./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/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_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/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_d2f5f304-0cd0-48da-bf96-2cf218107a6b/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 b3416b3e017f399176a4f7a837e050107ced7390b025fd07360efb8b6075a94d --- 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 17:44:17,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:44:17,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:44:17,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:44:17,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:44:17,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:44:17,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:44:17,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:44:17,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:44:17,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:44:17,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:44:17,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:44:17,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:44:17,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:44:17,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:44:17,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:44:17,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:44:17,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:44:17,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:44:17,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:44:17,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:44:17,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:44:17,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:44:17,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:44:17,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:44:17,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:44:17,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:44:17,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:44:17,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:44:17,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:44:17,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:44:17,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:44:17,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:44:17,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:44:17,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:44:17,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:44:17,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:44:17,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:44:17,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:44:17,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:44:17,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:44:17,369 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 17:44:17,386 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:44:17,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:44:17,387 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:44:17,387 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:44:17,387 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:44:17,387 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:44:17,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:44:17,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:44:17,388 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:44:17,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:44:17,389 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:44:17,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:44:17,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:44:17,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:44:17,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:44:17,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:44:17,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:44:17,389 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:44:17,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:44:17,390 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:44:17,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:44:17,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:44:17,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:44:17,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:44:17,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:44:17,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:44:17,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:44:17,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:44:17,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:44:17,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:44:17,391 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:44:17,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:44:17,391 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:44:17,391 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:44:17,391 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:44:17,391 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_d2f5f304-0cd0-48da-bf96-2cf218107a6b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3416b3e017f399176a4f7a837e050107ced7390b025fd07360efb8b6075a94d [2022-12-13 17:44:17,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:44:17,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:44:17,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:44:17,576 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:44:17,576 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:44:17,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c [2022-12-13 17:44:20,141 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:44:20,346 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:44:20,346 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c [2022-12-13 17:44:20,357 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/data/4683e8984/380a6a457b8346499e81ebbbe7bab291/FLAGa9add49ba [2022-12-13 17:44:20,724 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/data/4683e8984/380a6a457b8346499e81ebbbe7bab291 [2022-12-13 17:44:20,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:44:20,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:44:20,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:44:20,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:44:20,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:44:20,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:44:20" (1/1) ... [2022-12-13 17:44:20,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d3e9e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:44:20, skipping insertion in model container [2022-12-13 17:44:20,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:44:20" (1/1) ... [2022-12-13 17:44:20,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:44:20,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:44:21,032 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_d2f5f304-0cd0-48da-bf96-2cf218107a6b/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c[10611,10624] [2022-12-13 17:44:21,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:44:21,179 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:44:21,201 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_d2f5f304-0cd0-48da-bf96-2cf218107a6b/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c[10611,10624] [2022-12-13 17:44:21,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:44:21,281 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:44:21,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:44:21 WrapperNode [2022-12-13 17:44:21,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:44:21,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:44:21,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:44:21,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:44:21,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:44:21" (1/1) ... [2022-12-13 17:44:21,305 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:44:21" (1/1) ... [2022-12-13 17:44:21,339 INFO L138 Inliner]: procedures = 95, calls = 347, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 920 [2022-12-13 17:44:21,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:44:21,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:44:21,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:44:21,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:44:21,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:44:21" (1/1) ... [2022-12-13 17:44:21,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:44:21" (1/1) ... [2022-12-13 17:44:21,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:44:21" (1/1) ... [2022-12-13 17:44:21,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:44:21" (1/1) ... [2022-12-13 17:44:21,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:44:21" (1/1) ... [2022-12-13 17:44:21,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:44:21" (1/1) ... [2022-12-13 17:44:21,377 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:44:21" (1/1) ... [2022-12-13 17:44:21,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:44:21" (1/1) ... [2022-12-13 17:44:21,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:44:21,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:44:21,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:44:21,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:44:21,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:44:21" (1/1) ... [2022-12-13 17:44:21,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:44:21,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:44:21,412 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:44:21,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:44:21,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:44:21,453 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-12-13 17:44:21,454 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-12-13 17:44:21,454 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-12-13 17:44:21,454 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-12-13 17:44:21,454 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-13 17:44:21,454 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-13 17:44:21,454 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-13 17:44:21,454 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-13 17:44:21,454 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-13 17:44:21,454 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-13 17:44:21,454 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-12-13 17:44:21,455 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-12-13 17:44:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-13 17:44:21,455 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-13 17:44:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-13 17:44:21,455 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-13 17:44:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-12-13 17:44:21,455 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-12-13 17:44:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-13 17:44:21,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-13 17:44:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-13 17:44:21,455 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-13 17:44:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-13 17:44:21,456 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-13 17:44:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-13 17:44:21,456 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-13 17:44:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-12-13 17:44:21,456 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-12-13 17:44:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-13 17:44:21,456 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-13 17:44:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-13 17:44:21,456 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-13 17:44:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-13 17:44:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-13 17:44:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-13 17:44:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-13 17:44:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-13 17:44:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-13 17:44:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:44:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-12-13 17:44:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-12-13 17:44:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-13 17:44:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-13 17:44:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-13 17:44:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-13 17:44:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-13 17:44:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-13 17:44:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-12-13 17:44:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-12-13 17:44:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:44:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:44:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-13 17:44:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-13 17:44:21,568 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:44:21,570 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:44:22,349 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:44:22,361 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:44:22,362 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 17:44:22,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:44:22 BoogieIcfgContainer [2022-12-13 17:44:22,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:44:22,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:44:22,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:44:22,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:44:22,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:44:20" (1/3) ... [2022-12-13 17:44:22,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec7d90e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:44:22, skipping insertion in model container [2022-12-13 17:44:22,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:44:21" (2/3) ... [2022-12-13 17:44:22,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec7d90e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:44:22, skipping insertion in model container [2022-12-13 17:44:22,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:44:22" (3/3) ... [2022-12-13 17:44:22,373 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product30.cil.c [2022-12-13 17:44:22,392 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:44:22,392 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 17:44:22,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:44:22,460 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;@78e12500, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:44:22,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 17:44:22,467 INFO L276 IsEmpty]: Start isEmpty. Operand has 581 states, 456 states have (on average 1.6929824561403508) internal successors, (772), 479 states have internal predecessors, (772), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) [2022-12-13 17:44:22,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-13 17:44:22,482 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:44:22,482 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] [2022-12-13 17:44:22,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:44:22,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:44:22,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1129781487, now seen corresponding path program 1 times [2022-12-13 17:44:22,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:44:22,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031906359] [2022-12-13 17:44:22,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:44:22,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:44:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:22,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:44:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:22,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:22,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:44:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:23,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:44:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:23,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:23,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:23,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:44:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:23,098 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 17:44:23,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:44:23,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031906359] [2022-12-13 17:44:23,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031906359] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:44:23,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:44:23,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:44:23,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474621420] [2022-12-13 17:44:23,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:44:23,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:44:23,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:44:23,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:44:23,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:44:23,128 INFO L87 Difference]: Start difference. First operand has 581 states, 456 states have (on average 1.6929824561403508) internal successors, (772), 479 states have internal predecessors, (772), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:44:27,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:44:27,479 INFO L93 Difference]: Finished difference Result 1305 states and 2205 transitions. [2022-12-13 17:44:27,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:44:27,481 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-12-13 17:44:27,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:44:27,494 INFO L225 Difference]: With dead ends: 1305 [2022-12-13 17:44:27,494 INFO L226 Difference]: Without dead ends: 736 [2022-12-13 17:44:27,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:44:27,502 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 1179 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-13 17:44:27,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1263 Valid, 1226 Invalid, 2989 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [274 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-13 17:44:27,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-12-13 17:44:27,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-12-13 17:44:27,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6888888888888889) internal successors, (760), 471 states have internal predecessors, (760), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-12-13 17:44:27,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 951 transitions. [2022-12-13 17:44:27,625 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 951 transitions. Word has length 60 [2022-12-13 17:44:27,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:44:27,625 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 951 transitions. [2022-12-13 17:44:27,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:44:27,626 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 951 transitions. [2022-12-13 17:44:27,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 17:44:27,628 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:44:27,628 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] [2022-12-13 17:44:27,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:44:27,629 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:44:27,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:44:27,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1483396888, now seen corresponding path program 1 times [2022-12-13 17:44:27,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:44:27,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038435237] [2022-12-13 17:44:27,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:44:27,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:44:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:27,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:44:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:27,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:27,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:44:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:27,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 17:44:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:27,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:27,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:27,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:44:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:27,965 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 17:44:27,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:44:27,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038435237] [2022-12-13 17:44:27,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038435237] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:44:27,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:44:27,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:44:27,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107116531] [2022-12-13 17:44:27,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:44:27,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:44:27,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:44:27,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:44:27,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:44:27,968 INFO L87 Difference]: Start difference. First operand 573 states and 951 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:44:31,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:44:31,914 INFO L93 Difference]: Finished difference Result 1291 states and 2171 transitions. [2022-12-13 17:44:31,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:44:31,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-12-13 17:44:31,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:44:31,919 INFO L225 Difference]: With dead ends: 1291 [2022-12-13 17:44:31,919 INFO L226 Difference]: Without dead ends: 736 [2022-12-13 17:44:31,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:44:31,922 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 1178 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 2713 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 2991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 2713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:44:31,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1262 Valid, 1183 Invalid, 2991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 2713 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 17:44:31,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-12-13 17:44:31,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-12-13 17:44:31,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6866666666666668) internal successors, (759), 471 states have internal predecessors, (759), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-12-13 17:44:31,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 950 transitions. [2022-12-13 17:44:31,997 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 950 transitions. Word has length 63 [2022-12-13 17:44:31,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:44:31,997 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 950 transitions. [2022-12-13 17:44:31,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:44:31,998 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 950 transitions. [2022-12-13 17:44:31,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-13 17:44:31,999 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:44:31,999 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] [2022-12-13 17:44:31,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:44:31,999 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:44:32,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:44:32,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2110645953, now seen corresponding path program 1 times [2022-12-13 17:44:32,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:44:32,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471987594] [2022-12-13 17:44:32,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:44:32,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:44:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:32,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:44:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:32,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:32,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:44:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:32,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 17:44:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:32,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:32,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:32,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:44:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:32,288 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 17:44:32,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:44:32,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471987594] [2022-12-13 17:44:32,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471987594] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:44:32,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:44:32,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:44:32,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316234419] [2022-12-13 17:44:32,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:44:32,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:44:32,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:44:32,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:44:32,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:44:32,290 INFO L87 Difference]: Start difference. First operand 573 states and 950 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:44:36,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:44:36,770 INFO L93 Difference]: Finished difference Result 1291 states and 2170 transitions. [2022-12-13 17:44:36,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:44:36,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2022-12-13 17:44:36,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:44:36,774 INFO L225 Difference]: With dead ends: 1291 [2022-12-13 17:44:36,774 INFO L226 Difference]: Without dead ends: 736 [2022-12-13 17:44:36,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:44:36,776 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 714 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 2893 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 3022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:44:36,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 1185 Invalid, 3022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2893 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-12-13 17:44:36,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-12-13 17:44:36,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-12-13 17:44:36,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6844444444444444) internal successors, (758), 471 states have internal predecessors, (758), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-12-13 17:44:36,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 949 transitions. [2022-12-13 17:44:36,839 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 949 transitions. Word has length 64 [2022-12-13 17:44:36,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:44:36,840 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 949 transitions. [2022-12-13 17:44:36,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:44:36,840 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 949 transitions. [2022-12-13 17:44:36,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 17:44:36,841 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:44:36,841 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] [2022-12-13 17:44:36,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 17:44:36,841 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:44:36,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:44:36,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1042691004, now seen corresponding path program 1 times [2022-12-13 17:44:36,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:44:36,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164279192] [2022-12-13 17:44:36,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:44:36,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:44:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:36,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:44:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:36,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:36,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:44:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:37,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 17:44:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:37,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:37,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:37,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:44:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:37,139 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 17:44:37,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:44:37,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164279192] [2022-12-13 17:44:37,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164279192] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:44:37,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:44:37,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:44:37,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998760474] [2022-12-13 17:44:37,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:44:37,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:44:37,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:44:37,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:44:37,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:44:37,142 INFO L87 Difference]: Start difference. First operand 573 states and 949 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:44:41,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:44:41,342 INFO L93 Difference]: Finished difference Result 1291 states and 2169 transitions. [2022-12-13 17:44:41,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:44:41,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-12-13 17:44:41,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:44:41,346 INFO L225 Difference]: With dead ends: 1291 [2022-12-13 17:44:41,346 INFO L226 Difference]: Without dead ends: 736 [2022-12-13 17:44:41,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:44:41,348 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 711 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 2891 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 3019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:44:41,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1191 Invalid, 3019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2891 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-12-13 17:44:41,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-12-13 17:44:41,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-12-13 17:44:41,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6822222222222223) internal successors, (757), 471 states have internal predecessors, (757), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-12-13 17:44:41,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 948 transitions. [2022-12-13 17:44:41,417 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 948 transitions. Word has length 65 [2022-12-13 17:44:41,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:44:41,417 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 948 transitions. [2022-12-13 17:44:41,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:44:41,417 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 948 transitions. [2022-12-13 17:44:41,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 17:44:41,418 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:44:41,418 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] [2022-12-13 17:44:41,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 17:44:41,418 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:44:41,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:44:41,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1036980827, now seen corresponding path program 1 times [2022-12-13 17:44:41,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:44:41,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810535260] [2022-12-13 17:44:41,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:44:41,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:44:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:41,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:44:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:41,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:41,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 17:44:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:41,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 17:44:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:41,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:41,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:41,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:44:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:41,730 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 17:44:41,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:44:41,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810535260] [2022-12-13 17:44:41,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810535260] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:44:41,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:44:41,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:44:41,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183738616] [2022-12-13 17:44:41,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:44:41,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:44:41,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:44:41,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:44:41,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:44:41,731 INFO L87 Difference]: Start difference. First operand 573 states and 948 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:44:45,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:44:45,881 INFO L93 Difference]: Finished difference Result 1291 states and 2168 transitions. [2022-12-13 17:44:45,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:44:45,882 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-12-13 17:44:45,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:44:45,887 INFO L225 Difference]: With dead ends: 1291 [2022-12-13 17:44:45,887 INFO L226 Difference]: Without dead ends: 736 [2022-12-13 17:44:45,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:44:45,890 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 1163 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 2981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 2707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-13 17:44:45,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 1198 Invalid, 2981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 2707 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-13 17:44:45,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-12-13 17:44:45,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-12-13 17:44:45,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.68) internal successors, (756), 471 states have internal predecessors, (756), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-12-13 17:44:45,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 947 transitions. [2022-12-13 17:44:45,999 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 947 transitions. Word has length 66 [2022-12-13 17:44:46,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:44:46,000 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 947 transitions. [2022-12-13 17:44:46,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:44:46,000 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 947 transitions. [2022-12-13 17:44:46,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 17:44:46,002 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:44:46,002 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] [2022-12-13 17:44:46,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 17:44:46,002 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:44:46,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:44:46,003 INFO L85 PathProgramCache]: Analyzing trace with hash 120137632, now seen corresponding path program 1 times [2022-12-13 17:44:46,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:44:46,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264741360] [2022-12-13 17:44:46,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:44:46,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:44:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:46,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:44:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:46,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:46,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:44:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:46,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 17:44:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:46,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:46,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:46,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:44:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:46,360 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 17:44:46,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:44:46,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264741360] [2022-12-13 17:44:46,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264741360] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:44:46,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:44:46,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:44:46,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743756534] [2022-12-13 17:44:46,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:44:46,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:44:46,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:44:46,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:44:46,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:44:46,362 INFO L87 Difference]: Start difference. First operand 573 states and 947 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:44:50,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:44:50,704 INFO L93 Difference]: Finished difference Result 1251 states and 2092 transitions. [2022-12-13 17:44:50,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:44:50,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-12-13 17:44:50,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:44:50,709 INFO L225 Difference]: With dead ends: 1251 [2022-12-13 17:44:50,709 INFO L226 Difference]: Without dead ends: 736 [2022-12-13 17:44:50,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:44:50,710 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 803 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 2813 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:44:50,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 1213 Invalid, 2940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2813 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-12-13 17:44:50,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-12-13 17:44:50,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-12-13 17:44:50,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6688888888888889) internal successors, (751), 471 states have internal predecessors, (751), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-12-13 17:44:50,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 942 transitions. [2022-12-13 17:44:50,774 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 942 transitions. Word has length 67 [2022-12-13 17:44:50,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:44:50,775 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 942 transitions. [2022-12-13 17:44:50,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:44:50,775 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 942 transitions. [2022-12-13 17:44:50,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 17:44:50,776 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:44:50,776 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] [2022-12-13 17:44:50,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 17:44:50,776 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:44:50,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:44:50,776 INFO L85 PathProgramCache]: Analyzing trace with hash -948333069, now seen corresponding path program 1 times [2022-12-13 17:44:50,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:44:50,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519268643] [2022-12-13 17:44:50,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:44:50,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:44:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:50,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:44:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:50,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:50,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:44:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:51,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 17:44:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:51,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:51,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:51,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:44:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:51,076 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 17:44:51,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:44:51,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519268643] [2022-12-13 17:44:51,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519268643] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:44:51,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:44:51,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:44:51,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935346260] [2022-12-13 17:44:51,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:44:51,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:44:51,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:44:51,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:44:51,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:44:51,078 INFO L87 Difference]: Start difference. First operand 573 states and 942 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:44:55,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:44:55,398 INFO L93 Difference]: Finished difference Result 1251 states and 2087 transitions. [2022-12-13 17:44:55,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:44:55,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-12-13 17:44:55,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:44:55,401 INFO L225 Difference]: With dead ends: 1251 [2022-12-13 17:44:55,401 INFO L226 Difference]: Without dead ends: 736 [2022-12-13 17:44:55,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:44:55,403 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 798 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 2789 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:44:55,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 1177 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2789 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-12-13 17:44:55,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-12-13 17:44:55,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-12-13 17:44:55,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6577777777777778) internal successors, (746), 471 states have internal predecessors, (746), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-12-13 17:44:55,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 937 transitions. [2022-12-13 17:44:55,475 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 937 transitions. Word has length 68 [2022-12-13 17:44:55,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:44:55,475 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 937 transitions. [2022-12-13 17:44:55,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:44:55,476 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 937 transitions. [2022-12-13 17:44:55,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 17:44:55,477 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:44:55,477 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] [2022-12-13 17:44:55,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 17:44:55,478 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:44:55,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:44:55,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1954669627, now seen corresponding path program 1 times [2022-12-13 17:44:55,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:44:55,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228426908] [2022-12-13 17:44:55,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:44:55,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:44:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:55,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:44:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:55,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:55,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:44:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:55,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 17:44:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:55,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:55,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:44:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:55,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:44:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:44:55,789 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 17:44:55,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:44:55,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228426908] [2022-12-13 17:44:55,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228426908] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:44:55,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:44:55,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:44:55,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973788097] [2022-12-13 17:44:55,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:44:55,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:44:55,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:44:55,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:44:55,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:44:55,791 INFO L87 Difference]: Start difference. First operand 573 states and 937 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:45:00,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:45:00,509 INFO L93 Difference]: Finished difference Result 1251 states and 2082 transitions. [2022-12-13 17:45:00,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:45:00,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-12-13 17:45:00,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:45:00,512 INFO L225 Difference]: With dead ends: 1251 [2022-12-13 17:45:00,512 INFO L226 Difference]: Without dead ends: 736 [2022-12-13 17:45:00,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:45:00,513 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 791 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 2901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:45:00,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 1207 Invalid, 2901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2773 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-12-13 17:45:00,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-12-13 17:45:00,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-12-13 17:45:00,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6466666666666667) internal successors, (741), 471 states have internal predecessors, (741), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-12-13 17:45:00,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 932 transitions. [2022-12-13 17:45:00,605 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 932 transitions. Word has length 69 [2022-12-13 17:45:00,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:45:00,606 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 932 transitions. [2022-12-13 17:45:00,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:45:00,606 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 932 transitions. [2022-12-13 17:45:00,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-13 17:45:00,607 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:45:00,607 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] [2022-12-13 17:45:00,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 17:45:00,607 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:45:00,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:45:00,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1034847752, now seen corresponding path program 1 times [2022-12-13 17:45:00,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:45:00,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089663155] [2022-12-13 17:45:00,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:45:00,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:45:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:00,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:45:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:00,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:00,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:45:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:00,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 17:45:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:00,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:00,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:00,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:45:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:00,914 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 17:45:00,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:45:00,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089663155] [2022-12-13 17:45:00,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089663155] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:45:00,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:45:00,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:45:00,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749492646] [2022-12-13 17:45:00,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:45:00,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:45:00,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:45:00,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:45:00,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:45:00,916 INFO L87 Difference]: Start difference. First operand 573 states and 932 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:45:04,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:45:04,233 INFO L93 Difference]: Finished difference Result 1251 states and 2077 transitions. [2022-12-13 17:45:04,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:45:04,234 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-12-13 17:45:04,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:45:04,237 INFO L225 Difference]: With dead ends: 1251 [2022-12-13 17:45:04,237 INFO L226 Difference]: Without dead ends: 736 [2022-12-13 17:45:04,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:45:04,239 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 1251 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 2586 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 2865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 2586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:45:04,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 1164 Invalid, 2865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 2586 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 17:45:04,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-12-13 17:45:04,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-12-13 17:45:04,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6355555555555557) internal successors, (736), 471 states have internal predecessors, (736), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-12-13 17:45:04,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 927 transitions. [2022-12-13 17:45:04,309 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 927 transitions. Word has length 70 [2022-12-13 17:45:04,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:45:04,309 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 927 transitions. [2022-12-13 17:45:04,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:45:04,309 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 927 transitions. [2022-12-13 17:45:04,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-13 17:45:04,310 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:45:04,310 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] [2022-12-13 17:45:04,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 17:45:04,310 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:45:04,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:45:04,311 INFO L85 PathProgramCache]: Analyzing trace with hash -90463079, now seen corresponding path program 1 times [2022-12-13 17:45:04,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:45:04,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068024210] [2022-12-13 17:45:04,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:45:04,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:45:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:04,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:45:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:04,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:04,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:45:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:04,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 17:45:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:04,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:04,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:04,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:45:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:04,608 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 17:45:04,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:45:04,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068024210] [2022-12-13 17:45:04,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068024210] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:45:04,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:45:04,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:45:04,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207980056] [2022-12-13 17:45:04,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:45:04,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:45:04,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:45:04,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:45:04,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:45:04,613 INFO L87 Difference]: Start difference. First operand 573 states and 927 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:45:08,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:45:08,310 INFO L93 Difference]: Finished difference Result 1266 states and 2092 transitions. [2022-12-13 17:45:08,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 17:45:08,311 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-12-13 17:45:08,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:45:08,313 INFO L225 Difference]: With dead ends: 1266 [2022-12-13 17:45:08,313 INFO L226 Difference]: Without dead ends: 757 [2022-12-13 17:45:08,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:45:08,315 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 1248 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 2607 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 2885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 2607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:45:08,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1332 Valid, 1165 Invalid, 2885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 2607 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-12-13 17:45:08,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-12-13 17:45:08,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 575. [2022-12-13 17:45:08,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 452 states have (on average 1.6327433628318584) internal successors, (738), 473 states have internal predecessors, (738), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-12-13 17:45:08,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 929 transitions. [2022-12-13 17:45:08,391 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 929 transitions. Word has length 70 [2022-12-13 17:45:08,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:45:08,391 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 929 transitions. [2022-12-13 17:45:08,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:45:08,392 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 929 transitions. [2022-12-13 17:45:08,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-13 17:45:08,392 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:45:08,393 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] [2022-12-13 17:45:08,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 17:45:08,393 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:45:08,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:45:08,393 INFO L85 PathProgramCache]: Analyzing trace with hash -533656598, now seen corresponding path program 1 times [2022-12-13 17:45:08,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:45:08,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599796882] [2022-12-13 17:45:08,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:45:08,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:45:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:08,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:45:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:08,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:08,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:45:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:08,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 17:45:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:08,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:08,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:08,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:45:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:08,657 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 17:45:08,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:45:08,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599796882] [2022-12-13 17:45:08,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599796882] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:45:08,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:45:08,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:45:08,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531464092] [2022-12-13 17:45:08,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:45:08,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:45:08,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:45:08,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:45:08,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:45:08,659 INFO L87 Difference]: Start difference. First operand 575 states and 929 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:45:12,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:45:12,292 INFO L93 Difference]: Finished difference Result 1257 states and 2078 transitions. [2022-12-13 17:45:12,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:45:12,293 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-12-13 17:45:12,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:45:12,296 INFO L225 Difference]: With dead ends: 1257 [2022-12-13 17:45:12,296 INFO L226 Difference]: Without dead ends: 740 [2022-12-13 17:45:12,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:45:12,298 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 1239 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 2571 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 2844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 2571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:45:12,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1323 Valid, 1189 Invalid, 2844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 2571 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 17:45:12,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2022-12-13 17:45:12,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 575. [2022-12-13 17:45:12,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 452 states have (on average 1.6216814159292035) internal successors, (733), 473 states have internal predecessors, (733), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-12-13 17:45:12,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 924 transitions. [2022-12-13 17:45:12,372 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 924 transitions. Word has length 71 [2022-12-13 17:45:12,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:45:12,372 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 924 transitions. [2022-12-13 17:45:12,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:45:12,372 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 924 transitions. [2022-12-13 17:45:12,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-13 17:45:12,373 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:45:12,373 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] [2022-12-13 17:45:12,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 17:45:12,373 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:45:12,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:45:12,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1018314521, now seen corresponding path program 1 times [2022-12-13 17:45:12,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:45:12,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694495610] [2022-12-13 17:45:12,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:45:12,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:45:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:12,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:45:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:12,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:12,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:45:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:12,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 17:45:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:12,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:12,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:12,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:45:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:12,629 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 17:45:12,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:45:12,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694495610] [2022-12-13 17:45:12,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694495610] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:45:12,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:45:12,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:45:12,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998049552] [2022-12-13 17:45:12,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:45:12,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:45:12,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:45:12,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:45:12,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:45:12,631 INFO L87 Difference]: Start difference. First operand 575 states and 924 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:45:17,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:45:17,019 INFO L93 Difference]: Finished difference Result 1270 states and 2089 transitions. [2022-12-13 17:45:17,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 17:45:17,020 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-12-13 17:45:17,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:45:17,022 INFO L225 Difference]: With dead ends: 1270 [2022-12-13 17:45:17,022 INFO L226 Difference]: Without dead ends: 761 [2022-12-13 17:45:17,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:45:17,023 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 784 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 2740 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 2869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-13 17:45:17,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 1173 Invalid, 2869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2740 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-13 17:45:17,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-12-13 17:45:17,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 578. [2022-12-13 17:45:17,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 455 states have (on average 1.6175824175824176) internal successors, (736), 476 states have internal predecessors, (736), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-12-13 17:45:17,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 927 transitions. [2022-12-13 17:45:17,092 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 927 transitions. Word has length 71 [2022-12-13 17:45:17,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:45:17,093 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 927 transitions. [2022-12-13 17:45:17,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:45:17,093 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 927 transitions. [2022-12-13 17:45:17,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-13 17:45:17,093 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:45:17,094 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] [2022-12-13 17:45:17,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 17:45:17,094 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:45:17,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:45:17,094 INFO L85 PathProgramCache]: Analyzing trace with hash -125115907, now seen corresponding path program 1 times [2022-12-13 17:45:17,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:45:17,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082675490] [2022-12-13 17:45:17,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:45:17,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:45:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:17,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:45:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:17,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:17,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:45:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:17,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 17:45:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:17,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:17,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:17,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:45:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:17,418 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 17:45:17,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:45:17,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082675490] [2022-12-13 17:45:17,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082675490] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:45:17,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:45:17,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 17:45:17,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911128112] [2022-12-13 17:45:17,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:45:17,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 17:45:17,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:45:17,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 17:45:17,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:45:17,419 INFO L87 Difference]: Start difference. First operand 578 states and 927 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 17:45:22,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:45:22,789 INFO L93 Difference]: Finished difference Result 1274 states and 2095 transitions. [2022-12-13 17:45:22,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:45:22,789 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2022-12-13 17:45:22,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:45:22,792 INFO L225 Difference]: With dead ends: 1274 [2022-12-13 17:45:22,793 INFO L226 Difference]: Without dead ends: 768 [2022-12-13 17:45:22,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-12-13 17:45:22,795 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 789 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 5095 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 5225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 5095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-13 17:45:22,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 2125 Invalid, 5225 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [130 Valid, 5095 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-12-13 17:45:22,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-12-13 17:45:22,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 589. [2022-12-13 17:45:22,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 463 states have (on average 1.613390928725702) internal successors, (747), 486 states have internal predecessors, (747), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2022-12-13 17:45:22,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 942 transitions. [2022-12-13 17:45:22,876 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 942 transitions. Word has length 72 [2022-12-13 17:45:22,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:45:22,876 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 942 transitions. [2022-12-13 17:45:22,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 17:45:22,876 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 942 transitions. [2022-12-13 17:45:22,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-13 17:45:22,877 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:45:22,877 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] [2022-12-13 17:45:22,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 17:45:22,877 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:45:22,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:45:22,877 INFO L85 PathProgramCache]: Analyzing trace with hash -805304994, now seen corresponding path program 1 times [2022-12-13 17:45:22,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:45:22,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316360887] [2022-12-13 17:45:22,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:45:22,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:45:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:22,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:45:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:23,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:23,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:45:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:23,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 17:45:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:23,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:23,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:23,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:45:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:23,172 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 17:45:23,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:45:23,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316360887] [2022-12-13 17:45:23,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316360887] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:45:23,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:45:23,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:45:23,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678965404] [2022-12-13 17:45:23,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:45:23,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:45:23,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:45:23,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:45:23,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:45:23,173 INFO L87 Difference]: Start difference. First operand 589 states and 942 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:45:27,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:45:27,592 INFO L93 Difference]: Finished difference Result 1297 states and 2126 transitions. [2022-12-13 17:45:27,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 17:45:27,593 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-12-13 17:45:27,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:45:27,596 INFO L225 Difference]: With dead ends: 1297 [2022-12-13 17:45:27,596 INFO L226 Difference]: Without dead ends: 785 [2022-12-13 17:45:27,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:45:27,597 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 778 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 2739 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 2867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-13 17:45:27,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 1189 Invalid, 2867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2739 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-13 17:45:27,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2022-12-13 17:45:27,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 593. [2022-12-13 17:45:27,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 467 states have (on average 1.6059957173447537) internal successors, (750), 490 states have internal predecessors, (750), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2022-12-13 17:45:27,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 945 transitions. [2022-12-13 17:45:27,679 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 945 transitions. Word has length 72 [2022-12-13 17:45:27,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:45:27,679 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 945 transitions. [2022-12-13 17:45:27,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:45:27,680 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 945 transitions. [2022-12-13 17:45:27,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-13 17:45:27,680 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:45:27,681 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] [2022-12-13 17:45:27,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 17:45:27,681 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:45:27,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:45:27,681 INFO L85 PathProgramCache]: Analyzing trace with hash 568276798, now seen corresponding path program 1 times [2022-12-13 17:45:27,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:45:27,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926066894] [2022-12-13 17:45:27,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:45:27,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:45:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:27,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:45:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:27,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:27,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:45:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:27,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 17:45:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:27,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:27,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:27,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:45:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:27,910 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 17:45:27,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:45:27,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926066894] [2022-12-13 17:45:27,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926066894] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:45:27,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:45:27,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:45:27,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204684826] [2022-12-13 17:45:27,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:45:27,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:45:27,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:45:27,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:45:27,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:45:27,911 INFO L87 Difference]: Start difference. First operand 593 states and 945 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:45:31,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:45:31,680 INFO L93 Difference]: Finished difference Result 1339 states and 2169 transitions. [2022-12-13 17:45:31,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:45:31,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-12-13 17:45:31,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:45:31,685 INFO L225 Difference]: With dead ends: 1339 [2022-12-13 17:45:31,685 INFO L226 Difference]: Without dead ends: 744 [2022-12-13 17:45:31,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:45:31,687 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1157 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 2608 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 2884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 2608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:45:31,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 1165 Invalid, 2884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 2608 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 17:45:31,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2022-12-13 17:45:31,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 574. [2022-12-13 17:45:31,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 451 states have (on average 1.6141906873614191) internal successors, (728), 472 states have internal predecessors, (728), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-12-13 17:45:31,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 919 transitions. [2022-12-13 17:45:31,769 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 919 transitions. Word has length 72 [2022-12-13 17:45:31,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:45:31,769 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 919 transitions. [2022-12-13 17:45:31,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:45:31,769 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 919 transitions. [2022-12-13 17:45:31,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-13 17:45:31,770 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:45:31,770 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] [2022-12-13 17:45:31,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 17:45:31,770 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:45:31,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:45:31,770 INFO L85 PathProgramCache]: Analyzing trace with hash 414656204, now seen corresponding path program 1 times [2022-12-13 17:45:31,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:45:31,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494050568] [2022-12-13 17:45:31,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:45:31,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:45:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:31,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:45:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:31,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:31,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:45:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:32,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 17:45:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:32,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:32,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:32,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:45:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:32,036 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 17:45:32,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:45:32,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494050568] [2022-12-13 17:45:32,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494050568] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:45:32,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:45:32,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:45:32,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993011466] [2022-12-13 17:45:32,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:45:32,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:45:32,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:45:32,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:45:32,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:45:32,038 INFO L87 Difference]: Start difference. First operand 574 states and 919 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:45:35,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:45:35,872 INFO L93 Difference]: Finished difference Result 1274 states and 2084 transitions. [2022-12-13 17:45:35,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 17:45:35,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-12-13 17:45:35,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:45:35,875 INFO L225 Difference]: With dead ends: 1274 [2022-12-13 17:45:35,875 INFO L226 Difference]: Without dead ends: 765 [2022-12-13 17:45:35,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:45:35,877 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1205 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 2566 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 2566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:45:35,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1289 Valid, 1173 Invalid, 2842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 2566 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 17:45:35,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-12-13 17:45:35,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 579. [2022-12-13 17:45:35,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 456 states have (on average 1.6074561403508771) internal successors, (733), 477 states have internal predecessors, (733), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-12-13 17:45:35,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 924 transitions. [2022-12-13 17:45:35,959 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 924 transitions. Word has length 73 [2022-12-13 17:45:35,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:45:35,959 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 924 transitions. [2022-12-13 17:45:35,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:45:35,959 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 924 transitions. [2022-12-13 17:45:35,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-13 17:45:35,960 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:45:35,960 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] [2022-12-13 17:45:35,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 17:45:35,960 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:45:35,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:45:35,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1473566669, now seen corresponding path program 1 times [2022-12-13 17:45:35,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:45:35,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653247371] [2022-12-13 17:45:35,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:45:35,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:45:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:36,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:45:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:36,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:36,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:45:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:36,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:45:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:36,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:36,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:36,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:45:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:36,308 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 17:45:36,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:45:36,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653247371] [2022-12-13 17:45:36,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653247371] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:45:36,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:45:36,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 17:45:36,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699591981] [2022-12-13 17:45:36,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:45:36,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:45:36,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:45:36,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:45:36,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:45:36,309 INFO L87 Difference]: Start difference. First operand 579 states and 924 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-13 17:45:44,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:45:44,335 INFO L93 Difference]: Finished difference Result 2090 states and 3506 transitions. [2022-12-13 17:45:44,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:45:44,336 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 74 [2022-12-13 17:45:44,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:45:44,342 INFO L225 Difference]: With dead ends: 2090 [2022-12-13 17:45:44,342 INFO L226 Difference]: Without dead ends: 1589 [2022-12-13 17:45:44,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:45:44,344 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 4464 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 3695 mSolverCounterSat, 1311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4554 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 5006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1311 IncrementalHoareTripleChecker+Valid, 3695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:45:44,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4554 Valid, 1565 Invalid, 5006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1311 Valid, 3695 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-12-13 17:45:44,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2022-12-13 17:45:44,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1097. [2022-12-13 17:45:44,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 862 states have (on average 1.640371229698376) internal successors, (1414), 892 states have internal predecessors, (1414), 190 states have call successors, (190), 43 states have call predecessors, (190), 44 states have return successors, (192), 174 states have call predecessors, (192), 185 states have call successors, (192) [2022-12-13 17:45:44,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1796 transitions. [2022-12-13 17:45:44,519 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1796 transitions. Word has length 74 [2022-12-13 17:45:44,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:45:44,520 INFO L495 AbstractCegarLoop]: Abstraction has 1097 states and 1796 transitions. [2022-12-13 17:45:44,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-13 17:45:44,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1796 transitions. [2022-12-13 17:45:44,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 17:45:44,522 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:45:44,522 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] [2022-12-13 17:45:44,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 17:45:44,522 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:45:44,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:45:44,522 INFO L85 PathProgramCache]: Analyzing trace with hash -106358317, now seen corresponding path program 1 times [2022-12-13 17:45:44,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:45:44,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721172288] [2022-12-13 17:45:44,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:45:44,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:45:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:44,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:45:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:44,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:44,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:45:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:44,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:45:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:45,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:45,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:45,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:45:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:45,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:45:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:45,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 17:45:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:45,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:45:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:45,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 17:45:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:45,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 17:45:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:45,408 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 17:45:45,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:45:45,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721172288] [2022-12-13 17:45:45,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721172288] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:45:45,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:45:45,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-13 17:45:45,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529297636] [2022-12-13 17:45:45,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:45:45,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 17:45:45,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:45:45,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 17:45:45,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-12-13 17:45:45,409 INFO L87 Difference]: Start difference. First operand 1097 states and 1796 transitions. Second operand has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 9 states have internal predecessors, (88), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 17:45:52,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:45:52,273 INFO L93 Difference]: Finished difference Result 2653 states and 4448 transitions. [2022-12-13 17:45:52,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 17:45:52,274 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 9 states have internal predecessors, (88), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 113 [2022-12-13 17:45:52,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:45:52,279 INFO L225 Difference]: With dead ends: 2653 [2022-12-13 17:45:52,279 INFO L226 Difference]: Without dead ends: 1635 [2022-12-13 17:45:52,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-12-13 17:45:52,282 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 2824 mSDsluCounter, 2836 mSDsCounter, 0 mSdLazyCounter, 6658 mSolverCounterSat, 1010 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2824 SdHoareTripleChecker+Valid, 3220 SdHoareTripleChecker+Invalid, 7668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1010 IncrementalHoareTripleChecker+Valid, 6658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:45:52,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2824 Valid, 3220 Invalid, 7668 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1010 Valid, 6658 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-12-13 17:45:52,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2022-12-13 17:45:52,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 1111. [2022-12-13 17:45:52,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 872 states have (on average 1.6330275229357798) internal successors, (1424), 902 states have internal predecessors, (1424), 190 states have call successors, (190), 43 states have call predecessors, (190), 48 states have return successors, (202), 178 states have call predecessors, (202), 185 states have call successors, (202) [2022-12-13 17:45:52,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1816 transitions. [2022-12-13 17:45:52,487 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1816 transitions. Word has length 113 [2022-12-13 17:45:52,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:45:52,488 INFO L495 AbstractCegarLoop]: Abstraction has 1111 states and 1816 transitions. [2022-12-13 17:45:52,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 9 states have internal predecessors, (88), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 17:45:52,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1816 transitions. [2022-12-13 17:45:52,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 17:45:52,490 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:45:52,490 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] [2022-12-13 17:45:52,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 17:45:52,490 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:45:52,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:45:52,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1223906611, now seen corresponding path program 1 times [2022-12-13 17:45:52,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:45:52,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128556177] [2022-12-13 17:45:52,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:45:52,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:45:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:52,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:45:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:52,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:52,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:45:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:52,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:45:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:53,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:53,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:45:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:53,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:45:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:53,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:45:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:53,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 17:45:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:53,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 17:45:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:53,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 17:45:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:53,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 17:45:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:45:53,294 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 17:45:53,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:45:53,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128556177] [2022-12-13 17:45:53,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128556177] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:45:53,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:45:53,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 17:45:53,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543915973] [2022-12-13 17:45:53,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:45:53,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 17:45:53,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:45:53,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 17:45:53,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:45:53,297 INFO L87 Difference]: Start difference. First operand 1111 states and 1816 transitions. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 17:46:00,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:46:00,365 INFO L93 Difference]: Finished difference Result 2681 states and 4488 transitions. [2022-12-13 17:46:00,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 17:46:00,366 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 114 [2022-12-13 17:46:00,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:46:00,374 INFO L225 Difference]: With dead ends: 2681 [2022-12-13 17:46:00,374 INFO L226 Difference]: Without dead ends: 1649 [2022-12-13 17:46:00,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2022-12-13 17:46:00,379 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 3460 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 5669 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3460 SdHoareTripleChecker+Valid, 2737 SdHoareTripleChecker+Invalid, 6914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 5669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:46:00,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3460 Valid, 2737 Invalid, 6914 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1245 Valid, 5669 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-12-13 17:46:00,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2022-12-13 17:46:00,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1113. [2022-12-13 17:46:00,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 874 states have (on average 1.631578947368421) internal successors, (1426), 902 states have internal predecessors, (1426), 190 states have call successors, (190), 43 states have call predecessors, (190), 48 states have return successors, (202), 180 states have call predecessors, (202), 185 states have call successors, (202) [2022-12-13 17:46:00,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1818 transitions. [2022-12-13 17:46:00,627 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1818 transitions. Word has length 114 [2022-12-13 17:46:00,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:46:00,627 INFO L495 AbstractCegarLoop]: Abstraction has 1113 states and 1818 transitions. [2022-12-13 17:46:00,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 17:46:00,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1818 transitions. [2022-12-13 17:46:00,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 17:46:00,629 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:46:00,629 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] [2022-12-13 17:46:00,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 17:46:00,629 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:46:00,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:46:00,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1027503763, now seen corresponding path program 1 times [2022-12-13 17:46:00,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:46:00,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955109574] [2022-12-13 17:46:00,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:46:00,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:46:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:00,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:46:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:00,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:46:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:00,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:46:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:01,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:46:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:01,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:46:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:01,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:46:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:01,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:46:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:01,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:46:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:01,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 17:46:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:01,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 17:46:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:01,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 17:46:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:01,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 17:46:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:01,444 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 17:46:01,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:46:01,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955109574] [2022-12-13 17:46:01,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955109574] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:46:01,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:46:01,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-13 17:46:01,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73446491] [2022-12-13 17:46:01,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:46:01,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 17:46:01,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:46:01,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 17:46:01,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-12-13 17:46:01,446 INFO L87 Difference]: Start difference. First operand 1113 states and 1818 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-12-13 17:46:10,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:46:10,814 INFO L93 Difference]: Finished difference Result 3309 states and 5554 transitions. [2022-12-13 17:46:10,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 17:46:10,814 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 114 [2022-12-13 17:46:10,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:46:10,822 INFO L225 Difference]: With dead ends: 3309 [2022-12-13 17:46:10,822 INFO L226 Difference]: Without dead ends: 2274 [2022-12-13 17:46:10,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 17:46:10,825 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 3823 mSDsluCounter, 2870 mSDsCounter, 0 mSdLazyCounter, 7731 mSolverCounterSat, 1432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3823 SdHoareTripleChecker+Valid, 3364 SdHoareTripleChecker+Invalid, 9163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1432 IncrementalHoareTripleChecker+Valid, 7731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-12-13 17:46:10,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3823 Valid, 3364 Invalid, 9163 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1432 Valid, 7731 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-12-13 17:46:10,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2022-12-13 17:46:11,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 1634. [2022-12-13 17:46:11,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1285 states have (on average 1.619455252918288) internal successors, (2081), 1312 states have internal predecessors, (2081), 270 states have call successors, (270), 67 states have call predecessors, (270), 78 states have return successors, (305), 265 states have call predecessors, (305), 265 states have call successors, (305) [2022-12-13 17:46:11,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2656 transitions. [2022-12-13 17:46:11,185 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2656 transitions. Word has length 114 [2022-12-13 17:46:11,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:46:11,185 INFO L495 AbstractCegarLoop]: Abstraction has 1634 states and 2656 transitions. [2022-12-13 17:46:11,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-12-13 17:46:11,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2656 transitions. [2022-12-13 17:46:11,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-13 17:46:11,187 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:46:11,187 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] [2022-12-13 17:46:11,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 17:46:11,188 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:46:11,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:46:11,188 INFO L85 PathProgramCache]: Analyzing trace with hash -2080201733, now seen corresponding path program 1 times [2022-12-13 17:46:11,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:46:11,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42030306] [2022-12-13 17:46:11,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:46:11,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:46:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:11,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:46:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:11,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:46:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:11,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:46:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:11,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:46:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:11,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:46:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:11,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:46:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:11,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:46:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:11,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:46:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:11,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 17:46:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:11,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:46:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:11,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 17:46:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:11,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 17:46:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:11,825 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 17:46:11,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:46:11,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42030306] [2022-12-13 17:46:11,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42030306] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:46:11,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:46:11,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 17:46:11,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049586563] [2022-12-13 17:46:11,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:46:11,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 17:46:11,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:46:11,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 17:46:11,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:46:11,827 INFO L87 Difference]: Start difference. First operand 1634 states and 2656 transitions. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-12-13 17:46:28,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:46:28,053 INFO L93 Difference]: Finished difference Result 7104 states and 12580 transitions. [2022-12-13 17:46:28,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-13 17:46:28,054 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 117 [2022-12-13 17:46:28,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:46:28,075 INFO L225 Difference]: With dead ends: 7104 [2022-12-13 17:46:28,075 INFO L226 Difference]: Without dead ends: 5544 [2022-12-13 17:46:28,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=550, Invalid=1172, Unknown=0, NotChecked=0, Total=1722 [2022-12-13 17:46:28,084 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 6294 mSDsluCounter, 2177 mSDsCounter, 0 mSdLazyCounter, 7703 mSolverCounterSat, 3050 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6294 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 10753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3050 IncrementalHoareTripleChecker+Valid, 7703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:46:28,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6294 Valid, 2692 Invalid, 10753 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3050 Valid, 7703 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2022-12-13 17:46:28,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5544 states. [2022-12-13 17:46:29,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5544 to 4334. [2022-12-13 17:46:29,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4334 states, 3382 states have (on average 1.585156712004731) internal successors, (5361), 3456 states have internal predecessors, (5361), 726 states have call successors, (726), 191 states have call predecessors, (726), 225 states have return successors, (1075), 719 states have call predecessors, (1075), 721 states have call successors, (1075) [2022-12-13 17:46:29,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 7162 transitions. [2022-12-13 17:46:29,173 INFO L78 Accepts]: Start accepts. Automaton has 4334 states and 7162 transitions. Word has length 117 [2022-12-13 17:46:29,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:46:29,173 INFO L495 AbstractCegarLoop]: Abstraction has 4334 states and 7162 transitions. [2022-12-13 17:46:29,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-12-13 17:46:29,173 INFO L276 IsEmpty]: Start isEmpty. Operand 4334 states and 7162 transitions. [2022-12-13 17:46:29,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-12-13 17:46:29,175 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:46:29,175 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] [2022-12-13 17:46:29,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 17:46:29,175 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:46:29,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:46:29,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1940227615, now seen corresponding path program 1 times [2022-12-13 17:46:29,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:46:29,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426398629] [2022-12-13 17:46:29,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:46:29,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:46:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:29,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:46:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:29,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:46:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:29,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:46:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:29,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:46:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:29,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:46:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:29,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:46:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:29,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:46:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:29,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:46:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:29,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 17:46:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:29,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:46:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:29,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 17:46:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:29,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:46:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:29,869 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 17:46:29,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:46:29,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426398629] [2022-12-13 17:46:29,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426398629] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:46:29,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:46:29,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 17:46:29,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150906513] [2022-12-13 17:46:29,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:46:29,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 17:46:29,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:46:29,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 17:46:29,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:46:29,871 INFO L87 Difference]: Start difference. First operand 4334 states and 7162 transitions. Second operand has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 17:46:38,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:46:38,965 INFO L93 Difference]: Finished difference Result 9840 states and 16778 transitions. [2022-12-13 17:46:38,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 17:46:38,965 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 118 [2022-12-13 17:46:38,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:46:38,983 INFO L225 Difference]: With dead ends: 9840 [2022-12-13 17:46:38,983 INFO L226 Difference]: Without dead ends: 5586 [2022-12-13 17:46:38,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2022-12-13 17:46:38,995 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 3649 mSDsluCounter, 2466 mSDsCounter, 0 mSdLazyCounter, 6079 mSolverCounterSat, 1327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3649 SdHoareTripleChecker+Valid, 2857 SdHoareTripleChecker+Invalid, 7406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1327 IncrementalHoareTripleChecker+Valid, 6079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:46:38,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3649 Valid, 2857 Invalid, 7406 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1327 Valid, 6079 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-12-13 17:46:38,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5586 states. [2022-12-13 17:46:40,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5586 to 4346. [2022-12-13 17:46:40,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4346 states, 3394 states have (on average 1.5830878020035357) internal successors, (5373), 3456 states have internal predecessors, (5373), 726 states have call successors, (726), 191 states have call predecessors, (726), 225 states have return successors, (1075), 731 states have call predecessors, (1075), 721 states have call successors, (1075) [2022-12-13 17:46:40,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4346 states to 4346 states and 7174 transitions. [2022-12-13 17:46:40,083 INFO L78 Accepts]: Start accepts. Automaton has 4346 states and 7174 transitions. Word has length 118 [2022-12-13 17:46:40,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:46:40,083 INFO L495 AbstractCegarLoop]: Abstraction has 4346 states and 7174 transitions. [2022-12-13 17:46:40,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 17:46:40,083 INFO L276 IsEmpty]: Start isEmpty. Operand 4346 states and 7174 transitions. [2022-12-13 17:46:40,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-12-13 17:46:40,085 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:46:40,085 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] [2022-12-13 17:46:40,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 17:46:40,086 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:46:40,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:46:40,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1313058231, now seen corresponding path program 1 times [2022-12-13 17:46:40,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:46:40,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689099743] [2022-12-13 17:46:40,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:46:40,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:46:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:40,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:46:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:40,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:46:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:40,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:46:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:40,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:46:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:40,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:46:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:40,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:46:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:40,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:46:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:40,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:46:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:40,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 17:46:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:40,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 17:46:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:40,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:46:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:40,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 17:46:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:40,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 17:46:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:40,714 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 17:46:40,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:46:40,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689099743] [2022-12-13 17:46:40,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689099743] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:46:40,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:46:40,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-13 17:46:40,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354601621] [2022-12-13 17:46:40,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:46:40,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 17:46:40,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:46:40,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 17:46:40,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-12-13 17:46:40,717 INFO L87 Difference]: Start difference. First operand 4346 states and 7174 transitions. Second operand has 16 states, 16 states have (on average 6.1875) internal successors, (99), 12 states have internal predecessors, (99), 7 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2022-12-13 17:46:55,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:46:55,697 INFO L93 Difference]: Finished difference Result 14135 states and 24684 transitions. [2022-12-13 17:46:55,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-13 17:46:55,697 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.1875) internal successors, (99), 12 states have internal predecessors, (99), 7 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) Word has length 126 [2022-12-13 17:46:55,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:46:55,739 INFO L225 Difference]: With dead ends: 14135 [2022-12-13 17:46:55,739 INFO L226 Difference]: Without dead ends: 9869 [2022-12-13 17:46:55,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2022-12-13 17:46:55,756 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 6617 mSDsluCounter, 3003 mSDsCounter, 0 mSdLazyCounter, 9261 mSolverCounterSat, 2361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6617 SdHoareTripleChecker+Valid, 3394 SdHoareTripleChecker+Invalid, 11622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2361 IncrementalHoareTripleChecker+Valid, 9261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-12-13 17:46:55,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6617 Valid, 3394 Invalid, 11622 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2361 Valid, 9261 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-12-13 17:46:55,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9869 states. [2022-12-13 17:46:57,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9869 to 7869. [2022-12-13 17:46:57,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7869 states, 6156 states have (on average 1.5659519168291098) internal successors, (9640), 6244 states have internal predecessors, (9640), 1246 states have call successors, (1246), 355 states have call predecessors, (1246), 466 states have return successors, (2240), 1324 states have call predecessors, (2240), 1241 states have call successors, (2240) [2022-12-13 17:46:57,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7869 states to 7869 states and 13126 transitions. [2022-12-13 17:46:57,750 INFO L78 Accepts]: Start accepts. Automaton has 7869 states and 13126 transitions. Word has length 126 [2022-12-13 17:46:57,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:46:57,751 INFO L495 AbstractCegarLoop]: Abstraction has 7869 states and 13126 transitions. [2022-12-13 17:46:57,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.1875) internal successors, (99), 12 states have internal predecessors, (99), 7 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2022-12-13 17:46:57,751 INFO L276 IsEmpty]: Start isEmpty. Operand 7869 states and 13126 transitions. [2022-12-13 17:46:57,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-12-13 17:46:57,754 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:46:57,754 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:46:57,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 17:46:57,754 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:46:57,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:46:57,754 INFO L85 PathProgramCache]: Analyzing trace with hash -824912493, now seen corresponding path program 1 times [2022-12-13 17:46:57,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:46:57,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7655937] [2022-12-13 17:46:57,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:46:57,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:46:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:57,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:46:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:57,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:46:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:57,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:46:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:58,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:46:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:58,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:46:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:58,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:46:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:58,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:46:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:58,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:46:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:58,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 17:46:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:58,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 17:46:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:58,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:46:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:58,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 17:46:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:58,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:46:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:58,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 17:46:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:46:58,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 17:46:58,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:46:58,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7655937] [2022-12-13 17:46:58,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7655937] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:46:58,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:46:58,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 17:46:58,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724114788] [2022-12-13 17:46:58,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:46:58,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 17:46:58,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:46:58,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 17:46:58,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:46:58,414 INFO L87 Difference]: Start difference. First operand 7869 states and 13126 transitions. Second operand has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 9 states have internal predecessors, (100), 5 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2022-12-13 17:47:22,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:47:22,510 INFO L93 Difference]: Finished difference Result 24354 states and 42017 transitions. [2022-12-13 17:47:22,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-13 17:47:22,511 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 9 states have internal predecessors, (100), 5 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 131 [2022-12-13 17:47:22,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:47:22,571 INFO L225 Difference]: With dead ends: 24354 [2022-12-13 17:47:22,571 INFO L226 Difference]: Without dead ends: 16563 [2022-12-13 17:47:22,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=725, Invalid=2031, Unknown=0, NotChecked=0, Total=2756 [2022-12-13 17:47:22,594 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 5497 mSDsluCounter, 2995 mSDsCounter, 0 mSdLazyCounter, 12878 mSolverCounterSat, 2915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5497 SdHoareTripleChecker+Valid, 3697 SdHoareTripleChecker+Invalid, 15793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2915 IncrementalHoareTripleChecker+Valid, 12878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:47:22,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5497 Valid, 3697 Invalid, 15793 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2915 Valid, 12878 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2022-12-13 17:47:22,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16563 states. [2022-12-13 17:47:25,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16563 to 13352. [2022-12-13 17:47:25,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13352 states, 10506 states have (on average 1.5687226346849419) internal successors, (16481), 10613 states have internal predecessors, (16481), 2066 states have call successors, (2066), 597 states have call predecessors, (2066), 779 states have return successors, (3687), 2229 states have call predecessors, (3687), 2061 states have call successors, (3687) [2022-12-13 17:47:25,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13352 states to 13352 states and 22234 transitions. [2022-12-13 17:47:25,836 INFO L78 Accepts]: Start accepts. Automaton has 13352 states and 22234 transitions. Word has length 131 [2022-12-13 17:47:25,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:47:25,836 INFO L495 AbstractCegarLoop]: Abstraction has 13352 states and 22234 transitions. [2022-12-13 17:47:25,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 9 states have internal predecessors, (100), 5 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2022-12-13 17:47:25,836 INFO L276 IsEmpty]: Start isEmpty. Operand 13352 states and 22234 transitions. [2022-12-13 17:47:25,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-12-13 17:47:25,838 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:47:25,838 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:47:25,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 17:47:25,839 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:47:25,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:47:25,839 INFO L85 PathProgramCache]: Analyzing trace with hash 892751695, now seen corresponding path program 1 times [2022-12-13 17:47:25,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:47:25,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606526606] [2022-12-13 17:47:25,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:47:25,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:47:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:47:26,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:47:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:47:26,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:47:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:47:26,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:47:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:47:26,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:47:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:47:26,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:47:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:47:26,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:47:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:47:26,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:47:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:47:26,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:47:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:47:26,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 17:47:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:47:26,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:47:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:47:26,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:47:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:47:26,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 17:47:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:47:26,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:47:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:47:26,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 17:47:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:47:26,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 17:47:26,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:47:26,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606526606] [2022-12-13 17:47:26,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606526606] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:47:26,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:47:26,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-12-13 17:47:26,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332370914] [2022-12-13 17:47:26,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:47:26,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 17:47:26,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:47:26,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 17:47:26,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-12-13 17:47:26,639 INFO L87 Difference]: Start difference. First operand 13352 states and 22234 transitions. Second operand has 23 states, 22 states have (on average 4.5) internal successors, (99), 17 states have internal predecessors, (99), 8 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2022-12-13 17:47:56,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:47:56,058 INFO L93 Difference]: Finished difference Result 35092 states and 59843 transitions. [2022-12-13 17:47:56,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-12-13 17:47:56,059 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.5) internal successors, (99), 17 states have internal predecessors, (99), 8 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) Word has length 130 [2022-12-13 17:47:56,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:47:56,131 INFO L225 Difference]: With dead ends: 35092 [2022-12-13 17:47:56,132 INFO L226 Difference]: Without dead ends: 21232 [2022-12-13 17:47:56,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2238 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1365, Invalid=5945, Unknown=0, NotChecked=0, Total=7310 [2022-12-13 17:47:56,176 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 8923 mSDsluCounter, 5854 mSDsCounter, 0 mSdLazyCounter, 17667 mSolverCounterSat, 3402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8923 SdHoareTripleChecker+Valid, 6364 SdHoareTripleChecker+Invalid, 21069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3402 IncrementalHoareTripleChecker+Valid, 17667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:47:56,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8923 Valid, 6364 Invalid, 21069 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3402 Valid, 17667 Invalid, 0 Unknown, 0 Unchecked, 16.2s Time] [2022-12-13 17:47:56,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21232 states. [2022-12-13 17:48:00,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21232 to 18200. [2022-12-13 17:48:00,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18200 states, 14570 states have (on average 1.5663006177076184) internal successors, (22821), 14749 states have internal predecessors, (22821), 2602 states have call successors, (2602), 721 states have call predecessors, (2602), 1027 states have return successors, (4327), 2817 states have call predecessors, (4327), 2597 states have call successors, (4327) [2022-12-13 17:48:00,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18200 states to 18200 states and 29750 transitions. [2022-12-13 17:48:00,769 INFO L78 Accepts]: Start accepts. Automaton has 18200 states and 29750 transitions. Word has length 130 [2022-12-13 17:48:00,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:48:00,769 INFO L495 AbstractCegarLoop]: Abstraction has 18200 states and 29750 transitions. [2022-12-13 17:48:00,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.5) internal successors, (99), 17 states have internal predecessors, (99), 8 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2022-12-13 17:48:00,770 INFO L276 IsEmpty]: Start isEmpty. Operand 18200 states and 29750 transitions. [2022-12-13 17:48:00,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-12-13 17:48:00,772 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:48:00,772 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:48:00,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 17:48:00,772 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:48:00,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:48:00,773 INFO L85 PathProgramCache]: Analyzing trace with hash 561290901, now seen corresponding path program 1 times [2022-12-13 17:48:00,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:48:00,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394781552] [2022-12-13 17:48:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:48:00,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:48:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:00,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:48:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:01,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:48:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:01,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:48:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:01,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:48:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:01,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:48:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:01,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:48:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:01,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:48:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:01,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:48:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:01,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 17:48:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:01,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 17:48:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:01,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:48:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:01,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 17:48:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:01,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:48:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:01,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 17:48:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 17:48:01,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:48:01,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394781552] [2022-12-13 17:48:01,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394781552] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:48:01,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:48:01,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 17:48:01,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660781162] [2022-12-13 17:48:01,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:48:01,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 17:48:01,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:48:01,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 17:48:01,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:48:01,503 INFO L87 Difference]: Start difference. First operand 18200 states and 29750 transitions. Second operand has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 9 states have internal predecessors, (100), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2022-12-13 17:48:15,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:48:15,713 INFO L93 Difference]: Finished difference Result 41577 states and 70117 transitions. [2022-12-13 17:48:15,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 17:48:15,714 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 9 states have internal predecessors, (100), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) Word has length 131 [2022-12-13 17:48:15,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:48:15,801 INFO L225 Difference]: With dead ends: 41577 [2022-12-13 17:48:15,801 INFO L226 Difference]: Without dead ends: 23457 [2022-12-13 17:48:15,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2022-12-13 17:48:15,856 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 3718 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 5237 mSolverCounterSat, 1748 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3718 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 6985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1748 IncrementalHoareTripleChecker+Valid, 5237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:48:15,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3718 Valid, 2274 Invalid, 6985 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1748 Valid, 5237 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-12-13 17:48:15,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23457 states. [2022-12-13 17:48:20,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23457 to 18248. [2022-12-13 17:48:20,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18248 states, 14618 states have (on average 1.5644411000136818) internal successors, (22869), 14797 states have internal predecessors, (22869), 2602 states have call successors, (2602), 721 states have call predecessors, (2602), 1027 states have return successors, (4327), 2817 states have call predecessors, (4327), 2597 states have call successors, (4327) [2022-12-13 17:48:20,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18248 states to 18248 states and 29798 transitions. [2022-12-13 17:48:20,392 INFO L78 Accepts]: Start accepts. Automaton has 18248 states and 29798 transitions. Word has length 131 [2022-12-13 17:48:20,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:48:20,393 INFO L495 AbstractCegarLoop]: Abstraction has 18248 states and 29798 transitions. [2022-12-13 17:48:20,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 9 states have internal predecessors, (100), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2022-12-13 17:48:20,393 INFO L276 IsEmpty]: Start isEmpty. Operand 18248 states and 29798 transitions. [2022-12-13 17:48:20,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 17:48:20,396 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:48:20,396 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:48:20,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 17:48:20,396 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:48:20,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:48:20,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1197498161, now seen corresponding path program 1 times [2022-12-13 17:48:20,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:48:20,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760872456] [2022-12-13 17:48:20,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:48:20,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:48:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:20,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:48:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:20,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:48:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:20,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:48:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:20,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:48:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:20,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:48:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:20,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:48:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:20,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:48:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:21,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:48:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:21,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:48:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:21,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 17:48:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:21,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 17:48:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:21,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:48:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:21,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:48:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:21,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:48:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:21,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 17:48:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:21,260 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:48:21,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:48:21,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760872456] [2022-12-13 17:48:21,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760872456] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:48:21,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498259107] [2022-12-13 17:48:21,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:48:21,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:48:21,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:48:21,262 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:48:21,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:48:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:21,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:48:21,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:48:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 17:48:21,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:48:21,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498259107] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:48:21,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:48:21,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [21] total 24 [2022-12-13 17:48:21,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657683731] [2022-12-13 17:48:21,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:48:21,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:48:21,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:48:21,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:48:21,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2022-12-13 17:48:21,670 INFO L87 Difference]: Start difference. First operand 18248 states and 29798 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-12-13 17:48:26,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:48:26,843 INFO L93 Difference]: Finished difference Result 18469 states and 30197 transitions. [2022-12-13 17:48:26,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:48:26,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 134 [2022-12-13 17:48:26,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:48:26,898 INFO L225 Difference]: With dead ends: 18469 [2022-12-13 17:48:26,898 INFO L226 Difference]: Without dead ends: 18454 [2022-12-13 17:48:26,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2022-12-13 17:48:26,910 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 862 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:48:26,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 1624 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 17:48:26,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18454 states. [2022-12-13 17:48:31,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18454 to 18266. [2022-12-13 17:48:31,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18266 states, 14636 states have (on average 1.5637469253894507) internal successors, (22887), 14815 states have internal predecessors, (22887), 2602 states have call successors, (2602), 721 states have call predecessors, (2602), 1027 states have return successors, (4327), 2817 states have call predecessors, (4327), 2597 states have call successors, (4327) [2022-12-13 17:48:31,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18266 states to 18266 states and 29816 transitions. [2022-12-13 17:48:31,416 INFO L78 Accepts]: Start accepts. Automaton has 18266 states and 29816 transitions. Word has length 134 [2022-12-13 17:48:31,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:48:31,416 INFO L495 AbstractCegarLoop]: Abstraction has 18266 states and 29816 transitions. [2022-12-13 17:48:31,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-12-13 17:48:31,416 INFO L276 IsEmpty]: Start isEmpty. Operand 18266 states and 29816 transitions. [2022-12-13 17:48:31,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-13 17:48:31,419 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:48:31,419 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:48:31,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:48:31,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 17:48:31,621 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:48:31,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:48:31,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1210105868, now seen corresponding path program 1 times [2022-12-13 17:48:31,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:48:31,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111709033] [2022-12-13 17:48:31,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:48:31,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:48:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:31,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:48:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:31,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:48:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:31,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:48:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:31,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:48:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:31,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:48:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:32,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:48:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:32,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:48:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:32,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:48:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:32,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:48:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:32,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 17:48:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:32,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 17:48:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:32,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:48:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:32,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:48:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:32,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:48:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:32,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 17:48:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:32,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 17:48:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:48:32,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 17:48:32,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:48:32,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111709033] [2022-12-13 17:48:32,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111709033] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:48:32,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:48:32,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 17:48:32,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325399808] [2022-12-13 17:48:32,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:48:32,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 17:48:32,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:48:32,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 17:48:32,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-12-13 17:48:32,187 INFO L87 Difference]: Start difference. First operand 18266 states and 29816 transitions. Second operand has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-13 17:48:57,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:48:57,107 INFO L93 Difference]: Finished difference Result 51568 states and 89557 transitions. [2022-12-13 17:48:57,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-12-13 17:48:57,107 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) Word has length 140 [2022-12-13 17:48:57,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:48:57,268 INFO L225 Difference]: With dead ends: 51568 [2022-12-13 17:48:57,268 INFO L226 Difference]: Without dead ends: 33388 [2022-12-13 17:48:57,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1215 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=664, Invalid=2996, Unknown=0, NotChecked=0, Total=3660 [2022-12-13 17:48:57,344 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 4818 mSDsluCounter, 2801 mSDsCounter, 0 mSdLazyCounter, 7257 mSolverCounterSat, 1902 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4831 SdHoareTripleChecker+Valid, 3409 SdHoareTripleChecker+Invalid, 9159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1902 IncrementalHoareTripleChecker+Valid, 7257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-12-13 17:48:57,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4831 Valid, 3409 Invalid, 9159 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1902 Valid, 7257 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2022-12-13 17:48:57,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33388 states. [2022-12-13 17:49:04,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33388 to 28332. [2022-12-13 17:49:04,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28332 states, 22599 states have (on average 1.5509535820169034) internal successors, (35050), 22949 states have internal predecessors, (35050), 4086 states have call successors, (4086), 1175 states have call predecessors, (4086), 1646 states have return successors, (7644), 4383 states have call predecessors, (7644), 4081 states have call successors, (7644) [2022-12-13 17:49:04,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28332 states to 28332 states and 46780 transitions. [2022-12-13 17:49:04,847 INFO L78 Accepts]: Start accepts. Automaton has 28332 states and 46780 transitions. Word has length 140 [2022-12-13 17:49:04,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:49:04,847 INFO L495 AbstractCegarLoop]: Abstraction has 28332 states and 46780 transitions. [2022-12-13 17:49:04,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-13 17:49:04,848 INFO L276 IsEmpty]: Start isEmpty. Operand 28332 states and 46780 transitions. [2022-12-13 17:49:04,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-12-13 17:49:04,851 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:49:04,851 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:49:04,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 17:49:04,851 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:49:04,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:49:04,852 INFO L85 PathProgramCache]: Analyzing trace with hash 358441107, now seen corresponding path program 1 times [2022-12-13 17:49:04,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:49:04,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940438935] [2022-12-13 17:49:04,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:49:04,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:49:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:04,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:49:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:05,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:49:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:05,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:49:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:05,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:49:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:05,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:49:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:05,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:49:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:05,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:49:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:05,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:49:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:05,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:49:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:05,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 17:49:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:05,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:49:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:05,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:49:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:05,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 17:49:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:05,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:49:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:05,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 17:49:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:05,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 17:49:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:05,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 17:49:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:05,748 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:49:05,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:49:05,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940438935] [2022-12-13 17:49:05,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940438935] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:49:05,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059797766] [2022-12-13 17:49:05,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:49:05,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:49:05,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:49:05,750 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:49:05,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:49:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:05,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 17:49:05,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:49:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 17:49:06,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:49:06,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059797766] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:49:06,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:49:06,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [21] total 27 [2022-12-13 17:49:06,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31899918] [2022-12-13 17:49:06,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:49:06,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:49:06,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:49:06,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:49:06,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-12-13 17:49:06,621 INFO L87 Difference]: Start difference. First operand 28332 states and 46780 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 5 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-12-13 17:49:24,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:49:24,414 INFO L93 Difference]: Finished difference Result 74964 states and 125294 transitions. [2022-12-13 17:49:24,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 17:49:24,415 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 5 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 152 [2022-12-13 17:49:24,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:49:24,614 INFO L225 Difference]: With dead ends: 74964 [2022-12-13 17:49:24,614 INFO L226 Difference]: Without dead ends: 46710 [2022-12-13 17:49:24,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2022-12-13 17:49:24,705 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 4187 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 5367 mSolverCounterSat, 882 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4325 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 6249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 882 IncrementalHoareTripleChecker+Valid, 5367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:49:24,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4325 Valid, 2275 Invalid, 6249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [882 Valid, 5367 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 17:49:24,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46710 states. [2022-12-13 17:49:37,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46710 to 44648. [2022-12-13 17:49:37,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44648 states, 35753 states have (on average 1.5531004391239895) internal successors, (55528), 36281 states have internal predecessors, (55528), 6268 states have call successors, (6268), 1867 states have call predecessors, (6268), 2626 states have return successors, (12718), 6675 states have call predecessors, (12718), 6263 states have call successors, (12718) [2022-12-13 17:49:37,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44648 states to 44648 states and 74514 transitions. [2022-12-13 17:49:37,544 INFO L78 Accepts]: Start accepts. Automaton has 44648 states and 74514 transitions. Word has length 152 [2022-12-13 17:49:37,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:49:37,545 INFO L495 AbstractCegarLoop]: Abstraction has 44648 states and 74514 transitions. [2022-12-13 17:49:37,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 5 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-12-13 17:49:37,545 INFO L276 IsEmpty]: Start isEmpty. Operand 44648 states and 74514 transitions. [2022-12-13 17:49:37,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-12-13 17:49:37,549 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:49:37,549 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:49:37,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 17:49:37,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 17:49:37,751 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:49:37,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:49:37,753 INFO L85 PathProgramCache]: Analyzing trace with hash 914241307, now seen corresponding path program 1 times [2022-12-13 17:49:37,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:49:37,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325651145] [2022-12-13 17:49:37,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:49:37,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:49:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:37,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:49:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:37,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:49:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:37,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:49:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:38,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:49:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:38,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:49:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:38,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:49:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:38,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:49:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:38,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:49:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:38,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:49:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:38,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 17:49:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:38,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:49:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:38,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:49:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:38,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 17:49:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:38,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:49:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:38,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 17:49:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:38,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 17:49:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:38,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 17:49:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:49:38,393 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 17:49:38,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:49:38,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325651145] [2022-12-13 17:49:38,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325651145] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:49:38,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:49:38,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 17:49:38,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582547184] [2022-12-13 17:49:38,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:49:38,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 17:49:38,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:49:38,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 17:49:38,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:49:38,394 INFO L87 Difference]: Start difference. First operand 44648 states and 74514 transitions. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-13 17:50:33,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:50:33,351 INFO L93 Difference]: Finished difference Result 148259 states and 287497 transitions. [2022-12-13 17:50:33,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-13 17:50:33,352 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 3 states have call successors, (17) Word has length 156 [2022-12-13 17:50:33,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:50:34,146 INFO L225 Difference]: With dead ends: 148259 [2022-12-13 17:50:34,146 INFO L226 Difference]: Without dead ends: 103689 [2022-12-13 17:50:34,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=463, Invalid=2189, Unknown=0, NotChecked=0, Total=2652 [2022-12-13 17:50:34,460 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 6325 mSDsluCounter, 3211 mSDsCounter, 0 mSdLazyCounter, 10337 mSolverCounterSat, 3245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6326 SdHoareTripleChecker+Valid, 3804 SdHoareTripleChecker+Invalid, 13582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3245 IncrementalHoareTripleChecker+Valid, 10337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:50:34,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6326 Valid, 3804 Invalid, 13582 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3245 Valid, 10337 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2022-12-13 17:50:34,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103689 states. [2022-12-13 17:51:01,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103689 to 84416. [2022-12-13 17:51:01,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84416 states, 66709 states have (on average 1.5371239263067953) internal successors, (102540), 68139 states have internal predecessors, (102540), 12770 states have call successors, (12770), 3371 states have call predecessors, (12770), 4936 states have return successors, (34188), 13389 states have call predecessors, (34188), 12765 states have call successors, (34188) [2022-12-13 17:51:02,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84416 states to 84416 states and 149498 transitions. [2022-12-13 17:51:02,485 INFO L78 Accepts]: Start accepts. Automaton has 84416 states and 149498 transitions. Word has length 156 [2022-12-13 17:51:02,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:02,486 INFO L495 AbstractCegarLoop]: Abstraction has 84416 states and 149498 transitions. [2022-12-13 17:51:02,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-13 17:51:02,486 INFO L276 IsEmpty]: Start isEmpty. Operand 84416 states and 149498 transitions. [2022-12-13 17:51:02,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-12-13 17:51:02,496 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:02,496 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:51:02,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 17:51:02,497 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:51:02,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:02,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1526776630, now seen corresponding path program 1 times [2022-12-13 17:51:02,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:51:02,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144217730] [2022-12-13 17:51:02,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:02,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:51:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:02,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:51:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:02,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:51:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:02,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:51:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:02,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:51:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:02,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:51:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:03,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:51:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:03,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:51:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:03,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:51:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:03,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:51:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:03,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 17:51:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:03,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:51:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:03,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:51:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:03,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:51:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:03,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 17:51:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:03,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:51:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:03,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 17:51:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:03,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 17:51:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:03,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 17:51:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:03,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 17:51:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:03,206 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 17:51:03,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:51:03,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144217730] [2022-12-13 17:51:03,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144217730] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:51:03,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:51:03,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 17:51:03,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130902566] [2022-12-13 17:51:03,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:51:03,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 17:51:03,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:51:03,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 17:51:03,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:51:03,208 INFO L87 Difference]: Start difference. First operand 84416 states and 149498 transitions. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 5 states have internal predecessors, (123), 5 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-12-13 17:52:38,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:52:38,493 INFO L93 Difference]: Finished difference Result 285013 states and 615924 transitions. [2022-12-13 17:52:38,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 17:52:38,494 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 5 states have internal predecessors, (123), 5 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 173 [2022-12-13 17:52:38,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:52:40,657 INFO L225 Difference]: With dead ends: 285013 [2022-12-13 17:52:40,657 INFO L226 Difference]: Without dead ends: 200675 [2022-12-13 17:52:41,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2022-12-13 17:52:41,685 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 4929 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 3771 mSolverCounterSat, 1778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5012 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 5549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1778 IncrementalHoareTripleChecker+Valid, 3771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:52:41,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5012 Valid, 2184 Invalid, 5549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1778 Valid, 3771 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-12-13 17:52:41,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200675 states. [2022-12-13 17:53:39,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200675 to 163634. [2022-12-13 17:53:39,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163634 states, 128426 states have (on average 1.534883902013611) internal successors, (197119), 131660 states have internal predecessors, (197119), 25542 states have call successors, (25542), 6395 states have call predecessors, (25542), 9665 states have return successors, (81404), 26766 states have call predecessors, (81404), 25537 states have call successors, (81404) [2022-12-13 17:53:40,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163634 states to 163634 states and 304065 transitions. [2022-12-13 17:53:41,006 INFO L78 Accepts]: Start accepts. Automaton has 163634 states and 304065 transitions. Word has length 173 [2022-12-13 17:53:41,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:53:41,007 INFO L495 AbstractCegarLoop]: Abstraction has 163634 states and 304065 transitions. [2022-12-13 17:53:41,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 5 states have internal predecessors, (123), 5 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-12-13 17:53:41,007 INFO L276 IsEmpty]: Start isEmpty. Operand 163634 states and 304065 transitions. [2022-12-13 17:53:41,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-12-13 17:53:41,015 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:53:41,015 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:53:41,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 17:53:41,016 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:53:41,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:41,016 INFO L85 PathProgramCache]: Analyzing trace with hash -342307788, now seen corresponding path program 1 times [2022-12-13 17:53:41,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:41,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082525165] [2022-12-13 17:53:41,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:41,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:53:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:53:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:53:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:53:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:53:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:53:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:53:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:53:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:53:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 17:53:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:53:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:53:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:53:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 17:53:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:53:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 17:53:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 17:53:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 17:53:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 17:53:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:41,912 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 17:53:41,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:53:41,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082525165] [2022-12-13 17:53:41,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082525165] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:53:41,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476029457] [2022-12-13 17:53:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:41,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:53:41,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:41,914 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:53:41,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:53:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:42,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 1838 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 17:53:42,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:42,166 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 17:53:42,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:53:42,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476029457] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:53:42,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:53:42,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [19] total 22 [2022-12-13 17:53:42,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283933942] [2022-12-13 17:53:42,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:53:42,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:53:42,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:53:42,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:53:42,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-12-13 17:53:42,168 INFO L87 Difference]: Start difference. First operand 163634 states and 304065 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-12-13 17:54:37,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:54:37,297 INFO L93 Difference]: Finished difference Result 165281 states and 309474 transitions. [2022-12-13 17:54:37,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:54:37,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 171 [2022-12-13 17:54:37,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:54:38,510 INFO L225 Difference]: With dead ends: 165281 [2022-12-13 17:54:38,511 INFO L226 Difference]: Without dead ends: 165262 [2022-12-13 17:54:38,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2022-12-13 17:54:38,685 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 70 mSDsluCounter, 2790 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 3742 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:54:38,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 3742 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:54:38,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165262 states. [2022-12-13 17:55:32,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165262 to 163877. [2022-12-13 17:55:32,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163877 states, 128669 states have (on average 1.532288274564969) internal successors, (197158), 131903 states have internal predecessors, (197158), 25542 states have call successors, (25542), 6395 states have call predecessors, (25542), 9665 states have return successors, (81404), 26766 states have call predecessors, (81404), 25537 states have call successors, (81404) [2022-12-13 17:55:34,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163877 states to 163877 states and 304104 transitions. [2022-12-13 17:55:34,292 INFO L78 Accepts]: Start accepts. Automaton has 163877 states and 304104 transitions. Word has length 171 [2022-12-13 17:55:34,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:55:34,292 INFO L495 AbstractCegarLoop]: Abstraction has 163877 states and 304104 transitions. [2022-12-13 17:55:34,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-12-13 17:55:34,292 INFO L276 IsEmpty]: Start isEmpty. Operand 163877 states and 304104 transitions. [2022-12-13 17:55:34,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-12-13 17:55:34,303 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:55:34,303 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:55:34,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:55:34,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-12-13 17:55:34,505 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:55:34,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:55:34,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1599318214, now seen corresponding path program 1 times [2022-12-13 17:55:34,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:55:34,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405331663] [2022-12-13 17:55:34,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:55:34,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:55:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:34,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:55:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:34,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:55:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:34,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:55:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:34,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:55:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:34,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:55:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:35,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:55:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:35,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:55:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:35,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:55:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:35,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:55:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:35,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 17:55:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:35,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:55:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:35,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:55:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:35,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:55:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:35,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 17:55:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:35,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:55:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:35,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 17:55:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:35,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 17:55:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:35,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 17:55:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:35,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 17:55:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:35,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 17:55:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:35,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 17:55:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:35,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 17:55:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:35,338 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-12-13 17:55:35,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:55:35,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405331663] [2022-12-13 17:55:35,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405331663] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:55:35,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390212638] [2022-12-13 17:55:35,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:55:35,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:55:35,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:55:35,340 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:55:35,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f5f304-0cd0-48da-bf96-2cf218107a6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:55:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:35,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 1913 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:55:35,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:55:35,693 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-13 17:55:35,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:55:35,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390212638] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:55:35,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:55:35,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2022-12-13 17:55:35,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463515980] [2022-12-13 17:55:35,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:55:35,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:55:35,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:55:35,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:55:35,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:55:35,695 INFO L87 Difference]: Start difference. First operand 163877 states and 304104 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22)