,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:15:03,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962759753] [2022-12-13 11:15:03,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962759753] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:15:03,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:15:03,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:15:03,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778306580] [2022-12-13 11:15:03,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:15:03,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:15:03,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:15:03,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:15:03,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:15:03,884 INFO L87 Difference]: Start difference. First operand 378508 states and 394156 transitions. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:15:09,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:15:09,340 INFO L93 Difference]: Finished difference Result 814090 states and 848694 transitions. [2022-12-13 11:15:09,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:15:09,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 920 [2022-12-13 11:15:09,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:15:09,937 INFO L225 Difference]: With dead ends: 814090 [2022-12-13 11:15:09,937 INFO L226 Difference]: Without dead ends: 436335 [2022-12-13 11:15:10,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:15:10,076 INFO L413 NwaCegarLoop]: 1237 mSDtfsCounter, 684 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2498 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 2896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 2498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:15:10,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 1244 Invalid, 2896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 2498 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 11:15:10,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436335 states. [2022-12-13 11:15:14,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436335 to 430327. [2022-12-13 11:15:14,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430327 states, 430326 states have (on average 1.0410572449724163) internal successors, (447994), 430326 states have internal predecessors, (447994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:15:15,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430327 states to 430327 states and 447994 transitions. [2022-12-13 11:15:15,215 INFO L78 Accepts]: Start accepts. Automaton has 430327 states and 447994 transitions. Word has length 920 [2022-12-13 11:15:15,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:15:15,215 INFO L495 AbstractCegarLoop]: Abstraction has 430327 states and 447994 transitions. [2022-12-13 11:15:15,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:15:15,215 INFO L276 IsEmpty]: Start isEmpty. Operand 430327 states and 447994 transitions. [2022-12-13 11:15:15,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2022-12-13 11:15:15,471 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:15:15,472 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:15:15,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 11:15:15,472 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:15:15,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:15:15,472 INFO L85 PathProgramCache]: Analyzing trace with hash 740122710, now seen corresponding path program 1 times [2022-12-13 11:15:15,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:15:15,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314077469] [2022-12-13 11:15:15,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:15:15,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:15:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:15:16,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2345 backedges. 1210 proven. 54 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2022-12-13 11:15:16,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:15:16,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314077469] [2022-12-13 11:15:16,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314077469] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:15:16,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290989976] [2022-12-13 11:15:16,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:15:16,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:15:16,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:15:16,899 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:15:16,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:15:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:15:17,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 11:15:17,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:15:17,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2345 backedges. 1347 proven. 0 refuted. 0 times theorem prover too weak. 998 trivial. 0 not checked. [2022-12-13 11:15:17,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:15:17,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290989976] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:15:17,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:15:17,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-13 11:15:17,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760764299] [2022-12-13 11:15:17,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:15:17,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:15:17,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:15:17,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:15:17,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:15:17,276 INFO L87 Difference]: Start difference. First operand 430327 states and 447994 transitions. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:15:22,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:15:22,220 INFO L93 Difference]: Finished difference Result 883182 states and 919250 transitions. [2022-12-13 11:15:22,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:15:22,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 921 [2022-12-13 11:15:22,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:15:22,729 INFO L225 Difference]: With dead ends: 883182 [2022-12-13 11:15:22,730 INFO L226 Difference]: Without dead ends: 453608 [2022-12-13 11:15:22,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 920 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:15:22,819 INFO L413 NwaCegarLoop]: 1229 mSDtfsCounter, 705 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 2876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:15:22,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 1236 Invalid, 2876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 11:15:23,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453608 states. [2022-12-13 11:15:27,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453608 to 428825. [2022-12-13 11:15:27,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428825 states, 428824 states have (on average 1.0384796559894036) internal successors, (445325), 428824 states have internal predecessors, (445325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:15:27,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428825 states to 428825 states and 445325 transitions. [2022-12-13 11:15:27,962 INFO L78 Accepts]: Start accepts. Automaton has 428825 states and 445325 transitions. Word has length 921 [2022-12-13 11:15:27,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:15:27,962 INFO L495 AbstractCegarLoop]: Abstraction has 428825 states and 445325 transitions. [2022-12-13 11:15:27,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:15:27,963 INFO L276 IsEmpty]: Start isEmpty. Operand 428825 states and 445325 transitions. [2022-12-13 11:15:28,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2022-12-13 11:15:28,015 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:15:28,016 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:15:28,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 11:15:28,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2b8942-e854-41b4-8950-bc815c20f535/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 11:15:28,217 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:15:28,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:15:28,219 INFO L85 PathProgramCache]: Analyzing trace with hash 296503575, now seen corresponding path program 1 times [2022-12-13 11:15:28,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:15:28,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919612909] [2022-12-13 11:15:28,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:15:28,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:15:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:15:28,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2043 backedges. 