./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label51.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b085c6c7-3e7d-4719-b512-9fcdd7d2caab/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b085c6c7-3e7d-4719-b512-9fcdd7d2caab/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_b085c6c7-3e7d-4719-b512-9fcdd7d2caab/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b085c6c7-3e7d-4719-b512-9fcdd7d2caab/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label51.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b085c6c7-3e7d-4719-b512-9fcdd7d2caab/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_b085c6c7-3e7d-4719-b512-9fcdd7d2caab/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 41e23ce61c4ec5f5654fc4bd84a547bf559989a53840176f6f531be89d4f357c --- 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 13:27:59,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:27:59,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:27:59,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:27:59,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:27:59,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:27:59,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:27:59,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:27:59,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:27:59,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:27:59,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:27:59,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:27:59,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:27:59,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:27:59,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:27:59,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:27:59,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:27:59,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:27:59,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:27:59,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:27:59,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:27:59,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:27:59,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:27:59,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:27:59,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:27:59,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:27:59,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:27:59,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:27:59,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:27:59,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:27:59,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:27:59,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:27:59,548 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:27:59,549 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:27:59,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:27:59,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:27:59,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:27:59,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:27:59,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:27:59,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:27:59,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:27:59,554 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b085c6c7-3e7d-4719-b512-9fcdd7d2caab/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 13:27:59,574 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:27:59,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:27:59,575 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:27:59,575 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:27:59,576 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:27:59,576 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:27:59,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:27:59,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:27:59,577 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:27:59,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:27:59,577 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:27:59,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:27:59,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:27:59,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:27:59,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:27:59,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:27:59,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:27:59,578 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:27:59,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:27:59,579 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:27:59,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:27:59,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:27:59,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:27:59,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:27:59,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:27:59,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:27:59,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:27:59,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:27:59,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:27:59,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:27:59,581 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:27:59,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:27:59,581 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:27:59,581 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:27:59,582 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:27:59,582 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_b085c6c7-3e7d-4719-b512-9fcdd7d2caab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b085c6c7-3e7d-4719-b512-9fcdd7d2caab/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41e23ce61c4ec5f5654fc4bd84a547bf559989a53840176f6f531be89d4f357c [2022-12-13 13:27:59,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:27:59,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:27:59,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:27:59,783 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:27:59,784 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:27:59,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b085c6c7-3e7d-4719-b512-9fcdd7d2caab/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/eca-rers2012/Problem07_label51.c [2022-12-13 13:28:02,348 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:28:03,323 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:28:03,323 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b085c6c7-3e7d-4719-b512-9fcdd7d2caab/sv-benchmarks/c/eca-rers2012/Problem07_label51.c [2022-12-13 13:28:03,440 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b085c6c7-3e7d-4719-b512-9fcdd7d2caab/bin/uautomizer-uyxdKDjOR8/data/3f57b2618/f1def56c51c04ebdae89daa3fd9c62f5/FLAGd1babc9cf [2022-12-13 13:28:03,450 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b085c6c7-3e7d-4719-b512-9fcdd7d2caab/bin/uautomizer-uyxdKDjOR8/data/3f57b2618/f1def56c51c04ebdae89daa3fd9c62f5 [2022-12-13 13:28:03,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:28:03,453 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:28:03,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:28:03,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:28:03,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:28:03,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:28:03" (1/1) ... [2022-12-13 13:28:03,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@734db5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:03, skipping insertion in model container [2022-12-13 13:28:03,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:28:03" (1/1) ... [2022-12-13 13:28:03,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:28:04,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:28:13,840 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_b085c6c7-3e7d-4719-b512-9fcdd7d2caab/sv-benchmarks/c/eca-rers2012/Problem07_label51.c[2774270,2774283] [2022-12-13 13:28:13,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:28:13,896 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:28:19,763 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_b085c6c7-3e7d-4719-b512-9fcdd7d2caab/sv-benchmarks/c/eca-rers2012/Problem07_label51.c[2774270,2774283] [2022-12-13 13:28:19,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:28:20,364 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:28:20,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:20 WrapperNode [2022-12-13 13:28:20,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:28:20,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:28:20,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:28:20,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:28:20,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:20" (1/1) ... [2022-12-13 13:28:20,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:20" (1/1) ... [2022-12-13 13:28:21,887 INFO L138 Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773 [2022-12-13 13:28:21,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:28:21,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:28:21,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:28:21,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:28:21,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:20" (1/1) ... [2022-12-13 13:28:21,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:20" (1/1) ... [2022-12-13 13:28:22,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:20" (1/1) ... [2022-12-13 13:28:22,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:20" (1/1) ... [2022-12-13 13:28:22,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:20" (1/1) ... [2022-12-13 13:28:22,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:20" (1/1) ... [2022-12-13 13:28:22,833 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:20" (1/1) ... [2022-12-13 13:28:22,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:20" (1/1) ... [2022-12-13 13:28:23,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:28:23,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:28:23,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:28:23,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:28:23,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:20" (1/1) ... [2022-12-13 13:28:23,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:28:23,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b085c6c7-3e7d-4719-b512-9fcdd7d2caab/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:28:23,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b085c6c7-3e7d-4719-b512-9fcdd7d2caab/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:28:23,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b085c6c7-3e7d-4719-b512-9fcdd7d2caab/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:28:23,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:28:23,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:28:23,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:28:23,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:28:23,306 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:28:23,308 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:28:54,555 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:28:54,587 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:28:54,587 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 13:28:54,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:28:54 BoogieIcfgContainer [2022-12-13 13:28:54,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:28:54,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:28:54,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:28:54,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:28:54,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:28:03" (1/3) ... [2022-12-13 13:28:54,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce23104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:28:54, skipping insertion in model container [2022-12-13 13:28:54,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:20" (2/3) ... [2022-12-13 13:28:54,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce23104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:28:54, skipping insertion in model container [2022-12-13 13:28:54,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:28:54" (3/3) ... [2022-12-13 13:28:54,600 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem07_label51.c [2022-12-13 13:28:54,612 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:28:54,613 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:28:54,737 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:28:54,741 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;@3640247d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:28:54,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 13:28:54,765 INFO L276 IsEmpty]: Start isEmpty. Operand has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 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 13:28:55,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10131 [2022-12-13 13:28:55,351 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:28:55,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:28:55,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:28:55,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:55,362 INFO L85 PathProgramCache]: Analyzing trace with hash -600832726, now seen corresponding path program 1 times [2022-12-13 13:28:55,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:55,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941933200] [2022-12-13 13:28:55,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:55,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:21,148 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 13:29:21,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:21,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941933200] [2022-12-13 13:29:21,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941933200] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:29:21,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:29:21,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:29:21,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867150112] [2022-12-13 13:29:21,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:29:21,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:29:21,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:29:21,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:29:21,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:29:21,204 INFO L87 Difference]: Start difference. First operand has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 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 3376.6666666666665) internal successors, (10130), 2 states have internal predecessors, (10130), 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 13:29:50,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:29:50,980 INFO L93 Difference]: Finished difference Result 30705 states and 61134 transitions. [2022-12-13 13:29:50,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:29:50,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3376.6666666666665) internal successors, (10130), 2 states have internal predecessors, (10130), 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 10130 [2022-12-13 13:29:50,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:29:51,051 INFO L225 Difference]: With dead ends: 30705 [2022-12-13 13:29:51,052 INFO L226 Difference]: Without dead ends: 20384 [2022-12-13 13:29:51,063 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 13:29:51,065 INFO L413 NwaCegarLoop]: 3649 mSDtfsCounter, 895 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 32216 mSolverCounterSat, 10597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 3702 SdHoareTripleChecker+Invalid, 42813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10597 IncrementalHoareTripleChecker+Valid, 32216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:29:51,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 3702 Invalid, 42813 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10597 Valid, 32216 Invalid, 0 Unknown, 0 Unchecked, 29.2s Time] [2022-12-13 13:29:51,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20384 states. [2022-12-13 13:29:51,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20384 to 20384. [2022-12-13 13:29:51,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20384 states, 20383 states have (on average 1.815434430652995) internal successors, (37004), 20383 states have internal predecessors, (37004), 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 13:29:51,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20384 states to 20384 states and 37004 transitions. [2022-12-13 13:29:51,417 INFO L78 Accepts]: Start accepts. Automaton has 20384 states and 37004 transitions. Word has length 10130 [2022-12-13 13:29:51,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:29:51,426 INFO L495 AbstractCegarLoop]: Abstraction has 20384 states and 37004 transitions. [2022-12-13 13:29:51,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3376.6666666666665) internal successors, (10130), 2 states have internal predecessors, (10130), 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 13:29:51,428 INFO L276 IsEmpty]: Start isEmpty. Operand 20384 states and 37004 transitions. [2022-12-13 13:29:52,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10135 [2022-12-13 13:29:52,001 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:29:52,004 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:29:52,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:29:52,004 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:29:52,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:52,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1812832594, now seen corresponding path program 1 times [2022-12-13 13:29:52,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:52,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379192526] [2022-12-13 13:29:52,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:52,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:30:11,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:30:11,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:30:11,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379192526] [2022-12-13 13:30:11,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379192526] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:30:11,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:30:11,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:30:11,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503795111] [2022-12-13 13:30:11,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:30:11,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:30:11,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:30:11,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:30:11,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:30:11,387 INFO L87 Difference]: Start difference. First operand 20384 states and 37004 transitions. Second operand has 3 states, 3 states have (on average 3378.0) internal successors, (10134), 2 states have internal predecessors, (10134), 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 13:30:40,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:30:40,116 INFO L93 Difference]: Finished difference Result 61146 states and 111007 transitions. [2022-12-13 13:30:40,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:30:40,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3378.0) internal successors, (10134), 2 states have internal predecessors, (10134), 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 10134 [2022-12-13 13:30:40,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:30:40,178 INFO L225 Difference]: With dead ends: 61146 [2022-12-13 13:30:40,178 INFO L226 Difference]: Without dead ends: 40764 [2022-12-13 13:30:40,191 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 13:30:40,192 INFO L413 NwaCegarLoop]: 4828 mSDtfsCounter, 13865 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28700 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13865 SdHoareTripleChecker+Valid, 4877 SdHoareTripleChecker+Invalid, 40458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:30:40,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13865 Valid, 4877 Invalid, 40458 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28700 Invalid, 0 Unknown, 0 Unchecked, 28.2s Time] [2022-12-13 13:30:40,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40764 states. [2022-12-13 13:30:40,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40764 to 40764. [2022-12-13 13:30:40,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40764 states, 40763 states have (on average 1.6229669062630327) internal successors, (66157), 40763 states have internal predecessors, (66157), 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 13:30:40,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40764 states to 40764 states and 66157 transitions. [2022-12-13 13:30:40,637 INFO L78 Accepts]: Start accepts. Automaton has 40764 states and 66157 transitions. Word has length 10134 [2022-12-13 13:30:40,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:30:40,638 INFO L495 AbstractCegarLoop]: Abstraction has 40764 states and 66157 transitions. [2022-12-13 13:30:40,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3378.0) internal successors, (10134), 2 states have internal predecessors, (10134), 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 13:30:40,640 INFO L276 IsEmpty]: Start isEmpty. Operand 40764 states and 66157 transitions. [2022-12-13 13:30:41,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10136 [2022-12-13 13:30:41,226 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:30:41,229 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:30:41,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:30:41,230 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:30:41,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:30:41,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1910886158, now seen corresponding path program 1 times [2022-12-13 13:30:41,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:30:41,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452403932] [2022-12-13 13:30:41,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:30:41,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:30:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:31:00,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:31:00,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:31:00,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452403932] [2022-12-13 13:31:00,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452403932] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:31:00,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:31:00,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:31:00,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627042987] [2022-12-13 13:31:00,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:31:00,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:31:00,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:31:00,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:31:00,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:31:00,038 INFO L87 Difference]: Start difference. First operand 40764 states and 66157 transitions. Second operand has 3 states, 3 states have (on average 3378.3333333333335) internal successors, (10135), 2 states have internal predecessors, (10135), 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 13:31:30,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:31:30,085 INFO L93 Difference]: Finished difference Result 122286 states and 198466 transitions. [2022-12-13 13:31:30,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:31:30,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3378.3333333333335) internal successors, (10135), 2 states have internal predecessors, (10135), 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 10135 [2022-12-13 13:31:30,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:31:30,153 INFO L225 Difference]: With dead ends: 122286 [2022-12-13 13:31:30,153 INFO L226 Difference]: Without dead ends: 81524 [2022-12-13 13:31:30,180 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 13:31:30,181 INFO L413 NwaCegarLoop]: 4823 mSDtfsCounter, 13686 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28825 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13686 SdHoareTripleChecker+Valid, 4872 SdHoareTripleChecker+Invalid, 40502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 28825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.4s IncrementalHoareTripleChecker+Time [2022-12-13 13:31:30,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13686 Valid, 4872 Invalid, 40502 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 28825 Invalid, 0 Unknown, 0 Unchecked, 29.4s Time] [2022-12-13 13:31:30,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81524 states. [2022-12-13 13:31:30,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81524 to 81524. [2022-12-13 13:31:30,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81524 states, 81523 states have (on average 1.4781472713222035) internal successors, (120503), 81523 states have internal predecessors, (120503), 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 13:31:30,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81524 states to 81524 states and 120503 transitions. [2022-12-13 13:31:30,966 INFO L78 Accepts]: Start accepts. Automaton has 81524 states and 120503 transitions. Word has length 10135 [2022-12-13 13:31:30,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:31:30,967 INFO L495 AbstractCegarLoop]: Abstraction has 81524 states and 120503 transitions. [2022-12-13 13:31:30,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3378.3333333333335) internal successors, (10135), 2 states have internal predecessors, (10135), 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 13:31:30,969 INFO L276 IsEmpty]: Start isEmpty. Operand 81524 states and 120503 transitions. [2022-12-13 13:31:31,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10142 [2022-12-13 13:31:31,600 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:31:31,603 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:31,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:31:31,603 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:31:31,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:31:31,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1536175509, now seen corresponding path program 1 times [2022-12-13 13:31:31,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:31:31,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134483723] [2022-12-13 13:31:31,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:31:31,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:31:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:31:50,694 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 13:31:50,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:31:50,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134483723] [2022-12-13 13:31:50,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134483723] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:31:50,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:31:50,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:31:50,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274707034] [2022-12-13 13:31:50,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:31:50,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:31:50,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:31:50,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:31:50,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:31:50,745 INFO L87 Difference]: Start difference. First operand 81524 states and 120503 transitions. Second operand has 3 states, 3 states have (on average 3379.3333333333335) internal successors, (10138), 2 states have internal predecessors, (10138), 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 13:32:20,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:32:20,108 INFO L93 Difference]: Finished difference Result 244566 states and 361504 transitions. [2022-12-13 13:32:20,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:32:20,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3379.3333333333335) internal successors, (10138), 2 states have internal predecessors, (10138), 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 10141 [2022-12-13 13:32:20,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:32:20,261 INFO L225 Difference]: With dead ends: 244566 [2022-12-13 13:32:20,261 INFO L226 Difference]: Without dead ends: 163044 [2022-12-13 13:32:20,289 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 13:32:20,290 INFO L413 NwaCegarLoop]: 8617 mSDtfsCounter, 11070 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 31006 mSolverCounterSat, 11008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11070 SdHoareTripleChecker+Valid, 8666 SdHoareTripleChecker+Invalid, 42014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11008 IncrementalHoareTripleChecker+Valid, 31006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.4s IncrementalHoareTripleChecker+Time [2022-12-13 13:32:20,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11070 Valid, 8666 Invalid, 42014 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11008 Valid, 31006 Invalid, 0 Unknown, 0 Unchecked, 28.4s Time] [2022-12-13 13:32:20,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163044 states. [2022-12-13 13:32:21,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163044 to 163044. [2022-12-13 13:32:21,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163044 states, 163043 states have (on average 1.3667253423943377) internal successors, (222835), 163043 states have internal predecessors, (222835), 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 13:32:21,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163044 states to 163044 states and 222835 transitions. [2022-12-13 13:32:21,851 INFO L78 Accepts]: Start accepts. Automaton has 163044 states and 222835 transitions. Word has length 10141 [2022-12-13 13:32:21,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:32:21,852 INFO L495 AbstractCegarLoop]: Abstraction has 163044 states and 222835 transitions. [2022-12-13 13:32:21,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3379.3333333333335) internal successors, (10138), 2 states have internal predecessors, (10138), 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 13:32:21,853 INFO L276 IsEmpty]: Start isEmpty. Operand 163044 states and 222835 transitions. [2022-12-13 13:32:22,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10152 [2022-12-13 13:32:22,618 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:32:22,621 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:32:22,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:32:22,621 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:32:22,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:32:22,624 INFO L85 PathProgramCache]: Analyzing trace with hash 335294666, now seen corresponding path program 1 times [2022-12-13 13:32:22,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:32:22,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347926470] [2022-12-13 13:32:22,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:32:22,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:32:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:32:48,565 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:32:48,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:32:48,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347926470] [2022-12-13 13:32:48,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347926470] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:32:48,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:32:48,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:32:48,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342560391] [2022-12-13 13:32:48,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:32:48,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:32:48,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:32:48,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:32:48,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:32:48,581 INFO L87 Difference]: Start difference. First operand 163044 states and 222835 transitions. Second operand has 3 states, 3 states have (on average 3383.6666666666665) internal successors, (10151), 2 states have internal predecessors, (10151), 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 13:33:17,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:33:17,687 INFO L93 Difference]: Finished difference Result 407606 states and 548036 transitions. [2022-12-13 13:33:17,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:33:17,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3383.6666666666665) internal successors, (10151), 2 states have internal predecessors, (10151), 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 10151 [2022-12-13 13:33:17,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:33:17,944 INFO L225 Difference]: With dead ends: 407606 [2022-12-13 13:33:17,944 INFO L226 Difference]: Without dead ends: 244564 [2022-12-13 13:33:17,994 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 13:33:17,995 INFO L413 NwaCegarLoop]: 9643 mSDtfsCounter, 10411 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29399 mSolverCounterSat, 7489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10411 SdHoareTripleChecker+Valid, 9692 SdHoareTripleChecker+Invalid, 36888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7489 IncrementalHoareTripleChecker+Valid, 29399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.8s IncrementalHoareTripleChecker+Time [2022-12-13 13:33:17,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10411 Valid, 9692 Invalid, 36888 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7489 Valid, 29399 Invalid, 0 Unknown, 0 Unchecked, 27.8s Time] [2022-12-13 13:33:18,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244564 states. [2022-12-13 13:33:19,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244564 to 244564. [2022-12-13 13:33:19,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244564 states, 244563 states have (on average 1.2861348609560728) internal successors, (314541), 244563 states have internal predecessors, (314541), 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 13:33:20,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244564 states to 244564 states and 314541 transitions. [2022-12-13 13:33:20,213 INFO L78 Accepts]: Start accepts. Automaton has 244564 states and 314541 transitions. Word has length 10151 [2022-12-13 13:33:20,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:33:20,214 INFO L495 AbstractCegarLoop]: Abstraction has 244564 states and 314541 transitions. [2022-12-13 13:33:20,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3383.6666666666665) internal successors, (10151), 2 states have internal predecessors, (10151), 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 13:33:20,216 INFO L276 IsEmpty]: Start isEmpty. Operand 244564 states and 314541 transitions. [2022-12-13 13:33:21,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10168 [2022-12-13 13:33:21,210 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:33:21,212 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:21,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 13:33:21,212 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:33:21,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:33:21,214 INFO L85 PathProgramCache]: Analyzing trace with hash -853331806, now seen corresponding path program 1 times [2022-12-13 13:33:21,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:33:21,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016168032] [2022-12-13 13:33:21,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:33:21,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:33:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:41,765 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:33:41,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:33:41,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016168032] [2022-12-13 13:33:41,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016168032] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:33:41,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:33:41,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:33:41,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140601951] [2022-12-13 13:33:41,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:33:41,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:33:41,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:33:41,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:33:41,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:33:41,926 INFO L87 Difference]: Start difference. First operand 244564 states and 314541 transitions. Second operand has 3 states, 3 states have (on average 3389.0) internal successors, (10167), 2 states have internal predecessors, (10167), 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 13:34:14,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:34:14,513 INFO L93 Difference]: Finished difference Result 733686 states and 943618 transitions. [2022-12-13 13:34:14,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:34:14,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3389.0) internal successors, (10167), 2 states have internal predecessors, (10167), 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 10167 [2022-12-13 13:34:14,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:34:15,099 INFO L225 Difference]: With dead ends: 733686 [2022-12-13 13:34:15,100 INFO L226 Difference]: Without dead ends: 489124 [2022-12-13 13:34:15,221 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 13:34:15,222 INFO L413 NwaCegarLoop]: 5700 mSDtfsCounter, 13739 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27430 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13739 SdHoareTripleChecker+Valid, 5749 SdHoareTripleChecker+Invalid, 40460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.4s IncrementalHoareTripleChecker+Time [2022-12-13 13:34:15,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13739 Valid, 5749 Invalid, 40460 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27430 Invalid, 0 Unknown, 0 Unchecked, 30.4s Time] [2022-12-13 13:34:15,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489124 states. [2022-12-13 13:34:18,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489124 to 489124. [2022-12-13 13:34:19,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489124 states, 489123 states have (on average 1.2033353573640986) internal successors, (588579), 489123 states have internal predecessors, (588579), 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 13:34:19,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489124 states to 489124 states and 588579 transitions. [2022-12-13 13:34:19,901 INFO L78 Accepts]: Start accepts. Automaton has 489124 states and 588579 transitions. Word has length 10167 [2022-12-13 13:34:19,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:34:19,905 INFO L495 AbstractCegarLoop]: Abstraction has 489124 states and 588579 transitions. [2022-12-13 13:34:19,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3389.0) internal successors, (10167), 2 states have internal predecessors, (10167), 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 13:34:19,908 INFO L276 IsEmpty]: Start isEmpty. Operand 489124 states and 588579 transitions. [2022-12-13 13:34:21,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10271 [2022-12-13 13:34:21,119 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:34:21,121 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:21,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 13:34:21,121 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:34:21,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:34:21,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1936160130, now seen corresponding path program 1 times [2022-12-13 13:34:21,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:34:21,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325264383] [2022-12-13 13:34:21,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:34:21,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:34:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:34:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:34:42,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:34:42,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325264383] [2022-12-13 13:34:42,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325264383] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:34:42,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:34:42,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:34:42,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032969869] [2022-12-13 13:34:42,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:34:42,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:34:42,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:34:42,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:34:42,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:34:42,078 INFO L87 Difference]: Start difference. First operand 489124 states and 588579 transitions. Second operand has 3 states, 3 states have (on average 3423.3333333333335) internal successors, (10270), 2 states have internal predecessors, (10270), 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 13:35:16,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:35:16,962 INFO L93 Difference]: Finished difference Result 1467366 states and 1765732 transitions. [2022-12-13 13:35:16,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:35:16,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3423.3333333333335) internal successors, (10270), 2 states have internal predecessors, (10270), 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 10270 [2022-12-13 13:35:16,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:35:18,088 INFO L225 Difference]: With dead ends: 1467366 [2022-12-13 13:35:18,088 INFO L226 Difference]: Without dead ends: 978244 [2022-12-13 13:35:18,249 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 13:35:18,250 INFO L413 NwaCegarLoop]: 7703 mSDtfsCounter, 11600 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 31179 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11600 SdHoareTripleChecker+Valid, 7752 SdHoareTripleChecker+Invalid, 41680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 31179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.8s IncrementalHoareTripleChecker+Time [2022-12-13 13:35:18,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11600 Valid, 7752 Invalid, 41680 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10501 Valid, 31179 Invalid, 0 Unknown, 0 Unchecked, 30.8s Time] [2022-12-13 13:35:18,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978244 states. [2022-12-13 13:35:25,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978244 to 978244. [2022-12-13 13:35:26,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978244 states, 978243 states have (on average 1.154575090238315) internal successors, (1129455), 978243 states have internal predecessors, (1129455), 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 13:35:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978244 states to 978244 states and 1129455 transitions. [2022-12-13 13:35:28,062 INFO L78 Accepts]: Start accepts. Automaton has 978244 states and 1129455 transitions. Word has length 10270 [2022-12-13 13:35:28,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:35:28,063 INFO L495 AbstractCegarLoop]: Abstraction has 978244 states and 1129455 transitions. [2022-12-13 13:35:28,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3423.3333333333335) internal successors, (10270), 2 states have internal predecessors, (10270), 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 13:35:28,065 INFO L276 IsEmpty]: Start isEmpty. Operand 978244 states and 1129455 transitions. [2022-12-13 13:35:29,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10576 [2022-12-13 13:35:29,963 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:35:29,965 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:29,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 13:35:29,965 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:35:29,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:35:29,967 INFO L85 PathProgramCache]: Analyzing trace with hash 314689461, now seen corresponding path program 1 times [2022-12-13 13:35:29,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:35:29,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918219902] [2022-12-13 13:35:29,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:35:29,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:35:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:35:52,742 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2022-12-13 13:35:52,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:35:52,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918219902] [2022-12-13 13:35:52,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918219902] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:35:52,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:35:52,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:35:52,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849481147] [2022-12-13 13:35:52,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:35:52,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:35:52,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:35:52,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:35:52,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:35:52,753 INFO L87 Difference]: Start difference. First operand 978244 states and 1129455 transitions. Second operand has 3 states, 3 states have (on average 3473.0) internal successors, (10419), 2 states have internal predecessors, (10419), 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 13:36:29,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:36:29,186 INFO L93 Difference]: Finished difference Result 2445606 states and 2808118 transitions. [2022-12-13 13:36:29,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:36:29,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3473.0) internal successors, (10419), 2 states have internal predecessors, (10419), 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 10575 [2022-12-13 13:36:29,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:36:30,932 INFO L225 Difference]: With dead ends: 2445606 [2022-12-13 13:36:30,933 INFO L226 Difference]: Without dead ends: 1467364 [2022-12-13 13:36:31,425 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 13:36:31,425 INFO L413 NwaCegarLoop]: 5131 mSDtfsCounter, 10928 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30114 mSolverCounterSat, 10732 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10928 SdHoareTripleChecker+Valid, 5180 SdHoareTripleChecker+Invalid, 40846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10732 IncrementalHoareTripleChecker+Valid, 30114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time [2022-12-13 13:36:31,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10928 Valid, 5180 Invalid, 40846 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10732 Valid, 30114 Invalid, 0 Unknown, 0 Unchecked, 30.3s Time] [2022-12-13 13:36:32,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467364 states. [2022-12-13 13:36:43,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467364 to 1467364. [2022-12-13 13:36:44,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1467364 states, 1467363 states have (on average 1.099439606968419) internal successors, (1613277), 1467363 states have internal predecessors, (1613277), 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 13:36:46,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467364 states to 1467364 states and 1613277 transitions. [2022-12-13 13:36:46,254 INFO L78 Accepts]: Start accepts. Automaton has 1467364 states and 1613277 transitions. Word has length 10575 [2022-12-13 13:36:46,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:36:46,254 INFO L495 AbstractCegarLoop]: Abstraction has 1467364 states and 1613277 transitions. [2022-12-13 13:36:46,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3473.0) internal successors, (10419), 2 states have internal predecessors, (10419), 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 13:36:46,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1467364 states and 1613277 transitions. [2022-12-13 13:36:48,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10577 [2022-12-13 13:36:48,561 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:36:48,563 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:36:48,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 13:36:48,563 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:36:48,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:36:48,564 INFO L85 PathProgramCache]: Analyzing trace with hash 2146420998, now seen corresponding path program 1 times [2022-12-13 13:36:48,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:36:48,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957046460] [2022-12-13 13:36:48,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:36:48,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:36:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:17,908 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 443 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 13:37:17,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:37:17,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957046460] [2022-12-13 13:37:17,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957046460] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:37:17,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:37:17,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:37:17,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460525801] [2022-12-13 13:37:17,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:37:17,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:37:17,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:37:17,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:37:17,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:37:17,928 INFO L87 Difference]: Start difference. First operand 1467364 states and 1613277 transitions. Second operand has 3 states, 3 states have (on average 3518.6666666666665) internal successors, (10556), 2 states have internal predecessors, (10556), 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 13:37:50,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:37:50,355 INFO L93 Difference]: Finished difference Result 2934726 states and 3226552 transitions. [2022-12-13 13:37:50,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:37:50,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3518.6666666666665) internal successors, (10556), 2 states have internal predecessors, (10556), 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 10576 [2022-12-13 13:37:50,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:37:52,158 INFO L225 Difference]: With dead ends: 2934726 [2022-12-13 13:37:52,158 INFO L226 Difference]: Without dead ends: 1467364 [2022-12-13 13:37:52,503 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 13:37:52,503 INFO L413 NwaCegarLoop]: 9969 mSDtfsCounter, 9850 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30717 mSolverCounterSat, 3970 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9850 SdHoareTripleChecker+Valid, 10018 SdHoareTripleChecker+Invalid, 34687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3970 IncrementalHoareTripleChecker+Valid, 30717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time [2022-12-13 13:37:52,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9850 Valid, 10018 Invalid, 34687 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3970 Valid, 30717 Invalid, 0 Unknown, 0 Unchecked, 25.6s Time] [2022-12-13 13:37:53,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467364 states.