./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbae174-d644-4577-b76f-129567c022fc/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbae174-d644-4577-b76f-129567c022fc/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_4bbae174-d644-4577-b76f-129567c022fc/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbae174-d644-4577-b76f-129567c022fc/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbae174-d644-4577-b76f-129567c022fc/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_4bbae174-d644-4577-b76f-129567c022fc/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 695981a417316c4c07ccb52b1c4d12f1832a3ea99763b6fdb28c03b28d3203ad --- 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 20:47:34,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:47:34,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:47:34,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:47:34,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:47:34,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:47:34,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:47:34,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:47:34,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:47:34,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:47:34,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:47:34,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:47:34,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:47:34,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:47:34,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:47:34,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:47:34,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:47:34,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:47:34,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:47:34,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:47:34,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:47:34,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:47:34,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:47:34,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:47:34,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:47:34,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:47:34,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:47:34,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:47:34,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:47:34,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:47:34,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:47:34,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:47:34,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:47:34,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:47:34,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:47:34,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:47:34,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:47:34,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:47:34,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:47:34,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:47:34,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:47:34,372 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbae174-d644-4577-b76f-129567c022fc/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 20:47:34,390 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:47:34,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:47:34,391 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:47:34,391 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:47:34,391 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:47:34,391 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:47:34,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:47:34,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:47:34,392 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:47:34,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:47:34,392 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:47:34,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:47:34,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:47:34,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:47:34,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:47:34,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:47:34,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:47:34,393 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:47:34,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:47:34,393 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:47:34,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:47:34,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:47:34,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:47:34,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:47:34,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:47:34,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:47:34,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:47:34,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:47:34,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:47:34,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:47:34,395 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:47:34,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:47:34,395 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:47:34,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:47:34,395 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:47:34,395 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_4bbae174-d644-4577-b76f-129567c022fc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbae174-d644-4577-b76f-129567c022fc/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 695981a417316c4c07ccb52b1c4d12f1832a3ea99763b6fdb28c03b28d3203ad [2022-12-13 20:47:34,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:47:34,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:47:34,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:47:34,608 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:47:34,609 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:47:34,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbae174-d644-4577-b76f-129567c022fc/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c [2022-12-13 20:47:37,246 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:47:37,708 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:47:37,709 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbae174-d644-4577-b76f-129567c022fc/sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c [2022-12-13 20:47:37,748 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbae174-d644-4577-b76f-129567c022fc/bin/uautomizer-uyxdKDjOR8/data/e7b8eb1a0/29203ffb7cd54657b18f7944a2a0ce46/FLAG3052095d7 [2022-12-13 20:47:37,759 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbae174-d644-4577-b76f-129567c022fc/bin/uautomizer-uyxdKDjOR8/data/e7b8eb1a0/29203ffb7cd54657b18f7944a2a0ce46 [2022-12-13 20:47:37,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:47:37,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:47:37,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:47:37,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:47:37,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:47:37,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:47:37" (1/1) ... [2022-12-13 20:47:37,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35c55863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:47:37, skipping insertion in model container [2022-12-13 20:47:37,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:47:37" (1/1) ... [2022-12-13 20:47:37,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:47:37,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:47:39,497 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_4bbae174-d644-4577-b76f-129567c022fc/sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c[378560,378573] [2022-12-13 20:47:39,524 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_4bbae174-d644-4577-b76f-129567c022fc/sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c[383339,383352] [2022-12-13 20:47:39,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:47:39,758 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:47:40,697 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_4bbae174-d644-4577-b76f-129567c022fc/sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c[378560,378573] [2022-12-13 20:47:40,703 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_4bbae174-d644-4577-b76f-129567c022fc/sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c[383339,383352] [2022-12-13 20:47:40,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:47:40,756 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:47:40,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:47:40 WrapperNode [2022-12-13 20:47:40,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:47:40,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:47:40,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:47:40,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:47:40,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:47:40" (1/1) ... [2022-12-13 20:47:40,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:47:40" (1/1) ... [2022-12-13 20:47:41,092 INFO L138 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 13030 [2022-12-13 20:47:41,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:47:41,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:47:41,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:47:41,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:47:41,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:47:40" (1/1) ... [2022-12-13 20:47:41,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:47:40" (1/1) ... [2022-12-13 20:47:41,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:47:40" (1/1) ... [2022-12-13 20:47:41,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:47:40" (1/1) ... [2022-12-13 20:47:41,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:47:40" (1/1) ... [2022-12-13 20:47:41,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:47:40" (1/1) ... [2022-12-13 20:47:41,340 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:47:40" (1/1) ... [2022-12-13 20:47:41,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:47:40" (1/1) ... [2022-12-13 20:47:41,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:47:41,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:47:41,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:47:41,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:47:41,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:47:40" (1/1) ... [2022-12-13 20:47:41,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:47:41,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbae174-d644-4577-b76f-129567c022fc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:47:41,408 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbae174-d644-4577-b76f-129567c022fc/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:47:41,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bbae174-d644-4577-b76f-129567c022fc/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:47:41,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:47:41,454 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-12-13 20:47:41,454 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-12-13 20:47:41,454 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-13 20:47:41,454 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-13 20:47:41,454 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-12-13 20:47:41,455 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-12-13 20:47:41,455 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-12-13 20:47:41,455 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-12-13 20:47:41,455 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-12-13 20:47:41,455 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-12-13 20:47:41,455 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-12-13 20:47:41,455 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-12-13 20:47:41,455 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-12-13 20:47:41,456 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-12-13 20:47:41,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:47:41,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:47:41,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:47:41,591 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:47:41,593 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:47:47,507 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:47:47,538 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:47:47,539 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-12-13 20:47:47,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:47:47 BoogieIcfgContainer [2022-12-13 20:47:47,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:47:47,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:47:47,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:47:47,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:47:47,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:47:37" (1/3) ... [2022-12-13 20:47:47,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2fa442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:47:47, skipping insertion in model container [2022-12-13 20:47:47,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:47:40" (2/3) ... [2022-12-13 20:47:47,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2fa442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:47:47, skipping insertion in model container [2022-12-13 20:47:47,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:47:47" (3/3) ... [2022-12-13 20:47:47,553 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.09.cil-2.c [2022-12-13 20:47:47,567 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:47:47,567 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 20:47:47,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:47:47,658 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;@56dafaac, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:47:47,658 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 20:47:47,672 INFO L276 IsEmpty]: Start isEmpty. Operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-12-13 20:47:47,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 20:47:47,695 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:47:47,695 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] [2022-12-13 20:47:47,696 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:47:47,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:47:47,701 INFO L85 PathProgramCache]: Analyzing trace with hash 416596476, now seen corresponding path program 1 times [2022-12-13 20:47:47,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:47:47,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167147919] [2022-12-13 20:47:47,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:47:47,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:47:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:47,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:47:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:47,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 20:47:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:48,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 20:47:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:48,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 20:47:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:48,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 20:47:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:48,088 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 20:47:48,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:47:48,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167147919] [2022-12-13 20:47:48,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167147919] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:47:48,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:47:48,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:47:48,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023792586] [2022-12-13 20:47:48,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:47:48,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:47:48,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:47:48,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:47:48,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:47:48,133 INFO L87 Difference]: Start difference. First operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:47:49,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:47:49,494 INFO L93 Difference]: Finished difference Result 5096 states and 9373 transitions. [2022-12-13 20:47:49,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:47:49,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 20:47:49,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:47:49,519 INFO L225 Difference]: With dead ends: 5096 [2022-12-13 20:47:49,519 INFO L226 Difference]: Without dead ends: 2539 [2022-12-13 20:47:49,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:47:49,530 INFO L413 NwaCegarLoop]: 4315 mSDtfsCounter, 825 mSDsluCounter, 12405 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 16720 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:47:49,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 16720 Invalid, 860 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 20:47:49,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2022-12-13 20:47:49,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2430. [2022-12-13 20:47:49,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 2397 states have (on average 1.8327075511055486) internal successors, (4393), 2400 states have internal predecessors, (4393), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-12-13 20:47:49,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 4441 transitions. [2022-12-13 20:47:49,660 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 4441 transitions. Word has length 146 [2022-12-13 20:47:49,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:47:49,660 INFO L495 AbstractCegarLoop]: Abstraction has 2430 states and 4441 transitions. [2022-12-13 20:47:49,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:47:49,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 4441 transitions. [2022-12-13 20:47:49,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 20:47:49,664 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:47:49,664 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] [2022-12-13 20:47:49,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:47:49,665 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:47:49,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:47:49,666 INFO L85 PathProgramCache]: Analyzing trace with hash -982357126, now seen corresponding path program 1 times [2022-12-13 20:47:49,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:47:49,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617541148] [2022-12-13 20:47:49,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:47:49,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:47:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:49,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:47:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:49,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 20:47:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:49,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 20:47:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:49,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 20:47:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:49,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 20:47:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:49,914 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 20:47:49,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:47:49,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617541148] [2022-12-13 20:47:49,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617541148] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:47:49,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:47:49,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 20:47:49,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781493852] [2022-12-13 20:47:49,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:47:49,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:47:49,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:47:49,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:47:49,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:47:49,917 INFO L87 Difference]: Start difference. First operand 2430 states and 4441 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:47:52,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:47:52,150 INFO L93 Difference]: Finished difference Result 3244 states and 5752 transitions. [2022-12-13 20:47:52,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 20:47:52,151 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 20:47:52,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:47:52,162 INFO L225 Difference]: With dead ends: 3244 [2022-12-13 20:47:52,162 INFO L226 Difference]: Without dead ends: 2952 [2022-12-13 20:47:52,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:47:52,165 INFO L413 NwaCegarLoop]: 4251 mSDtfsCounter, 5189 mSDsluCounter, 12667 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5205 SdHoareTripleChecker+Valid, 16918 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 20:47:52,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5205 Valid, 16918 Invalid, 1962 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 1858 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 20:47:52,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2022-12-13 20:47:52,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2733. [2022-12-13 20:47:52,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2675 states have (on average 1.8078504672897195) internal successors, (4836), 2679 states have internal predecessors, (4836), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-12-13 20:47:52,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4923 transitions. [2022-12-13 20:47:52,247 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4923 transitions. Word has length 146 [2022-12-13 20:47:52,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:47:52,248 INFO L495 AbstractCegarLoop]: Abstraction has 2733 states and 4923 transitions. [2022-12-13 20:47:52,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:47:52,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4923 transitions. [2022-12-13 20:47:52,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 20:47:52,251 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:47:52,251 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] [2022-12-13 20:47:52,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:47:52,252 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:47:52,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:47:52,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1511144566, now seen corresponding path program 1 times [2022-12-13 20:47:52,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:47:52,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432358093] [2022-12-13 20:47:52,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:47:52,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:47:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:52,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:47:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:52,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 20:47:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:52,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 20:47:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:52,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 20:47:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:52,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 20:47:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:52,480 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 20:47:52,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:47:52,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432358093] [2022-12-13 20:47:52,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432358093] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:47:52,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:47:52,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:47:52,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036748131] [2022-12-13 20:47:52,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:47:52,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:47:52,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:47:52,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:47:52,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:47:52,483 INFO L87 Difference]: Start difference. First operand 2733 states and 4923 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:47:54,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:47:54,710 INFO L93 Difference]: Finished difference Result 3972 states and 6919 transitions. [2022-12-13 20:47:54,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 20:47:54,711 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 20:47:54,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:47:54,719 INFO L225 Difference]: With dead ends: 3972 [2022-12-13 20:47:54,719 INFO L226 Difference]: Without dead ends: 3377 [2022-12-13 20:47:54,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:47:54,722 INFO L413 NwaCegarLoop]: 4423 mSDtfsCounter, 5218 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2809 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5234 SdHoareTripleChecker+Valid, 21826 SdHoareTripleChecker+Invalid, 2870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 20:47:54,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5234 Valid, 21826 Invalid, 2870 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 2809 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 20:47:54,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2022-12-13 20:47:54,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 3015. [2022-12-13 20:47:54,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 2932 states have (on average 1.7861527967257844) internal successors, (5237), 2937 states have internal predecessors, (5237), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-12-13 20:47:54,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 5362 transitions. [2022-12-13 20:47:54,805 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 5362 transitions. Word has length 146 [2022-12-13 20:47:54,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:47:54,805 INFO L495 AbstractCegarLoop]: Abstraction has 3015 states and 5362 transitions. [2022-12-13 20:47:54,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:47:54,805 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 5362 transitions. [2022-12-13 20:47:54,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 20:47:54,807 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:47:54,807 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] [2022-12-13 20:47:54,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:47:54,807 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:47:54,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:47:54,808 INFO L85 PathProgramCache]: Analyzing trace with hash 804547960, now seen corresponding path program 1 times [2022-12-13 20:47:54,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:47:54,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046685459] [2022-12-13 20:47:54,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:47:54,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:47:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:54,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:47:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:54,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 20:47:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:54,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 20:47:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:54,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 20:47:54,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:55,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 20:47:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:55,005 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 20:47:55,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:47:55,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046685459] [2022-12-13 20:47:55,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046685459] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:47:55,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:47:55,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:47:55,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727232437] [2022-12-13 20:47:55,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:47:55,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:47:55,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:47:55,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:47:55,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:47:55,008 INFO L87 Difference]: Start difference. First operand 3015 states and 5362 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:47:57,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:47:57,256 INFO L93 Difference]: Finished difference Result 5044 states and 8626 transitions. [2022-12-13 20:47:57,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 20:47:57,257 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 20:47:57,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:47:57,273 INFO L225 Difference]: With dead ends: 5044 [2022-12-13 20:47:57,273 INFO L226 Difference]: Without dead ends: 4167 [2022-12-13 20:47:57,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:47:57,279 INFO L413 NwaCegarLoop]: 4421 mSDtfsCounter, 5212 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2788 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5228 SdHoareTripleChecker+Valid, 21824 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 20:47:57,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5228 Valid, 21824 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2788 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 20:47:57,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2022-12-13 20:47:57,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 3583. [2022-12-13 20:47:57,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3450 states have (on average 1.752463768115942) internal successors, (6046), 3457 states have internal predecessors, (6046), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-12-13 20:47:57,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 6251 transitions. [2022-12-13 20:47:57,438 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 6251 transitions. Word has length 146 [2022-12-13 20:47:57,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:47:57,439 INFO L495 AbstractCegarLoop]: Abstraction has 3583 states and 6251 transitions. [2022-12-13 20:47:57,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:47:57,439 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 6251 transitions. [2022-12-13 20:47:57,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 20:47:57,441 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:47:57,441 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] [2022-12-13 20:47:57,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:47:57,441 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:47:57,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:47:57,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1666381562, now seen corresponding path program 1 times [2022-12-13 20:47:57,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:47:57,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595609431] [2022-12-13 20:47:57,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:47:57,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:47:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:57,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:47:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:57,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 20:47:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:57,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 20:47:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:57,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 20:47:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:57,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 20:47:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:47:57,603 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 20:47:57,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:47:57,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595609431] [2022-12-13 20:47:57,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595609431] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:47:57,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:47:57,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:47:57,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221486872] [2022-12-13 20:47:57,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:47:57,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:47:57,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:47:57,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:47:57,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:47:57,606 INFO L87 Difference]: Start difference. First operand 3583 states and 6251 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:48:00,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:48:00,127 INFO L93 Difference]: Finished difference Result 7114 states and 11903 transitions. [2022-12-13 20:48:00,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 20:48:00,128 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 20:48:00,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:48:00,140 INFO L225 Difference]: With dead ends: 7114 [2022-12-13 20:48:00,140 INFO L226 Difference]: Without dead ends: 5669 [2022-12-13 20:48:00,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:48:00,145 INFO L413 NwaCegarLoop]: 4421 mSDtfsCounter, 5211 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2775 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5227 SdHoareTripleChecker+Valid, 21824 SdHoareTripleChecker+Invalid, 2838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 20:48:00,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5227 Valid, 21824 Invalid, 2838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2775 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 20:48:00,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2022-12-13 20:48:00,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 4720. [2022-12-13 20:48:00,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4720 states, 4487 states have (on average 1.70804546467573) internal successors, (7664), 4498 states have internal predecessors, (7664), 169 states have call successors, (169), 55 states have call predecessors, (169), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-12-13 20:48:00,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 8035 transitions. [2022-12-13 20:48:00,339 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 8035 transitions. Word has length 146 [2022-12-13 20:48:00,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:48:00,340 INFO L495 AbstractCegarLoop]: Abstraction has 4720 states and 8035 transitions. [2022-12-13 20:48:00,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:48:00,340 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 8035 transitions. [2022-12-13 20:48:00,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 20:48:00,342 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:48:00,342 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] [2022-12-13 20:48:00,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 20:48:00,342 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:48:00,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:48:00,343 INFO L85 PathProgramCache]: Analyzing trace with hash -384027336, now seen corresponding path program 1 times [2022-12-13 20:48:00,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:48:00,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682157699] [2022-12-13 20:48:00,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:48:00,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:48:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:00,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:48:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:00,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 20:48:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:00,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 20:48:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:00,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 20:48:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:00,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 20:48:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:00,494 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 20:48:00,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:48:00,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682157699] [2022-12-13 20:48:00,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682157699] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:48:00,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:48:00,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:48:00,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222536840] [2022-12-13 20:48:00,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:48:00,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:48:00,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:48:00,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:48:00,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:48:00,497 INFO L87 Difference]: Start difference. First operand 4720 states and 8035 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:48:03,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:48:03,550 INFO L93 Difference]: Finished difference Result 11253 states and 18473 transitions. [2022-12-13 20:48:03,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 20:48:03,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 20:48:03,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:48:03,571 INFO L225 Difference]: With dead ends: 11253 [2022-12-13 20:48:03,571 INFO L226 Difference]: Without dead ends: 8671 [2022-12-13 20:48:03,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:48:03,579 INFO L413 NwaCegarLoop]: 4421 mSDtfsCounter, 5210 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2762 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5226 SdHoareTripleChecker+Valid, 21824 SdHoareTripleChecker+Invalid, 2825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:48:03,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5226 Valid, 21824 Invalid, 2825 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 2762 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 20:48:03,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8671 states. [2022-12-13 20:48:03,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8671 to 7001. [2022-12-13 20:48:04,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 6568 states have (on average 1.6610840438489647) internal successors, (10910), 6587 states have internal predecessors, (10910), 313 states have call successors, (313), 103 states have call predecessors, (313), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-12-13 20:48:04,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 11631 transitions. [2022-12-13 20:48:04,013 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 11631 transitions. Word has length 146 [2022-12-13 20:48:04,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:48:04,013 INFO L495 AbstractCegarLoop]: Abstraction has 7001 states and 11631 transitions. [2022-12-13 20:48:04,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:48:04,014 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 11631 transitions. [2022-12-13 20:48:04,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 20:48:04,017 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:48:04,017 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] [2022-12-13 20:48:04,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 20:48:04,017 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:48:04,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:48:04,017 INFO L85 PathProgramCache]: Analyzing trace with hash 104019770, now seen corresponding path program 1 times [2022-12-13 20:48:04,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:48:04,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150228628] [2022-12-13 20:48:04,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:48:04,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:48:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:04,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:48:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:04,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 20:48:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:04,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 20:48:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:04,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 20:48:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:04,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 20:48:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:04,160 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 20:48:04,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:48:04,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150228628] [2022-12-13 20:48:04,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150228628] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:48:04,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:48:04,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:48:04,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876737723] [2022-12-13 20:48:04,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:48:04,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:48:04,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:48:04,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:48:04,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:48:04,162 INFO L87 Difference]: Start difference. First operand 7001 states and 11631 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:48:07,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:48:07,625 INFO L93 Difference]: Finished difference Result 19532 states and 31675 transitions. [2022-12-13 20:48:07,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 20:48:07,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 20:48:07,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:48:07,657 INFO L225 Difference]: With dead ends: 19532 [2022-12-13 20:48:07,658 INFO L226 Difference]: Without dead ends: 14669 [2022-12-13 20:48:07,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:48:07,668 INFO L413 NwaCegarLoop]: 4256 mSDtfsCounter, 5291 mSDsluCounter, 16867 mSDsCounter, 0 mSdLazyCounter, 2452 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5307 SdHoareTripleChecker+Valid, 21123 SdHoareTripleChecker+Invalid, 2547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:48:07,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5307 Valid, 21123 Invalid, 2547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2452 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 20:48:07,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14669 states. [2022-12-13 20:48:08,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14669 to 11578. [2022-12-13 20:48:08,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.621591437878083) internal successors, (17424), 10780 states have internal predecessors, (17424), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-12-13 20:48:08,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18899 transitions. [2022-12-13 20:48:08,434 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18899 transitions. Word has length 146 [2022-12-13 20:48:08,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:48:08,434 INFO L495 AbstractCegarLoop]: Abstraction has 11578 states and 18899 transitions. [2022-12-13 20:48:08,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:48:08,435 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18899 transitions. [2022-12-13 20:48:08,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 20:48:08,439 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:48:08,439 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] [2022-12-13 20:48:08,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 20:48:08,439 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:48:08,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:48:08,440 INFO L85 PathProgramCache]: Analyzing trace with hash -988615432, now seen corresponding path program 1 times [2022-12-13 20:48:08,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:48:08,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934003690] [2022-12-13 20:48:08,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:48:08,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:48:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:08,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:48:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:08,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 20:48:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:08,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 20:48:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:08,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 20:48:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:08,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 20:48:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:08,581 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 20:48:08,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:48:08,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934003690] [2022-12-13 20:48:08,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934003690] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:48:08,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:48:08,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:48:08,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556464922] [2022-12-13 20:48:08,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:48:08,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:48:08,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:48:08,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:48:08,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:48:08,583 INFO L87 Difference]: Start difference. First operand 11578 states and 18899 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:48:10,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:48:10,851 INFO L93 Difference]: Finished difference Result 24276 states and 39482 transitions. [2022-12-13 20:48:10,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:48:10,851 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 20:48:10,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:48:10,879 INFO L225 Difference]: With dead ends: 24276 [2022-12-13 20:48:10,879 INFO L226 Difference]: Without dead ends: 14836 [2022-12-13 20:48:10,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:48:10,895 INFO L413 NwaCegarLoop]: 4207 mSDtfsCounter, 4998 mSDsluCounter, 12485 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5015 SdHoareTripleChecker+Valid, 16692 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 20:48:10,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5015 Valid, 16692 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 20:48:10,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14836 states. [2022-12-13 20:48:11,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14836 to 11578. [2022-12-13 20:48:11,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.6185202419730107) internal successors, (17391), 10780 states have internal predecessors, (17391), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-12-13 20:48:11,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18866 transitions. [2022-12-13 20:48:11,779 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18866 transitions. Word has length 146 [2022-12-13 20:48:11,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:48:11,780 INFO L495 AbstractCegarLoop]: Abstraction has 11578 states and 18866 transitions. [2022-12-13 20:48:11,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:48:11,780 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18866 transitions. [2022-12-13 20:48:11,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 20:48:11,784 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:48:11,784 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] [2022-12-13 20:48:11,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 20:48:11,785 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:48:11,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:48:11,785 INFO L85 PathProgramCache]: Analyzing trace with hash 2024179578, now seen corresponding path program 1 times [2022-12-13 20:48:11,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:48:11,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816401650] [2022-12-13 20:48:11,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:48:11,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:48:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:11,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:48:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:11,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 20:48:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:11,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 20:48:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:11,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 20:48:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:11,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 20:48:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:11,924 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 20:48:11,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:48:11,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816401650] [2022-12-13 20:48:11,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816401650] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:48:11,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:48:11,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:48:11,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421723548] [2022-12-13 20:48:11,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:48:11,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:48:11,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:48:11,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:48:11,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:48:11,926 INFO L87 Difference]: Start difference. First operand 11578 states and 18866 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:48:16,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:48:16,902 INFO L93 Difference]: Finished difference Result 36057 states and 58041 transitions. [2022-12-13 20:48:16,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 20:48:16,903 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 20:48:16,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:48:16,968 INFO L225 Difference]: With dead ends: 36057 [2022-12-13 20:48:16,968 INFO L226 Difference]: Without dead ends: 26617 [2022-12-13 20:48:16,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:48:16,992 INFO L413 NwaCegarLoop]: 4421 mSDtfsCounter, 5201 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2711 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5217 SdHoareTripleChecker+Valid, 21824 SdHoareTripleChecker+Invalid, 2774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:48:16,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5217 Valid, 21824 Invalid, 2774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2711 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 20:48:17,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26617 states. [2022-12-13 20:48:18,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26617 to 20796. [2022-12-13 20:48:18,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20796 states, 19163 states have (on average 1.5898867609455722) internal successors, (30467), 19230 states have internal predecessors, (30467), 1177 states have call successors, (1177), 391 states have call predecessors, (1177), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2022-12-13 20:48:18,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20796 states to 20796 states and 33612 transitions. [2022-12-13 20:48:18,668 INFO L78 Accepts]: Start accepts. Automaton has 20796 states and 33612 transitions. Word has length 146 [2022-12-13 20:48:18,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:48:18,669 INFO L495 AbstractCegarLoop]: Abstraction has 20796 states and 33612 transitions. [2022-12-13 20:48:18,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:48:18,669 INFO L276 IsEmpty]: Start isEmpty. Operand 20796 states and 33612 transitions. [2022-12-13 20:48:18,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 20:48:18,676 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:48:18,677 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] [2022-12-13 20:48:18,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 20:48:18,677 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:48:18,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:48:18,677 INFO L85 PathProgramCache]: Analyzing trace with hash 181703864, now seen corresponding path program 1 times [2022-12-13 20:48:18,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:48:18,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071821617] [2022-12-13 20:48:18,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:48:18,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:48:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:18,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:48:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:18,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 20:48:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:18,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 20:48:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:18,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 20:48:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:18,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 20:48:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:18,809 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 20:48:18,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:48:18,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071821617] [2022-12-13 20:48:18,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071821617] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:48:18,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:48:18,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:48:18,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153945647] [2022-12-13 20:48:18,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:48:18,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:48:18,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:48:18,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:48:18,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:48:18,811 INFO L87 Difference]: Start difference. First operand 20796 states and 33612 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:48:25,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:48:25,901 INFO L93 Difference]: Finished difference Result 69177 states and 111649 transitions. [2022-12-13 20:48:25,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 20:48:25,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 20:48:25,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:48:26,023 INFO L225 Difference]: With dead ends: 69177 [2022-12-13 20:48:26,023 INFO L226 Difference]: Without dead ends: 50519 [2022-12-13 20:48:26,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:48:26,065 INFO L413 NwaCegarLoop]: 4421 mSDtfsCounter, 5206 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2693 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5222 SdHoareTripleChecker+Valid, 21824 SdHoareTripleChecker+Invalid, 2756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 20:48:26,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5222 Valid, 21824 Invalid, 2756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2693 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 20:48:26,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50519 states. [2022-12-13 20:48:29,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50519 to 39293. [2022-12-13 20:48:29,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39293 states, 36060 states have (on average 1.5726289517470882) internal successors, (56709), 36191 states have internal predecessors, (56709), 2329 states have call successors, (2329), 775 states have call predecessors, (2329), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2022-12-13 20:48:29,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39293 states to 39293 states and 63680 transitions. [2022-12-13 20:48:29,598 INFO L78 Accepts]: Start accepts. Automaton has 39293 states and 63680 transitions. Word has length 146 [2022-12-13 20:48:29,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:48:29,598 INFO L495 AbstractCegarLoop]: Abstraction has 39293 states and 63680 transitions. [2022-12-13 20:48:29,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:48:29,599 INFO L276 IsEmpty]: Start isEmpty. Operand 39293 states and 63680 transitions. [2022-12-13 20:48:29,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 20:48:29,610 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:48:29,610 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] [2022-12-13 20:48:29,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 20:48:29,610 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:48:29,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:48:29,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1540298822, now seen corresponding path program 1 times [2022-12-13 20:48:29,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:48:29,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091172049] [2022-12-13 20:48:29,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:48:29,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:48:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:29,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:48:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:29,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 20:48:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:29,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 20:48:29,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:29,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 20:48:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:29,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 20:48:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:29,743 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 20:48:29,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:48:29,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091172049] [2022-12-13 20:48:29,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091172049] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:48:29,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:48:29,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:48:29,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901883337] [2022-12-13 20:48:29,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:48:29,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:48:29,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:48:29,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:48:29,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:48:29,745 INFO L87 Difference]: Start difference. First operand 39293 states and 63680 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:48:48,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:48:48,169 INFO L93 Difference]: Finished difference Result 151030 states and 244645 transitions. [2022-12-13 20:48:48,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 20:48:48,170 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 20:48:48,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:48:48,479 INFO L225 Difference]: With dead ends: 151030 [2022-12-13 20:48:48,480 INFO L226 Difference]: Without dead ends: 113875 [2022-12-13 20:48:48,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 20:48:48,566 INFO L413 NwaCegarLoop]: 4418 mSDtfsCounter, 5283 mSDsluCounter, 17392 mSDsCounter, 0 mSdLazyCounter, 3212 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5298 SdHoareTripleChecker+Valid, 21810 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:48:48,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5298 Valid, 21810 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3212 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 20:48:48,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113875 states. [2022-12-13 20:48:56,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113875 to 74879. [2022-12-13 20:48:56,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74879 states, 68574 states have (on average 1.5615393589407065) internal successors, (107081), 68833 states have internal predecessors, (107081), 4505 states have call successors, (4505), 1543 states have call predecessors, (4505), 1798 states have return successors, (11320), 4758 states have call predecessors, (11320), 4503 states have call successors, (11320) [2022-12-13 20:48:56,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74879 states to 74879 states and 122906 transitions. [2022-12-13 20:48:56,639 INFO L78 Accepts]: Start accepts. Automaton has 74879 states and 122906 transitions. Word has length 146 [2022-12-13 20:48:56,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:48:56,639 INFO L495 AbstractCegarLoop]: Abstraction has 74879 states and 122906 transitions. [2022-12-13 20:48:56,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:48:56,639 INFO L276 IsEmpty]: Start isEmpty. Operand 74879 states and 122906 transitions. [2022-12-13 20:48:56,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 20:48:56,659 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:48:56,659 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] [2022-12-13 20:48:56,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 20:48:56,660 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:48:56,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:48:56,660 INFO L85 PathProgramCache]: Analyzing trace with hash 388633404, now seen corresponding path program 1 times [2022-12-13 20:48:56,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:48:56,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058090204] [2022-12-13 20:48:56,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:48:56,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:48:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:56,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:48:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:56,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 20:48:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:56,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 20:48:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:56,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 20:48:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:56,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 20:48:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:56,827 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 20:48:56,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:48:56,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058090204] [2022-12-13 20:48:56,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058090204] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:48:56,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:48:56,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:48:56,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454740434] [2022-12-13 20:48:56,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:48:56,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:48:56,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:48:56,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:48:56,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:48:56,829 INFO L87 Difference]: Start difference. First operand 74879 states and 122906 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:49:30,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:49:30,218 INFO L93 Difference]: Finished difference Result 290934 states and 478781 transitions. [2022-12-13 20:49:30,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 20:49:30,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 20:49:30,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:49:30,912 INFO L225 Difference]: With dead ends: 290934 [2022-12-13 20:49:30,912 INFO L226 Difference]: Without dead ends: 218193 [2022-12-13 20:49:31,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 20:49:31,107 INFO L413 NwaCegarLoop]: 4419 mSDtfsCounter, 5491 mSDsluCounter, 17395 mSDsCounter, 0 mSdLazyCounter, 2646 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5517 SdHoareTripleChecker+Valid, 21814 SdHoareTripleChecker+Invalid, 2714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:49:31,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5517 Valid, 21814 Invalid, 2714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2646 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 20:49:31,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218193 states. [2022-12-13 20:49:47,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218193 to 147200. [2022-12-13 20:49:47,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147200 states, 134879 states have (on average 1.558811972212131) internal successors, (210251), 135394 states have internal predecessors, (210251), 8729 states have call successors, (8729), 3079 states have call predecessors, (8729), 3590 states have return successors, (28922), 9238 states have call predecessors, (28922), 8727 states have call successors, (28922) [2022-12-13 20:49:48,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147200 states to 147200 states and 247902 transitions. [2022-12-13 20:49:48,540 INFO L78 Accepts]: Start accepts. Automaton has 147200 states and 247902 transitions. Word has length 146 [2022-12-13 20:49:48,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:49:48,540 INFO L495 AbstractCegarLoop]: Abstraction has 147200 states and 247902 transitions. [2022-12-13 20:49:48,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:49:48,540 INFO L276 IsEmpty]: Start isEmpty. Operand 147200 states and 247902 transitions. [2022-12-13 20:49:48,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 20:49:48,584 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:49:48,584 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] [2022-12-13 20:49:48,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 20:49:48,585 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:49:48,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:49:48,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1904447622, now seen corresponding path program 1 times [2022-12-13 20:49:48,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:49:48,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909748447] [2022-12-13 20:49:48,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:49:48,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:49:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:49:48,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:49:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:49:48,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 20:49:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:49:48,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 20:49:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:49:48,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 20:49:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:49:48,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 20:49:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:49:48,716 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 20:49:48,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:49:48,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909748447] [2022-12-13 20:49:48,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909748447] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:49:48,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:49:48,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:49:48,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108156534] [2022-12-13 20:49:48,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:49:48,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:49:48,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:49:48,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:49:48,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:49:48,719 INFO L87 Difference]: Start difference. First operand 147200 states and 247902 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:50:57,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:50:57,302 INFO L93 Difference]: Finished difference Result 569589 states and 963651 transitions. [2022-12-13 20:50:57,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 20:50:57,302 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 20:50:57,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:50:58,891 INFO L225 Difference]: With dead ends: 569589 [2022-12-13 20:50:58,891 INFO L226 Difference]: Without dead ends: 424527 [2022-12-13 20:50:59,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 20:50:59,347 INFO L413 NwaCegarLoop]: 4419 mSDtfsCounter, 5451 mSDsluCounter, 17395 mSDsCounter, 0 mSdLazyCounter, 2633 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5477 SdHoareTripleChecker+Valid, 21814 SdHoareTripleChecker+Invalid, 2701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:50:59,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5477 Valid, 21814 Invalid, 2701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2633 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 20:50:59,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424527 states. [2022-12-13 20:51:32,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424527 to 291585. [2022-12-13 20:51:32,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291585 states, 267488 states have (on average 1.5583689735614308) internal successors, (416845), 268515 states have internal predecessors, (416845), 16921 states have call successors, (16921), 6151 states have call predecessors, (16921), 7174 states have return successors, (76992), 17942 states have call predecessors, (76992), 16919 states have call successors, (76992) [2022-12-13 20:51:34,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291585 states to 291585 states and 510758 transitions. [2022-12-13 20:51:34,115 INFO L78 Accepts]: Start accepts. Automaton has 291585 states and 510758 transitions. Word has length 146 [2022-12-13 20:51:34,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:51:34,115 INFO L495 AbstractCegarLoop]: Abstraction has 291585 states and 510758 transitions. [2022-12-13 20:51:34,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:51:34,115 INFO L276 IsEmpty]: Start isEmpty. Operand 291585 states and 510758 transitions. [2022-12-13 20:51:34,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 20:51:34,227 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:51:34,227 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] [2022-12-13 20:51:34,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 20:51:34,227 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:51:34,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:34,228 INFO L85 PathProgramCache]: Analyzing trace with hash -177302660, now seen corresponding path program 1 times [2022-12-13 20:51:34,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:51:34,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973110970] [2022-12-13 20:51:34,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:34,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:51:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:34,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:51:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:34,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 20:51:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:34,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 20:51:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:34,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 20:51:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:34,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 20:51:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:34,367 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 20:51:34,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:51:34,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973110970] [2022-12-13 20:51:34,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973110970] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:51:34,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:51:34,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:51:34,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989351196] [2022-12-13 20:51:34,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:51:34,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:51:34,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:51:34,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:51:34,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:51:34,369 INFO L87 Difference]: Start difference. First operand 291585 states and 510758 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:53:50,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:53:50,556 INFO L93 Difference]: Finished difference Result 1117428 states and 1970777 transitions. [2022-12-13 20:53:50,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 20:53:50,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 20:53:50,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:53:54,541 INFO L225 Difference]: With dead ends: 1117428 [2022-12-13 20:53:54,542 INFO L226 Difference]: Without dead ends: 827981 [2022-12-13 20:53:55,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 20:53:55,790 INFO L413 NwaCegarLoop]: 4256 mSDtfsCounter, 5317 mSDsluCounter, 16863 mSDsCounter, 0 mSdLazyCounter, 2771 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5332 SdHoareTripleChecker+Valid, 21119 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:53:55,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5332 Valid, 21119 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2771 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 20:53:56,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827981 states. [2022-12-13 20:55:06,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827981 to 579842. [2022-12-13 20:55:07,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579842 states, 532705 states have (on average 1.5591049455139336) internal successors, (830543), 534756 states have internal predecessors, (830543), 32793 states have call successors, (32793), 12295 states have call predecessors, (32793), 14342 states have return successors, (211986), 34838 states have call predecessors, (211986), 32791 states have call successors, (211986) [2022-12-13 20:55:10,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579842 states to 579842 states and 1075322 transitions. [2022-12-13 20:55:10,542 INFO L78 Accepts]: Start accepts. Automaton has 579842 states and 1075322 transitions. Word has length 146 [2022-12-13 20:55:10,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:55:10,543 INFO L495 AbstractCegarLoop]: Abstraction has 579842 states and 1075322 transitions. [2022-12-13 20:55:10,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:55:10,543 INFO L276 IsEmpty]: Start isEmpty. Operand 579842 states and 1075322 transitions. [2022-12-13 20:55:10,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 20:55:10,818 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:55:10,818 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] [2022-12-13 20:55:10,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 20:55:10,819 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:55:10,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:55:10,819 INFO L85 PathProgramCache]: Analyzing trace with hash 294053690, now seen corresponding path program 1 times [2022-12-13 20:55:10,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:55:10,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412131792] [2022-12-13 20:55:10,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:55:10,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:55:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:55:10,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:55:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:55:10,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 20:55:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:55:10,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 20:55:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:55:10,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 20:55:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:55:10,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 20:55:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:55:10,968 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 20:55:10,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:55:10,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412131792] [2022-12-13 20:55:10,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412131792] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:55:10,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:55:10,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:55:10,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268397565] [2022-12-13 20:55:10,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:55:10,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:55:10,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:55:10,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:55:10,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:55:10,970 INFO L87 Difference]: Start difference. First operand 579842 states and 1075322 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:57:07,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:57:07,960 INFO L93 Difference]: Finished difference Result 1323732 states and 2584431 transitions. [2022-12-13 20:57:07,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:57:07,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-12-13 20:57:07,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:57:11,817 INFO L225 Difference]: With dead ends: 1323732 [2022-12-13 20:57:11,817 INFO L226 Difference]: Without dead ends: 746028 [2022-12-13 20:57:14,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:57:14,195 INFO L413 NwaCegarLoop]: 4207 mSDtfsCounter, 4873 mSDsluCounter, 16605 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4890 SdHoareTripleChecker+Valid, 20812 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:57:14,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4890 Valid, 20812 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 20:57:14,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746028 states. [2022-12-13 20:58:36,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746028 to 579842. [2022-12-13 20:58:36,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579842 states, 532705 states have (on average 1.5552585389662197) internal successors, (828494), 534756 states have internal predecessors, (828494), 32793 states have call successors, (32793), 12295 states have call predecessors, (32793), 14342 states have return successors, (211986), 34838 states have call predecessors, (211986), 32791 states have call successors, (211986) [2022-12-13 20:58:39,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579842 states to 579842 states and 1073273 transitions. [2022-12-13 20:58:39,995 INFO L78 Accepts]: Start accepts. Automaton has 579842 states and 1073273 transitions. Word has length 146 [2022-12-13 20:58:39,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:39,996 INFO L495 AbstractCegarLoop]: Abstraction has 579842 states and 1073273 transitions. [2022-12-13 20:58:39,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:58:39,996 INFO L276 IsEmpty]: Start isEmpty. Operand 579842 states and 1073273 transitions. [2022-12-13 20:58:40,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 20:58:40,199 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:40,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:58:40,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 20:58:40,200 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:58:40,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:40,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1353309252, now seen corresponding path program 1 times [2022-12-13 20:58:40,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:40,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591604937] [2022-12-13 20:58:40,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:40,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:40,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:58:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:40,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 20:58:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:40,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 20:58:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:40,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 20:58:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:40,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 20:58:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:40,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:58:40,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:40,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591604937] [2022-12-13 20:58:40,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591604937] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:40,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:40,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:58:40,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454879996] [2022-12-13 20:58:40,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:40,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:58:40,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:40,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:58:40,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:58:40,325 INFO L87 Difference]: Start difference. First operand 579842 states and 1073273 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)