951 proven. 0 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2022-12-13 11:15:28,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:15:28,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919612909] [2022-12-13 11:15:28,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919612909] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:15:28,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:15:28,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:15:28,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806737925] [2022-12-13 11:15:28,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:15:28,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:15:28,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:15:28,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:15:28,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:15:28,905 INFO L87 Difference]: Start difference. First operand 428825 states and 445325 transitions. Second operand has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:15:33,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:15:33,489 INFO L93 Difference]: Finished difference Result 856146 states and 889117 transitions. [2022-12-13 11:15:33,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:15:33,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 983 [2022-12-13 11:15:33,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:15:34,022 INFO L225 Difference]: With dead ends: 856146 [2022-12-13 11:15:34,022 INFO L226 Difference]: Without dead ends: 428074 [2022-12-13 11:15:34,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:15:34,171 INFO L413 NwaCegarLoop]: 1301 mSDtfsCounter, 521 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 2383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:15:34,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 1309 Invalid, 2383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 2089 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 11:15:34,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428074 states. [2022-12-13 11:15:38,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428074 to 413805. [2022-12-13 11:15:38,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413805 states, 413804 states have (on average 1.030758523358885) internal successors, (426532), 413804 states have internal predecessors, (426532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:15:38,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413805 states to 413805 states and 426532 transitions. [2022-12-13 11:15:38,905 INFO L78 Accepts]: Start accepts. Automaton has 413805 states and 426532 transitions. Word has length 983 [2022-12-13 11:15:38,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:15:38,906 INFO L495 AbstractCegarLoop]: Abstraction has 413805 states and 426532 transitions. [2022-12-13 11:15:38,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:15:38,906 INFO L276 IsEmpty]: Start isEmpty. Operand 413805 states and 426532 transitions. [2022-12-13 11:15:38,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1017 [2022-12-13 11:15:38,966 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:15:38,966 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:15:38,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 11:15:38,967 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:15:38,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:15:38,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1780166068, now seen corresponding path program 1 times [2022-12-13 11:15:38,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:15:38,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879276984] [2022-12-13 11:15:38,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:15:38,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:15:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:15:40,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1819 backedges. 1433 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2022-12-13 11:15:40,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:15:40,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879276984] [2022-12-13 11:15:40,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879276984] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:15:40,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:15:40,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:15:40,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138439562] [2022-12-13 11:15:40,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:15:40,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:15:40,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:15:40,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:15:40,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:15:40,153 INFO L87 Difference]: Start difference. First operand 413805 states and 426532 transitions. Second operand has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:15:45,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:15:45,091 INFO L93 Difference]: Finished difference Result 852391 states and 878742 transitions. [2022-12-13 11:15:45,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:15:45,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1016 [2022-12-13 11:15:45,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:15:45,650 INFO L225 Difference]: With dead ends: 852391 [2022-12-13 11:15:45,650 INFO L226 Difference]: Without dead ends: 439339 [2022-12-13 11:15:45,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:15:45,795 INFO L413 NwaCegarLoop]: 1262 mSDtfsCounter, 600 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2157 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 2427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 2157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:15:45,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 1270 Invalid, 2427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 2157 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 11:15:46,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439339 states. [2022-12-13 11:15:50,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439339 to 423568. [2022-12-13 11:15:50,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423568 states, 423567 states have (on average 1.0299574801625244) internal successors, (436256), 423567 states have internal predecessors, (436256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:15:50,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423568 states to 423568 states and 436256 transitions. [2022-12-13 11:15:50,927 INFO L78 Accepts]: Start accepts. Automaton has 423568 states and 436256 transitions. Word has length 1016 [2022-12-13 11:15:50,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:15:50,928 INFO L495 AbstractCegarLoop]: Abstraction has 423568 states and 436256 transitions. [2022-12-13 11:15:50,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:15:50,928 INFO L276 IsEmpty]: Start isEmpty. Operand 423568 states and 436256 transitions. [2022-12-13 11:15:50,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1030 [2022-12-13 11:15:50,986 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:15:50,986 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:15:50,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 11:15:50,987 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:15:50,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:15:50,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1075504051, now seen corresponding path program 1 times [2022-12-13 11:15:50,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:15:50,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803538237] [2022-12-13 11:15:50,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:15:50,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:15:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat