./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/mem_slave_tlm.5.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_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/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_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/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_c168492f-78f0-4ae7-8d07-61525cf09155/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 067fe51884f92ae3774f211cf9d4291369df85b7690d3eee54cd23a70c2ea301 --- 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 18:03:13,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:03:13,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:03:13,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:03:13,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:03:13,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:03:13,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:03:13,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:03:13,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:03:13,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:03:13,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:03:13,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:03:13,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:03:13,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:03:13,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:03:13,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:03:13,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:03:13,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:03:13,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:03:13,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:03:13,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:03:13,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:03:13,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:03:13,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:03:13,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:03:13,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:03:13,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:03:13,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:03:13,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:03:13,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:03:13,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:03:13,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:03:13,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:03:13,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:03:13,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:03:13,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:03:13,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:03:13,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:03:13,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:03:13,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:03:13,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:03:13,474 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 18:03:13,490 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:03:13,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:03:13,491 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:03:13,491 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:03:13,491 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:03:13,492 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:03:13,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:03:13,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:03:13,492 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:03:13,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:03:13,493 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:03:13,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:03:13,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:03:13,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:03:13,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:03:13,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:03:13,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:03:13,493 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:03:13,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:03:13,494 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:03:13,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:03:13,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:03:13,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:03:13,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:03:13,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:03:13,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:03:13,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:03:13,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:03:13,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:03:13,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:03:13,495 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:03:13,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:03:13,495 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:03:13,495 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:03:13,495 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:03:13,496 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_c168492f-78f0-4ae7-8d07-61525cf09155/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 067fe51884f92ae3774f211cf9d4291369df85b7690d3eee54cd23a70c2ea301 [2022-12-13 18:03:13,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:03:13,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:03:13,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:03:13,708 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:03:13,708 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:03:13,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c [2022-12-13 18:03:16,283 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:03:16,477 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:03:16,477 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c [2022-12-13 18:03:16,487 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/data/67246ad66/3fdb7b0299764a8fbbb2885edb45e92f/FLAG54e8f840f [2022-12-13 18:03:16,855 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/data/67246ad66/3fdb7b0299764a8fbbb2885edb45e92f [2022-12-13 18:03:16,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:03:16,859 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:03:16,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:03:16,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:03:16,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:03:16,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:03:16" (1/1) ... [2022-12-13 18:03:16,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e62faf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:03:16, skipping insertion in model container [2022-12-13 18:03:16,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:03:16" (1/1) ... [2022-12-13 18:03:16,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:03:16,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:03:17,018 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_c168492f-78f0-4ae7-8d07-61525cf09155/sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c[646,659] [2022-12-13 18:03:17,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:03:17,126 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:03:17,137 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_c168492f-78f0-4ae7-8d07-61525cf09155/sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c[646,659] [2022-12-13 18:03:17,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:03:17,197 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:03:17,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:03:17 WrapperNode [2022-12-13 18:03:17,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:03:17,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:03:17,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:03:17,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:03:17,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:03:17" (1/1) ... [2022-12-13 18:03:17,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:03:17" (1/1) ... [2022-12-13 18:03:17,241 INFO L138 Inliner]: procedures = 19, calls = 18, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 866 [2022-12-13 18:03:17,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:03:17,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:03:17,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:03:17,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:03:17,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:03:17" (1/1) ... [2022-12-13 18:03:17,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:03:17" (1/1) ... [2022-12-13 18:03:17,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:03:17" (1/1) ... [2022-12-13 18:03:17,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:03:17" (1/1) ... [2022-12-13 18:03:17,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:03:17" (1/1) ... [2022-12-13 18:03:17,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:03:17" (1/1) ... [2022-12-13 18:03:17,268 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:03:17" (1/1) ... [2022-12-13 18:03:17,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:03:17" (1/1) ... [2022-12-13 18:03:17,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:03:17,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:03:17,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:03:17,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:03:17,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:03:17" (1/1) ... [2022-12-13 18:03:17,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:03:17,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:03:17,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:03:17,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:03:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:03:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:03:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-12-13 18:03:17,335 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-12-13 18:03:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:03:17,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:03:17,409 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:03:17,411 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:03:17,992 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:03:17,999 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:03:17,999 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-12-13 18:03:18,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:03:18 BoogieIcfgContainer [2022-12-13 18:03:18,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:03:18,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:03:18,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:03:18,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:03:18,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:03:16" (1/3) ... [2022-12-13 18:03:18,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b766a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:03:18, skipping insertion in model container [2022-12-13 18:03:18,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:03:17" (2/3) ... [2022-12-13 18:03:18,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b766a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:03:18, skipping insertion in model container [2022-12-13 18:03:18,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:03:18" (3/3) ... [2022-12-13 18:03:18,008 INFO L112 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.5.cil.c [2022-12-13 18:03:18,022 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:03:18,022 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 18:03:18,068 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:03:18,073 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;@5f51110c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:03:18,074 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 18:03:18,077 INFO L276 IsEmpty]: Start isEmpty. Operand has 279 states, 271 states have (on average 1.8560885608856088) internal successors, (503), 277 states have internal predecessors, (503), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 18:03:18,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-13 18:03:18,086 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:18,087 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] [2022-12-13 18:03:18,087 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:03:18,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:18,091 INFO L85 PathProgramCache]: Analyzing trace with hash 193087859, now seen corresponding path program 1 times [2022-12-13 18:03:18,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:03:18,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001782084] [2022-12-13 18:03:18,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:18,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:03:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:18,299 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 18:03:18,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:03:18,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001782084] [2022-12-13 18:03:18,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001782084] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:18,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:03:18,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:03:18,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802159139] [2022-12-13 18:03:18,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:18,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:03:18,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:03:18,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:03:18,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:03:18,337 INFO L87 Difference]: Start difference. First operand has 279 states, 271 states have (on average 1.8560885608856088) internal successors, (503), 277 states have internal predecessors, (503), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:18,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:03:18,614 INFO L93 Difference]: Finished difference Result 736 states and 1353 transitions. [2022-12-13 18:03:18,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:03:18,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-12-13 18:03:18,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:03:18,625 INFO L225 Difference]: With dead ends: 736 [2022-12-13 18:03:18,625 INFO L226 Difference]: Without dead ends: 454 [2022-12-13 18:03:18,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:03:18,630 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 271 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:03:18,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 797 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:03:18,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-12-13 18:03:18,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 441. [2022-12-13 18:03:18,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 435 states have (on average 1.6045977011494252) internal successors, (698), 439 states have internal predecessors, (698), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:18,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 703 transitions. [2022-12-13 18:03:18,680 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 703 transitions. Word has length 29 [2022-12-13 18:03:18,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:03:18,681 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 703 transitions. [2022-12-13 18:03:18,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:18,681 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 703 transitions. [2022-12-13 18:03:18,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-12-13 18:03:18,685 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:18,685 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] [2022-12-13 18:03:18,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:03:18,685 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:03:18,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:18,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1865699697, now seen corresponding path program 1 times [2022-12-13 18:03:18,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:03:18,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728535021] [2022-12-13 18:03:18,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:18,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:03:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:18,749 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 18:03:18,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:03:18,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728535021] [2022-12-13 18:03:18,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728535021] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:18,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:03:18,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:03:18,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617382374] [2022-12-13 18:03:18,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:18,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:03:18,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:03:18,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:03:18,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:03:18,753 INFO L87 Difference]: Start difference. First operand 441 states and 703 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:18,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:03:18,859 INFO L93 Difference]: Finished difference Result 1161 states and 1877 transitions. [2022-12-13 18:03:18,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:03:18,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-12-13 18:03:18,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:03:18,863 INFO L225 Difference]: With dead ends: 1161 [2022-12-13 18:03:18,863 INFO L226 Difference]: Without dead ends: 734 [2022-12-13 18:03:18,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:03:18,865 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 334 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:03:18,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1040 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:03:18,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2022-12-13 18:03:18,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 721. [2022-12-13 18:03:18,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 715 states have (on average 1.6391608391608392) internal successors, (1172), 719 states have internal predecessors, (1172), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:18,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1177 transitions. [2022-12-13 18:03:18,896 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1177 transitions. Word has length 41 [2022-12-13 18:03:18,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:03:18,896 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 1177 transitions. [2022-12-13 18:03:18,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:18,896 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1177 transitions. [2022-12-13 18:03:18,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 18:03:18,897 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:18,898 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] [2022-12-13 18:03:18,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:03:18,898 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:03:18,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:18,898 INFO L85 PathProgramCache]: Analyzing trace with hash 614817242, now seen corresponding path program 1 times [2022-12-13 18:03:18,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:03:18,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341745285] [2022-12-13 18:03:18,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:18,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:03:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:18,942 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 18:03:18,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:03:18,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341745285] [2022-12-13 18:03:18,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341745285] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:18,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:03:18,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:03:18,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846481758] [2022-12-13 18:03:18,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:18,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:03:18,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:03:18,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:03:18,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:03:18,944 INFO L87 Difference]: Start difference. First operand 721 states and 1177 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:19,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:03:19,003 INFO L93 Difference]: Finished difference Result 1809 states and 2948 transitions. [2022-12-13 18:03:19,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:03:19,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-12-13 18:03:19,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:03:19,009 INFO L225 Difference]: With dead ends: 1809 [2022-12-13 18:03:19,009 INFO L226 Difference]: Without dead ends: 1113 [2022-12-13 18:03:19,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:03:19,011 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 361 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:03:19,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 821 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:03:19,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2022-12-13 18:03:19,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1102. [2022-12-13 18:03:19,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1096 states have (on average 1.6259124087591241) internal successors, (1782), 1100 states have internal predecessors, (1782), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:19,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1787 transitions. [2022-12-13 18:03:19,044 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1787 transitions. Word has length 42 [2022-12-13 18:03:19,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:03:19,045 INFO L495 AbstractCegarLoop]: Abstraction has 1102 states and 1787 transitions. [2022-12-13 18:03:19,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:19,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1787 transitions. [2022-12-13 18:03:19,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-13 18:03:19,046 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:19,046 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] [2022-12-13 18:03:19,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:03:19,047 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:03:19,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:19,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2063798548, now seen corresponding path program 1 times [2022-12-13 18:03:19,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:03:19,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798154219] [2022-12-13 18:03:19,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:19,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:03:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:19,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:03:19,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:03:19,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798154219] [2022-12-13 18:03:19,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798154219] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:19,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:03:19,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:03:19,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582886868] [2022-12-13 18:03:19,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:19,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:03:19,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:03:19,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:03:19,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:03:19,111 INFO L87 Difference]: Start difference. First operand 1102 states and 1787 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:19,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:03:19,392 INFO L93 Difference]: Finished difference Result 3042 states and 4911 transitions. [2022-12-13 18:03:19,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:03:19,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-12-13 18:03:19,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:03:19,400 INFO L225 Difference]: With dead ends: 3042 [2022-12-13 18:03:19,401 INFO L226 Difference]: Without dead ends: 1965 [2022-12-13 18:03:19,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:03:19,404 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 592 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:03:19,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 1606 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:03:19,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2022-12-13 18:03:19,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1732. [2022-12-13 18:03:19,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1726 states have (on average 1.6025492468134415) internal successors, (2766), 1730 states have internal predecessors, (2766), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:19,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2771 transitions. [2022-12-13 18:03:19,501 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2771 transitions. Word has length 48 [2022-12-13 18:03:19,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:03:19,501 INFO L495 AbstractCegarLoop]: Abstraction has 1732 states and 2771 transitions. [2022-12-13 18:03:19,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:19,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2771 transitions. [2022-12-13 18:03:19,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-13 18:03:19,503 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:19,503 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] [2022-12-13 18:03:19,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:03:19,503 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:03:19,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:19,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1086798560, now seen corresponding path program 1 times [2022-12-13 18:03:19,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:03:19,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960143221] [2022-12-13 18:03:19,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:19,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:03:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:19,564 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 18:03:19,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:03:19,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960143221] [2022-12-13 18:03:19,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960143221] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:19,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:03:19,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:03:19,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944681912] [2022-12-13 18:03:19,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:19,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:03:19,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:03:19,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:03:19,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:03:19,567 INFO L87 Difference]: Start difference. First operand 1732 states and 2771 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:19,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:03:19,980 INFO L93 Difference]: Finished difference Result 5153 states and 8152 transitions. [2022-12-13 18:03:19,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:03:19,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-12-13 18:03:19,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:03:19,993 INFO L225 Difference]: With dead ends: 5153 [2022-12-13 18:03:19,993 INFO L226 Difference]: Without dead ends: 3440 [2022-12-13 18:03:19,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:03:19,997 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 758 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:03:19,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 1088 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:03:20,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3440 states. [2022-12-13 18:03:20,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3440 to 3058. [2022-12-13 18:03:20,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3058 states, 3052 states have (on average 1.577653997378768) internal successors, (4815), 3056 states have internal predecessors, (4815), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:20,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3058 states to 3058 states and 4820 transitions. [2022-12-13 18:03:20,157 INFO L78 Accepts]: Start accepts. Automaton has 3058 states and 4820 transitions. Word has length 53 [2022-12-13 18:03:20,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:03:20,157 INFO L495 AbstractCegarLoop]: Abstraction has 3058 states and 4820 transitions. [2022-12-13 18:03:20,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:20,158 INFO L276 IsEmpty]: Start isEmpty. Operand 3058 states and 4820 transitions. [2022-12-13 18:03:20,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-13 18:03:20,159 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:20,159 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] [2022-12-13 18:03:20,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:03:20,160 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:03:20,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:20,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1057985577, now seen corresponding path program 1 times [2022-12-13 18:03:20,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:03:20,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561030037] [2022-12-13 18:03:20,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:20,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:03:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:20,213 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 18:03:20,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:03:20,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561030037] [2022-12-13 18:03:20,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561030037] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:20,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:03:20,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:03:20,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955835528] [2022-12-13 18:03:20,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:20,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:03:20,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:03:20,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:03:20,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:03:20,215 INFO L87 Difference]: Start difference. First operand 3058 states and 4820 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:20,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:03:20,412 INFO L93 Difference]: Finished difference Result 7193 states and 11301 transitions. [2022-12-13 18:03:20,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:03:20,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-12-13 18:03:20,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:03:20,422 INFO L225 Difference]: With dead ends: 7193 [2022-12-13 18:03:20,422 INFO L226 Difference]: Without dead ends: 4158 [2022-12-13 18:03:20,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:03:20,426 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 376 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:03:20,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 728 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:03:20,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4158 states. [2022-12-13 18:03:20,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4158 to 3974. [2022-12-13 18:03:20,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3974 states, 3968 states have (on average 1.5597278225806452) internal successors, (6189), 3972 states have internal predecessors, (6189), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:20,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3974 states to 3974 states and 6194 transitions. [2022-12-13 18:03:20,597 INFO L78 Accepts]: Start accepts. Automaton has 3974 states and 6194 transitions. Word has length 53 [2022-12-13 18:03:20,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:03:20,597 INFO L495 AbstractCegarLoop]: Abstraction has 3974 states and 6194 transitions. [2022-12-13 18:03:20,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:20,597 INFO L276 IsEmpty]: Start isEmpty. Operand 3974 states and 6194 transitions. [2022-12-13 18:03:20,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-13 18:03:20,599 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:20,599 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] [2022-12-13 18:03:20,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:03:20,599 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:03:20,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:20,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1920778764, now seen corresponding path program 1 times [2022-12-13 18:03:20,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:03:20,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952647902] [2022-12-13 18:03:20,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:20,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:03:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:20,645 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 18:03:20,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:03:20,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952647902] [2022-12-13 18:03:20,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952647902] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:20,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:03:20,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:03:20,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723899885] [2022-12-13 18:03:20,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:20,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:03:20,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:03:20,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:03:20,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:03:20,648 INFO L87 Difference]: Start difference. First operand 3974 states and 6194 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:21,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:03:21,006 INFO L93 Difference]: Finished difference Result 9562 states and 15028 transitions. [2022-12-13 18:03:21,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:03:21,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-13 18:03:21,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:03:21,029 INFO L225 Difference]: With dead ends: 9562 [2022-12-13 18:03:21,029 INFO L226 Difference]: Without dead ends: 5611 [2022-12-13 18:03:21,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:03:21,032 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 258 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:03:21,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 897 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:03:21,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5611 states. [2022-12-13 18:03:21,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5611 to 4818. [2022-12-13 18:03:21,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4818 states, 4812 states have (on average 1.5045719035743974) internal successors, (7240), 4816 states have internal predecessors, (7240), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:21,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4818 states to 4818 states and 7245 transitions. [2022-12-13 18:03:21,188 INFO L78 Accepts]: Start accepts. Automaton has 4818 states and 7245 transitions. Word has length 62 [2022-12-13 18:03:21,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:03:21,188 INFO L495 AbstractCegarLoop]: Abstraction has 4818 states and 7245 transitions. [2022-12-13 18:03:21,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:21,189 INFO L276 IsEmpty]: Start isEmpty. Operand 4818 states and 7245 transitions. [2022-12-13 18:03:21,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-13 18:03:21,190 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:21,190 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 18:03:21,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:03:21,190 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:03:21,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:21,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1239764768, now seen corresponding path program 1 times [2022-12-13 18:03:21,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:03:21,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114191746] [2022-12-13 18:03:21,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:21,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:03:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:21,232 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 18:03:21,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:03:21,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114191746] [2022-12-13 18:03:21,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114191746] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:21,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:03:21,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:03:21,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127812340] [2022-12-13 18:03:21,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:21,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:03:21,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:03:21,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:03:21,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:03:21,234 INFO L87 Difference]: Start difference. First operand 4818 states and 7245 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:21,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:03:21,475 INFO L93 Difference]: Finished difference Result 9479 states and 14267 transitions. [2022-12-13 18:03:21,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:03:21,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-12-13 18:03:21,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:03:21,485 INFO L225 Difference]: With dead ends: 9479 [2022-12-13 18:03:21,485 INFO L226 Difference]: Without dead ends: 4684 [2022-12-13 18:03:21,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:03:21,491 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 353 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:03:21,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 451 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:03:21,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4684 states. [2022-12-13 18:03:21,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4684 to 4684. [2022-12-13 18:03:21,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4684 states, 4678 states have (on average 1.4833262077811031) internal successors, (6939), 4682 states have internal predecessors, (6939), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:21,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4684 states to 4684 states and 6944 transitions. [2022-12-13 18:03:21,649 INFO L78 Accepts]: Start accepts. Automaton has 4684 states and 6944 transitions. Word has length 64 [2022-12-13 18:03:21,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:03:21,649 INFO L495 AbstractCegarLoop]: Abstraction has 4684 states and 6944 transitions. [2022-12-13 18:03:21,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:21,650 INFO L276 IsEmpty]: Start isEmpty. Operand 4684 states and 6944 transitions. [2022-12-13 18:03:21,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 18:03:21,652 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:21,652 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 18:03:21,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:03:21,653 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:03:21,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:21,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1801528906, now seen corresponding path program 1 times [2022-12-13 18:03:21,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:03:21,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608912796] [2022-12-13 18:03:21,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:21,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:03:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:21,703 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 18:03:21,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:03:21,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608912796] [2022-12-13 18:03:21,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608912796] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:21,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:03:21,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:03:21,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419893415] [2022-12-13 18:03:21,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:21,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:03:21,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:03:21,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:03:21,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:03:21,705 INFO L87 Difference]: Start difference. First operand 4684 states and 6944 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:21,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:03:21,988 INFO L93 Difference]: Finished difference Result 10012 states and 15006 transitions. [2022-12-13 18:03:21,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:03:21,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-13 18:03:21,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:03:21,999 INFO L225 Difference]: With dead ends: 10012 [2022-12-13 18:03:21,999 INFO L226 Difference]: Without dead ends: 5351 [2022-12-13 18:03:22,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:03:22,003 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 317 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:03:22,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 1018 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:03:22,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5351 states. [2022-12-13 18:03:22,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5351 to 3586. [2022-12-13 18:03:22,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3586 states, 3580 states have (on average 1.497486033519553) internal successors, (5361), 3584 states have internal predecessors, (5361), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:22,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 5366 transitions. [2022-12-13 18:03:22,197 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 5366 transitions. Word has length 65 [2022-12-13 18:03:22,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:03:22,197 INFO L495 AbstractCegarLoop]: Abstraction has 3586 states and 5366 transitions. [2022-12-13 18:03:22,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:22,197 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 5366 transitions. [2022-12-13 18:03:22,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 18:03:22,200 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:22,200 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 18:03:22,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:03:22,200 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:03:22,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:22,201 INFO L85 PathProgramCache]: Analyzing trace with hash -106317501, now seen corresponding path program 1 times [2022-12-13 18:03:22,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:03:22,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31614424] [2022-12-13 18:03:22,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:22,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:03:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:22,295 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 18:03:22,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:03:22,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31614424] [2022-12-13 18:03:22,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31614424] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:22,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:03:22,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:03:22,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372675369] [2022-12-13 18:03:22,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:22,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:03:22,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:03:22,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:03:22,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:03:22,297 INFO L87 Difference]: Start difference. First operand 3586 states and 5366 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:23,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:03:23,494 INFO L93 Difference]: Finished difference Result 16912 states and 25065 transitions. [2022-12-13 18:03:23,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 18:03:23,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-12-13 18:03:23,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:03:23,514 INFO L225 Difference]: With dead ends: 16912 [2022-12-13 18:03:23,514 INFO L226 Difference]: Without dead ends: 13551 [2022-12-13 18:03:23,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:03:23,518 INFO L413 NwaCegarLoop]: 1078 mSDtfsCounter, 2157 mSDsluCounter, 2983 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2157 SdHoareTripleChecker+Valid, 4061 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:03:23,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2157 Valid, 4061 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:03:23,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13551 states. [2022-12-13 18:03:23,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13551 to 4456. [2022-12-13 18:03:23,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4456 states, 4450 states have (on average 1.4883146067415731) internal successors, (6623), 4454 states have internal predecessors, (6623), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:23,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 6628 transitions. [2022-12-13 18:03:23,815 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 6628 transitions. Word has length 67 [2022-12-13 18:03:23,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:03:23,815 INFO L495 AbstractCegarLoop]: Abstraction has 4456 states and 6628 transitions. [2022-12-13 18:03:23,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:23,815 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 6628 transitions. [2022-12-13 18:03:23,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 18:03:23,817 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:23,817 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 18:03:23,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:03:23,817 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:03:23,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:23,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1482385041, now seen corresponding path program 1 times [2022-12-13 18:03:23,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:03:23,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311309486] [2022-12-13 18:03:23,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:23,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:03:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:23,891 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 18:03:23,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:03:23,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311309486] [2022-12-13 18:03:23,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311309486] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:23,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:03:23,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:03:23,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530510045] [2022-12-13 18:03:23,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:23,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:03:23,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:03:23,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:03:23,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:03:23,893 INFO L87 Difference]: Start difference. First operand 4456 states and 6628 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:26,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:03:26,088 INFO L93 Difference]: Finished difference Result 30607 states and 45155 transitions. [2022-12-13 18:03:26,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 18:03:26,088 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-12-13 18:03:26,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:03:26,136 INFO L225 Difference]: With dead ends: 30607 [2022-12-13 18:03:26,136 INFO L226 Difference]: Without dead ends: 26376 [2022-12-13 18:03:26,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2022-12-13 18:03:26,148 INFO L413 NwaCegarLoop]: 1893 mSDtfsCounter, 3849 mSDsluCounter, 6826 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3849 SdHoareTripleChecker+Valid, 8719 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:03:26,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3849 Valid, 8719 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 18:03:26,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26376 states. [2022-12-13 18:03:26,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26376 to 4766. [2022-12-13 18:03:26,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4766 states, 4760 states have (on average 1.4779411764705883) internal successors, (7035), 4764 states have internal predecessors, (7035), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:26,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4766 states to 4766 states and 7040 transitions. [2022-12-13 18:03:26,596 INFO L78 Accepts]: Start accepts. Automaton has 4766 states and 7040 transitions. Word has length 68 [2022-12-13 18:03:26,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:03:26,596 INFO L495 AbstractCegarLoop]: Abstraction has 4766 states and 7040 transitions. [2022-12-13 18:03:26,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:26,597 INFO L276 IsEmpty]: Start isEmpty. Operand 4766 states and 7040 transitions. [2022-12-13 18:03:26,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 18:03:26,598 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:26,598 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:03:26,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 18:03:26,598 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:03:26,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:26,599 INFO L85 PathProgramCache]: Analyzing trace with hash 810462579, now seen corresponding path program 1 times [2022-12-13 18:03:26,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:03:26,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295334147] [2022-12-13 18:03:26,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:26,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:03:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:03:26,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:03:26,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295334147] [2022-12-13 18:03:26,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295334147] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:26,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:03:26,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:03:26,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603954199] [2022-12-13 18:03:26,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:26,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:03:26,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:03:26,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:03:26,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:03:26,621 INFO L87 Difference]: Start difference. First operand 4766 states and 7040 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:27,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:03:27,065 INFO L93 Difference]: Finished difference Result 10055 states and 14832 transitions. [2022-12-13 18:03:27,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:03:27,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-12-13 18:03:27,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:03:27,072 INFO L225 Difference]: With dead ends: 10055 [2022-12-13 18:03:27,072 INFO L226 Difference]: Without dead ends: 5310 [2022-12-13 18:03:27,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:03:27,077 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 143 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:03:27,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 834 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:03:27,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5310 states. [2022-12-13 18:03:27,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5310 to 5236. [2022-12-13 18:03:27,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5236 states, 5230 states have (on average 1.4747609942638624) internal successors, (7713), 5234 states have internal predecessors, (7713), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:27,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5236 states to 5236 states and 7718 transitions. [2022-12-13 18:03:27,596 INFO L78 Accepts]: Start accepts. Automaton has 5236 states and 7718 transitions. Word has length 79 [2022-12-13 18:03:27,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:03:27,597 INFO L495 AbstractCegarLoop]: Abstraction has 5236 states and 7718 transitions. [2022-12-13 18:03:27,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:27,597 INFO L276 IsEmpty]: Start isEmpty. Operand 5236 states and 7718 transitions. [2022-12-13 18:03:27,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 18:03:27,598 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:27,598 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:03:27,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 18:03:27,598 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:03:27,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:27,599 INFO L85 PathProgramCache]: Analyzing trace with hash -22506739, now seen corresponding path program 1 times [2022-12-13 18:03:27,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:03:27,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594261647] [2022-12-13 18:03:27,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:27,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:03:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:27,632 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:03:27,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:03:27,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594261647] [2022-12-13 18:03:27,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594261647] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:27,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:03:27,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:03:27,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767145157] [2022-12-13 18:03:27,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:27,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:03:27,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:03:27,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:03:27,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:03:27,634 INFO L87 Difference]: Start difference. First operand 5236 states and 7718 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:28,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:03:28,603 INFO L93 Difference]: Finished difference Result 14006 states and 20488 transitions. [2022-12-13 18:03:28,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:03:28,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-12-13 18:03:28,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:03:28,614 INFO L225 Difference]: With dead ends: 14006 [2022-12-13 18:03:28,615 INFO L226 Difference]: Without dead ends: 8669 [2022-12-13 18:03:28,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:03:28,620 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 658 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:03:28,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 1288 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:03:28,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8669 states. [2022-12-13 18:03:29,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8669 to 7699. [2022-12-13 18:03:29,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7699 states, 7693 states have (on average 1.443000129988301) internal successors, (11101), 7697 states have internal predecessors, (11101), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:29,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7699 states to 7699 states and 11106 transitions. [2022-12-13 18:03:29,134 INFO L78 Accepts]: Start accepts. Automaton has 7699 states and 11106 transitions. Word has length 91 [2022-12-13 18:03:29,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:03:29,134 INFO L495 AbstractCegarLoop]: Abstraction has 7699 states and 11106 transitions. [2022-12-13 18:03:29,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:29,134 INFO L276 IsEmpty]: Start isEmpty. Operand 7699 states and 11106 transitions. [2022-12-13 18:03:29,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-13 18:03:29,136 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:29,136 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:03:29,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 18:03:29,136 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:03:29,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:29,137 INFO L85 PathProgramCache]: Analyzing trace with hash 713103324, now seen corresponding path program 1 times [2022-12-13 18:03:29,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:03:29,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400599663] [2022-12-13 18:03:29,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:29,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:03:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:29,173 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:03:29,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:03:29,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400599663] [2022-12-13 18:03:29,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400599663] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:29,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:03:29,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:03:29,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273498433] [2022-12-13 18:03:29,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:29,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:03:29,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:03:29,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:03:29,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:03:29,175 INFO L87 Difference]: Start difference. First operand 7699 states and 11106 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:29,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:03:29,509 INFO L93 Difference]: Finished difference Result 11093 states and 16026 transitions. [2022-12-13 18:03:29,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:03:29,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-12-13 18:03:29,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:03:29,513 INFO L225 Difference]: With dead ends: 11093 [2022-12-13 18:03:29,513 INFO L226 Difference]: Without dead ends: 3397 [2022-12-13 18:03:29,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:03:29,518 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 347 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:03:29,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 529 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:03:29,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2022-12-13 18:03:29,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 3344. [2022-12-13 18:03:29,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3344 states, 3338 states have (on average 1.3523067705212701) internal successors, (4514), 3342 states have internal predecessors, (4514), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:29,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 4519 transitions. [2022-12-13 18:03:29,737 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 4519 transitions. Word has length 99 [2022-12-13 18:03:29,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:03:29,737 INFO L495 AbstractCegarLoop]: Abstraction has 3344 states and 4519 transitions. [2022-12-13 18:03:29,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:29,738 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 4519 transitions. [2022-12-13 18:03:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 18:03:29,738 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:29,739 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:03:29,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 18:03:29,739 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:03:29,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:29,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1037594014, now seen corresponding path program 1 times [2022-12-13 18:03:29,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:03:29,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575400671] [2022-12-13 18:03:29,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:29,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:03:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:29,783 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:03:29,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:03:29,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575400671] [2022-12-13 18:03:29,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575400671] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:29,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:03:29,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:03:29,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357733663] [2022-12-13 18:03:29,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:29,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:03:29,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:03:29,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:03:29,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:03:29,785 INFO L87 Difference]: Start difference. First operand 3344 states and 4519 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:31,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:03:31,045 INFO L93 Difference]: Finished difference Result 12772 states and 17244 transitions. [2022-12-13 18:03:31,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:03:31,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-12-13 18:03:31,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:03:31,056 INFO L225 Difference]: With dead ends: 12772 [2022-12-13 18:03:31,056 INFO L226 Difference]: Without dead ends: 9605 [2022-12-13 18:03:31,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:03:31,061 INFO L413 NwaCegarLoop]: 1094 mSDtfsCounter, 1561 mSDsluCounter, 2344 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 3438 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:03:31,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1561 Valid, 3438 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:03:31,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9605 states. [2022-12-13 18:03:31,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9605 to 3346. [2022-12-13 18:03:31,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3346 states, 3340 states have (on average 1.3502994011976048) internal successors, (4510), 3344 states have internal predecessors, (4510), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:31,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3346 states to 3346 states and 4515 transitions. [2022-12-13 18:03:31,361 INFO L78 Accepts]: Start accepts. Automaton has 3346 states and 4515 transitions. Word has length 101 [2022-12-13 18:03:31,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:03:31,361 INFO L495 AbstractCegarLoop]: Abstraction has 3346 states and 4515 transitions. [2022-12-13 18:03:31,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:31,361 INFO L276 IsEmpty]: Start isEmpty. Operand 3346 states and 4515 transitions. [2022-12-13 18:03:31,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 18:03:31,362 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:31,362 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:03:31,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 18:03:31,363 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:03:31,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:31,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1285693593, now seen corresponding path program 1 times [2022-12-13 18:03:31,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:03:31,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991327238] [2022-12-13 18:03:31,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:31,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:03:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:03:31,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:03:31,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991327238] [2022-12-13 18:03:31,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991327238] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:03:31,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652473663] [2022-12-13 18:03:31,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:31,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:03:31,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:03:31,409 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:03:31,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:03:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:31,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 18:03:31,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:03:31,590 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:03:31,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:03:31,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652473663] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:31,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:03:31,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-13 18:03:31,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765071360] [2022-12-13 18:03:31,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:31,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:03:31,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:03:31,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:03:31,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:03:31,592 INFO L87 Difference]: Start difference. First operand 3346 states and 4515 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:31,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:03:31,964 INFO L93 Difference]: Finished difference Result 3993 states and 5384 transitions. [2022-12-13 18:03:31,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:03:31,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-12-13 18:03:31,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:03:31,969 INFO L225 Difference]: With dead ends: 3993 [2022-12-13 18:03:31,969 INFO L226 Difference]: Without dead ends: 3989 [2022-12-13 18:03:31,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:03:31,970 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 241 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:03:31,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 819 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:03:31,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3989 states. [2022-12-13 18:03:32,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3989 to 3939. [2022-12-13 18:03:32,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3939 states, 3933 states have (on average 1.3478260869565217) internal successors, (5301), 3937 states have internal predecessors, (5301), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:32,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 5306 transitions. [2022-12-13 18:03:32,282 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 5306 transitions. Word has length 103 [2022-12-13 18:03:32,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:03:32,282 INFO L495 AbstractCegarLoop]: Abstraction has 3939 states and 5306 transitions. [2022-12-13 18:03:32,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:32,282 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 5306 transitions. [2022-12-13 18:03:32,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-12-13 18:03:32,283 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:32,283 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:03:32,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:03:32,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 18:03:32,485 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:03:32,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:32,486 INFO L85 PathProgramCache]: Analyzing trace with hash -219637223, now seen corresponding path program 1 times [2022-12-13 18:03:32,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:03:32,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453664083] [2022-12-13 18:03:32,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:32,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:03:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:32,582 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:03:32,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:03:32,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453664083] [2022-12-13 18:03:32,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453664083] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:03:32,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613707703] [2022-12-13 18:03:32,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:32,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:03:32,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:03:32,584 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:03:32,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:03:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:32,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 18:03:32,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:03:32,753 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:03:32,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:03:32,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613707703] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:32,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:03:32,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-13 18:03:32,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076014980] [2022-12-13 18:03:32,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:32,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:03:32,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:03:32,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:03:32,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:03:32,755 INFO L87 Difference]: Start difference. First operand 3939 states and 5306 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:33,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:03:33,065 INFO L93 Difference]: Finished difference Result 7022 states and 9512 transitions. [2022-12-13 18:03:33,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:03:33,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-12-13 18:03:33,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:03:33,068 INFO L225 Difference]: With dead ends: 7022 [2022-12-13 18:03:33,069 INFO L226 Difference]: Without dead ends: 3088 [2022-12-13 18:03:33,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:03:33,072 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 272 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:03:33,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 430 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:03:33,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3088 states. [2022-12-13 18:03:33,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3088 to 2866. [2022-12-13 18:03:33,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2860 states have (on average 1.3297202797202796) internal successors, (3803), 2864 states have internal predecessors, (3803), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:33,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 3808 transitions. [2022-12-13 18:03:33,324 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 3808 transitions. Word has length 160 [2022-12-13 18:03:33,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:03:33,324 INFO L495 AbstractCegarLoop]: Abstraction has 2866 states and 3808 transitions. [2022-12-13 18:03:33,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:33,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 3808 transitions. [2022-12-13 18:03:33,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-12-13 18:03:33,326 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:33,326 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:03:33,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 18:03:33,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 18:03:33,528 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:03:33,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:33,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1280711905, now seen corresponding path program 1 times [2022-12-13 18:03:33,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:03:33,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125103673] [2022-12-13 18:03:33,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:33,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:03:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:33,618 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:03:33,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:03:33,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125103673] [2022-12-13 18:03:33,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125103673] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:03:33,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735406159] [2022-12-13 18:03:33,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:33,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:03:33,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:03:33,620 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:03:33,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 18:03:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:33,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 18:03:33,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:03:33,751 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 18:03:33,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:03:33,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735406159] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:33,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:03:33,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-13 18:03:33,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651515842] [2022-12-13 18:03:33,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:33,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:03:33,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:03:33,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:03:33,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:03:33,752 INFO L87 Difference]: Start difference. First operand 2866 states and 3808 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:34,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:03:34,082 INFO L93 Difference]: Finished difference Result 5560 states and 7429 transitions. [2022-12-13 18:03:34,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:03:34,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2022-12-13 18:03:34,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:03:34,085 INFO L225 Difference]: With dead ends: 5560 [2022-12-13 18:03:34,085 INFO L226 Difference]: Without dead ends: 2866 [2022-12-13 18:03:34,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:03:34,088 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 282 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:03:34,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 402 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:03:34,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2022-12-13 18:03:34,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2866. [2022-12-13 18:03:34,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2860 states have (on average 1.2961538461538462) internal successors, (3707), 2864 states have internal predecessors, (3707), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:34,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 3712 transitions. [2022-12-13 18:03:34,354 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 3712 transitions. Word has length 163 [2022-12-13 18:03:34,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:03:34,354 INFO L495 AbstractCegarLoop]: Abstraction has 2866 states and 3712 transitions. [2022-12-13 18:03:34,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:34,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 3712 transitions. [2022-12-13 18:03:34,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-12-13 18:03:34,356 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:34,356 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:03:34,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 18:03:34,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:03:34,557 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:03:34,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:34,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1156524976, now seen corresponding path program 1 times [2022-12-13 18:03:34,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:03:34,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218835186] [2022-12-13 18:03:34,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:34,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:03:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:34,673 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:03:34,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:03:34,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218835186] [2022-12-13 18:03:34,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218835186] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:03:34,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678474513] [2022-12-13 18:03:34,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:34,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:03:34,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:03:34,676 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:03:34,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 18:03:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:34,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 18:03:34,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:03:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 18:03:34,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:03:34,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678474513] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:34,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:03:34,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-13 18:03:34,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613657445] [2022-12-13 18:03:34,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:34,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:03:34,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:03:34,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:03:34,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:03:34,810 INFO L87 Difference]: Start difference. First operand 2866 states and 3712 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:35,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:03:35,483 INFO L93 Difference]: Finished difference Result 6487 states and 8570 transitions. [2022-12-13 18:03:35,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:03:35,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2022-12-13 18:03:35,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:03:35,487 INFO L225 Difference]: With dead ends: 6487 [2022-12-13 18:03:35,487 INFO L226 Difference]: Without dead ends: 3793 [2022-12-13 18:03:35,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:03:35,490 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 213 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:03:35,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 684 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:03:35,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3793 states. [2022-12-13 18:03:35,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3793 to 3705. [2022-12-13 18:03:35,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3705 states, 3699 states have (on average 1.2660178426601785) internal successors, (4683), 3703 states have internal predecessors, (4683), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:35,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3705 states to 3705 states and 4688 transitions. [2022-12-13 18:03:35,811 INFO L78 Accepts]: Start accepts. Automaton has 3705 states and 4688 transitions. Word has length 164 [2022-12-13 18:03:35,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:03:35,811 INFO L495 AbstractCegarLoop]: Abstraction has 3705 states and 4688 transitions. [2022-12-13 18:03:35,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:35,812 INFO L276 IsEmpty]: Start isEmpty. Operand 3705 states and 4688 transitions. [2022-12-13 18:03:35,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 18:03:35,812 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:35,812 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:03:35,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 18:03:36,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:03:36,014 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:03:36,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:36,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1102689509, now seen corresponding path program 1 times [2022-12-13 18:03:36,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:03:36,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713480306] [2022-12-13 18:03:36,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:36,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:03:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:36,187 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:03:36,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:03:36,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713480306] [2022-12-13 18:03:36,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713480306] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:03:36,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384986114] [2022-12-13 18:03:36,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:36,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:03:36,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:03:36,189 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:03:36,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 18:03:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:36,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 18:03:36,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:03:36,476 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:03:36,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:03:36,671 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:03:36,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384986114] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:03:36,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:03:36,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-12-13 18:03:36,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559474625] [2022-12-13 18:03:36,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:03:36,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 18:03:36,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:03:36,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 18:03:36,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:03:36,673 INFO L87 Difference]: Start difference. First operand 3705 states and 4688 transitions. Second operand has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:38,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:03:38,927 INFO L93 Difference]: Finished difference Result 18600 states and 23623 transitions. [2022-12-13 18:03:38,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-13 18:03:38,928 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2022-12-13 18:03:38,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:03:38,941 INFO L225 Difference]: With dead ends: 18600 [2022-12-13 18:03:38,941 INFO L226 Difference]: Without dead ends: 15067 [2022-12-13 18:03:38,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 341 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 18:03:38,947 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 4227 mSDsluCounter, 4852 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4227 SdHoareTripleChecker+Valid, 5741 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:03:38,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4227 Valid, 5741 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:03:38,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15067 states. [2022-12-13 18:03:39,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15067 to 5254. [2022-12-13 18:03:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5254 states, 5248 states have (on average 1.271341463414634) internal successors, (6672), 5252 states have internal predecessors, (6672), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:39,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 6677 transitions. [2022-12-13 18:03:39,552 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 6677 transitions. Word has length 166 [2022-12-13 18:03:39,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:03:39,552 INFO L495 AbstractCegarLoop]: Abstraction has 5254 states and 6677 transitions. [2022-12-13 18:03:39,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:39,552 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 6677 transitions. [2022-12-13 18:03:39,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-12-13 18:03:39,553 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:39,553 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:03:39,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 18:03:39,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:03:39,755 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:03:39,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:39,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1782230669, now seen corresponding path program 1 times [2022-12-13 18:03:39,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:03:39,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128376935] [2022-12-13 18:03:39,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:39,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:03:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:40,050 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 10 proven. 196 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 18:03:40,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:03:40,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128376935] [2022-12-13 18:03:40,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128376935] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:03:40,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871836835] [2022-12-13 18:03:40,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:40,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:03:40,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:03:40,051 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:03:40,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 18:03:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:40,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 18:03:40,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:03:40,574 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 10 proven. 196 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 18:03:40,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:03:40,949 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 10 proven. 196 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 18:03:40,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871836835] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:03:40,949 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:03:40,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 11 [2022-12-13 18:03:40,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315307685] [2022-12-13 18:03:40,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:03:40,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 18:03:40,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:03:40,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 18:03:40,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:03:40,952 INFO L87 Difference]: Start difference. First operand 5254 states and 6677 transitions. Second operand has 11 states, 11 states have (on average 23.636363636363637) internal successors, (260), 11 states have internal predecessors, (260), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:44,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:03:44,542 INFO L93 Difference]: Finished difference Result 24208 states and 30652 transitions. [2022-12-13 18:03:44,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-13 18:03:44,542 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 23.636363636363637) internal successors, (260), 11 states have internal predecessors, (260), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2022-12-13 18:03:44,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:03:44,559 INFO L225 Difference]: With dead ends: 24208 [2022-12-13 18:03:44,559 INFO L226 Difference]: Without dead ends: 19126 [2022-12-13 18:03:44,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 545 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=261, Invalid=1631, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 18:03:44,565 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 5925 mSDsluCounter, 10366 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5925 SdHoareTripleChecker+Valid, 11860 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:03:44,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5925 Valid, 11860 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:03:44,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19126 states. [2022-12-13 18:03:45,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19126 to 6677. [2022-12-13 18:03:45,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6677 states, 6671 states have (on average 1.272822665267576) internal successors, (8491), 6675 states have internal predecessors, (8491), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:45,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6677 states to 6677 states and 8496 transitions. [2022-12-13 18:03:45,436 INFO L78 Accepts]: Start accepts. Automaton has 6677 states and 8496 transitions. Word has length 266 [2022-12-13 18:03:45,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:03:45,437 INFO L495 AbstractCegarLoop]: Abstraction has 6677 states and 8496 transitions. [2022-12-13 18:03:45,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.636363636363637) internal successors, (260), 11 states have internal predecessors, (260), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:45,437 INFO L276 IsEmpty]: Start isEmpty. Operand 6677 states and 8496 transitions. [2022-12-13 18:03:45,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-12-13 18:03:45,439 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:45,439 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 18:03:45,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 18:03:45,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:03:45,641 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:03:45,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:45,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1036581045, now seen corresponding path program 1 times [2022-12-13 18:03:45,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:03:45,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843799536] [2022-12-13 18:03:45,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:45,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:03:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:46,049 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 15 proven. 457 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 18:03:46,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:03:46,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843799536] [2022-12-13 18:03:46,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843799536] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:03:46,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798367540] [2022-12-13 18:03:46,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:46,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:03:46,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:03:46,050 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:03:46,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 18:03:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:46,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 18:03:46,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:03:46,674 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 15 proven. 457 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 18:03:46,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:03:47,151 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 15 proven. 457 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 18:03:47,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798367540] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:03:47,151 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:03:47,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-12-13 18:03:47,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014677191] [2022-12-13 18:03:47,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:03:47,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 18:03:47,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:03:47,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 18:03:47,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:03:47,154 INFO L87 Difference]: Start difference. First operand 6677 states and 8496 transitions. Second operand has 13 states, 13 states have (on average 27.615384615384617) internal successors, (359), 13 states have internal predecessors, (359), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:51,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:03:51,991 INFO L93 Difference]: Finished difference Result 29894 states and 37793 transitions. [2022-12-13 18:03:51,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-13 18:03:51,992 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 27.615384615384617) internal successors, (359), 13 states have internal predecessors, (359), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 367 [2022-12-13 18:03:51,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:03:52,012 INFO L225 Difference]: With dead ends: 29894 [2022-12-13 18:03:52,012 INFO L226 Difference]: Without dead ends: 23389 [2022-12-13 18:03:52,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 751 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=315, Invalid=2655, Unknown=0, NotChecked=0, Total=2970 [2022-12-13 18:03:52,019 INFO L413 NwaCegarLoop]: 2133 mSDtfsCounter, 7878 mSDsluCounter, 18920 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7878 SdHoareTripleChecker+Valid, 21053 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:03:52,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7878 Valid, 21053 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1435 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 18:03:52,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23389 states. [2022-12-13 18:03:53,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23389 to 8102. [2022-12-13 18:03:53,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8102 states, 8096 states have (on average 1.273715415019763) internal successors, (10312), 8100 states have internal predecessors, (10312), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:53,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8102 states to 8102 states and 10317 transitions. [2022-12-13 18:03:53,239 INFO L78 Accepts]: Start accepts. Automaton has 8102 states and 10317 transitions. Word has length 367 [2022-12-13 18:03:53,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:03:53,239 INFO L495 AbstractCegarLoop]: Abstraction has 8102 states and 10317 transitions. [2022-12-13 18:03:53,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 27.615384615384617) internal successors, (359), 13 states have internal predecessors, (359), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:03:53,240 INFO L276 IsEmpty]: Start isEmpty. Operand 8102 states and 10317 transitions. [2022-12-13 18:03:53,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2022-12-13 18:03:53,242 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:03:53,242 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-12-13 18:03:53,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 18:03:53,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-13 18:03:53,443 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:03:53,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:53,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1736090188, now seen corresponding path program 1 times [2022-12-13 18:03:53,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:03:53,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271853271] [2022-12-13 18:03:53,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:53,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:03:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:53,955 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 20 proven. 828 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 18:03:53,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:03:53,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271853271] [2022-12-13 18:03:53,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271853271] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:03:53,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512521864] [2022-12-13 18:03:53,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:53,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:03:53,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:03:53,956 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:03:53,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 18:03:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:54,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-13 18:03:54,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:03:54,793 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 20 proven. 828 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 18:03:54,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:03:55,617 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 20 proven. 828 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 18:03:55,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512521864] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:03:55,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:03:55,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 15 [2022-12-13 18:03:55,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934527786] [2022-12-13 18:03:55,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:03:55,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 18:03:55,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:03:55,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 18:03:55,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-12-13 18:03:55,621 INFO L87 Difference]: Start difference. First operand 8102 states and 10317 transitions. Second operand has 15 states, 15 states have (on average 30.6) internal successors, (459), 15 states have internal predecessors, (459), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:02,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:02,872 INFO L93 Difference]: Finished difference Result 35584 states and 44938 transitions. [2022-12-13 18:04:02,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-13 18:04:02,872 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 30.6) internal successors, (459), 15 states have internal predecessors, (459), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 469 [2022-12-13 18:04:02,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:02,899 INFO L225 Difference]: With dead ends: 35584 [2022-12-13 18:04:02,899 INFO L226 Difference]: Without dead ends: 27654 [2022-12-13 18:04:02,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1029 GetRequests, 959 SyntacticMatches, 6 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1240 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=369, Invalid=3921, Unknown=0, NotChecked=0, Total=4290 [2022-12-13 18:04:02,908 INFO L413 NwaCegarLoop]: 2772 mSDtfsCounter, 9831 mSDsluCounter, 30028 mSDsCounter, 0 mSdLazyCounter, 2230 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9831 SdHoareTripleChecker+Valid, 32800 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:02,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9831 Valid, 32800 Invalid, 2406 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [176 Valid, 2230 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 18:04:02,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27654 states. [2022-12-13 18:04:04,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27654 to 9529. [2022-12-13 18:04:04,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9529 states, 9523 states have (on average 1.274283314081697) internal successors, (12135), 9527 states have internal predecessors, (12135), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:04,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9529 states to 9529 states and 12140 transitions. [2022-12-13 18:04:04,588 INFO L78 Accepts]: Start accepts. Automaton has 9529 states and 12140 transitions. Word has length 469 [2022-12-13 18:04:04,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:04,588 INFO L495 AbstractCegarLoop]: Abstraction has 9529 states and 12140 transitions. [2022-12-13 18:04:04,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 30.6) internal successors, (459), 15 states have internal predecessors, (459), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:04,588 INFO L276 IsEmpty]: Start isEmpty. Operand 9529 states and 12140 transitions. [2022-12-13 18:04:04,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2022-12-13 18:04:04,591 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:04,592 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 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] [2022-12-13 18:04:04,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 18:04:04,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:04:04,793 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:04,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:04,795 INFO L85 PathProgramCache]: Analyzing trace with hash 408367013, now seen corresponding path program 1 times [2022-12-13 18:04:04,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:04,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283864764] [2022-12-13 18:04:04,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:04,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:05,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1356 backedges. 929 proven. 406 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 18:04:05,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:05,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283864764] [2022-12-13 18:04:05,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283864764] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:04:05,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021465456] [2022-12-13 18:04:05,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:05,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:04:05,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:04:05,277 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:04:05,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 18:04:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:05,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 1605 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 18:04:05,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:04:05,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1356 backedges. 1335 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 18:04:05,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:04:05,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021465456] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:05,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:04:05,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2022-12-13 18:04:05,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817849540] [2022-12-13 18:04:05,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:05,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 18:04:05,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:05,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 18:04:05,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-12-13 18:04:05,771 INFO L87 Difference]: Start difference. First operand 9529 states and 12140 transitions. Second operand has 13 states, 13 states have (on average 43.07692307692308) internal successors, (560), 13 states have internal predecessors, (560), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:08,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:08,852 INFO L93 Difference]: Finished difference Result 22293 states and 28260 transitions. [2022-12-13 18:04:08,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 18:04:08,853 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 43.07692307692308) internal successors, (560), 13 states have internal predecessors, (560), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 572 [2022-12-13 18:04:08,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:08,864 INFO L225 Difference]: With dead ends: 22293 [2022-12-13 18:04:08,864 INFO L226 Difference]: Without dead ends: 12933 [2022-12-13 18:04:08,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=297, Invalid=695, Unknown=0, NotChecked=0, Total=992 [2022-12-13 18:04:08,870 INFO L413 NwaCegarLoop]: 2052 mSDtfsCounter, 3461 mSDsluCounter, 7186 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3461 SdHoareTripleChecker+Valid, 9238 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:08,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3461 Valid, 9238 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 18:04:08,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12933 states. [2022-12-13 18:04:10,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12933 to 9398. [2022-12-13 18:04:10,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9398 states, 9392 states have (on average 1.273317717206133) internal successors, (11959), 9396 states have internal predecessors, (11959), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:10,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9398 states to 9398 states and 11964 transitions. [2022-12-13 18:04:10,455 INFO L78 Accepts]: Start accepts. Automaton has 9398 states and 11964 transitions. Word has length 572 [2022-12-13 18:04:10,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:10,456 INFO L495 AbstractCegarLoop]: Abstraction has 9398 states and 11964 transitions. [2022-12-13 18:04:10,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 43.07692307692308) internal successors, (560), 13 states have internal predecessors, (560), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:10,456 INFO L276 IsEmpty]: Start isEmpty. Operand 9398 states and 11964 transitions. [2022-12-13 18:04:10,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2022-12-13 18:04:10,461 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:10,461 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:04:10,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 18:04:10,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 18:04:10,663 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:10,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:10,665 INFO L85 PathProgramCache]: Analyzing trace with hash 29310338, now seen corresponding path program 1 times [2022-12-13 18:04:10,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:10,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846185082] [2022-12-13 18:04:10,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:10,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:10,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 1112 trivial. 0 not checked. [2022-12-13 18:04:10,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:10,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846185082] [2022-12-13 18:04:10,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846185082] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:10,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:10,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:04:10,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422191953] [2022-12-13 18:04:10,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:10,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:04:10,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:10,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:04:10,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:04:10,794 INFO L87 Difference]: Start difference. First operand 9398 states and 11964 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:11,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:11,460 INFO L93 Difference]: Finished difference Result 11457 states and 14333 transitions. [2022-12-13 18:04:11,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:04:11,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 573 [2022-12-13 18:04:11,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:11,463 INFO L225 Difference]: With dead ends: 11457 [2022-12-13 18:04:11,463 INFO L226 Difference]: Without dead ends: 2112 [2022-12-13 18:04:11,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:04:11,469 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 142 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:11,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 412 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:04:11,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2022-12-13 18:04:11,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 2109. [2022-12-13 18:04:11,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2109 states, 2105 states have (on average 1.1087885985748218) internal successors, (2334), 2107 states have internal predecessors, (2334), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:11,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2109 states to 2109 states and 2337 transitions. [2022-12-13 18:04:11,871 INFO L78 Accepts]: Start accepts. Automaton has 2109 states and 2337 transitions. Word has length 573 [2022-12-13 18:04:11,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:11,872 INFO L495 AbstractCegarLoop]: Abstraction has 2109 states and 2337 transitions. [2022-12-13 18:04:11,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:11,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2109 states and 2337 transitions. [2022-12-13 18:04:11,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2022-12-13 18:04:11,874 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:11,875 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-12-13 18:04:11,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 18:04:11,875 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:11,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:11,875 INFO L85 PathProgramCache]: Analyzing trace with hash 61583050, now seen corresponding path program 1 times [2022-12-13 18:04:11,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:11,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763602977] [2022-12-13 18:04:11,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:11,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:12,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 1112 trivial. 0 not checked. [2022-12-13 18:04:12,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:12,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763602977] [2022-12-13 18:04:12,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763602977] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:12,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:12,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:04:12,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352832935] [2022-12-13 18:04:12,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:12,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:04:12,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:12,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:04:12,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:04:12,067 INFO L87 Difference]: Start difference. First operand 2109 states and 2337 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:12,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:12,808 INFO L93 Difference]: Finished difference Result 4316 states and 4827 transitions. [2022-12-13 18:04:12,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 18:04:12,809 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 574 [2022-12-13 18:04:12,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:12,812 INFO L225 Difference]: With dead ends: 4316 [2022-12-13 18:04:12,812 INFO L226 Difference]: Without dead ends: 3379 [2022-12-13 18:04:12,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-12-13 18:04:12,814 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 934 mSDsluCounter, 2043 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 2554 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:12,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 2554 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:04:12,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3379 states. [2022-12-13 18:04:13,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3379 to 2101. [2022-12-13 18:04:13,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2101 states, 2097 states have (on average 1.1044349070100143) internal successors, (2316), 2099 states have internal predecessors, (2316), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:13,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 2319 transitions. [2022-12-13 18:04:13,210 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 2319 transitions. Word has length 574 [2022-12-13 18:04:13,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:13,211 INFO L495 AbstractCegarLoop]: Abstraction has 2101 states and 2319 transitions. [2022-12-13 18:04:13,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:13,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 2319 transitions. [2022-12-13 18:04:13,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2022-12-13 18:04:13,214 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:13,214 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:04:13,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 18:04:13,214 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:13,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:13,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1902632470, now seen corresponding path program 1 times [2022-12-13 18:04:13,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:13,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910013072] [2022-12-13 18:04:13,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:13,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:13,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 1112 trivial. 0 not checked. [2022-12-13 18:04:13,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:13,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910013072] [2022-12-13 18:04:13,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910013072] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:13,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:13,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:04:13,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472238794] [2022-12-13 18:04:13,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:13,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:04:13,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:13,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:04:13,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:04:13,355 INFO L87 Difference]: Start difference. First operand 2101 states and 2319 transitions. Second operand has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:13,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:13,922 INFO L93 Difference]: Finished difference Result 3602 states and 4006 transitions. [2022-12-13 18:04:13,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:04:13,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 575 [2022-12-13 18:04:13,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:13,926 INFO L225 Difference]: With dead ends: 3602 [2022-12-13 18:04:13,926 INFO L226 Difference]: Without dead ends: 2663 [2022-12-13 18:04:13,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:04:13,927 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 459 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:13,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 949 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:04:13,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2022-12-13 18:04:14,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2030. [2022-12-13 18:04:14,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2030 states, 2027 states have (on average 1.0735076467686235) internal successors, (2176), 2028 states have internal predecessors, (2176), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:14,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 2178 transitions. [2022-12-13 18:04:14,587 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 2178 transitions. Word has length 575 [2022-12-13 18:04:14,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:14,587 INFO L495 AbstractCegarLoop]: Abstraction has 2030 states and 2178 transitions. [2022-12-13 18:04:14,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:14,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 2178 transitions. [2022-12-13 18:04:14,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2022-12-13 18:04:14,592 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:14,592 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:04:14,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 18:04:14,592 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:14,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:14,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1877942903, now seen corresponding path program 1 times [2022-12-13 18:04:14,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:14,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294631813] [2022-12-13 18:04:14,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:14,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:16,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 122 proven. 403 refuted. 0 times theorem prover too weak. 832 trivial. 0 not checked. [2022-12-13 18:04:16,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:16,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294631813] [2022-12-13 18:04:16,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294631813] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:04:16,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201007715] [2022-12-13 18:04:16,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:16,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:04:16,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:04:16,415 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:04:16,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 18:04:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:16,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-13 18:04:16,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:04:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 124 proven. 333 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2022-12-13 18:04:17,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:04:18,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 30 proven. 427 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2022-12-13 18:04:18,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201007715] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:04:18,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:04:18,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 30 [2022-12-13 18:04:18,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957212471] [2022-12-13 18:04:18,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:04:18,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-13 18:04:18,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:18,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-13 18:04:18,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2022-12-13 18:04:18,045 INFO L87 Difference]: Start difference. First operand 2030 states and 2178 transitions. Second operand has 30 states, 30 states have (on average 13.966666666666667) internal successors, (419), 30 states have internal predecessors, (419), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:19,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:19,182 INFO L93 Difference]: Finished difference Result 2352 states and 2524 transitions. [2022-12-13 18:04:19,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 18:04:19,183 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 13.966666666666667) internal successors, (419), 30 states have internal predecessors, (419), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 631 [2022-12-13 18:04:19,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:19,185 INFO L225 Difference]: With dead ends: 2352 [2022-12-13 18:04:19,185 INFO L226 Difference]: Without dead ends: 2349 [2022-12-13 18:04:19,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1311 GetRequests, 1255 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=388, Invalid=2368, Unknown=0, NotChecked=0, Total=2756 [2022-12-13 18:04:19,188 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 2954 mSDsluCounter, 6461 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2954 SdHoareTripleChecker+Valid, 6862 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:19,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2954 Valid, 6862 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:04:19,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2022-12-13 18:04:19,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 2030. [2022-12-13 18:04:19,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2030 states, 2027 states have (on average 1.0730143068574247) internal successors, (2175), 2028 states have internal predecessors, (2175), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:19,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 2177 transitions. [2022-12-13 18:04:19,627 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 2177 transitions. Word has length 631 [2022-12-13 18:04:19,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:19,627 INFO L495 AbstractCegarLoop]: Abstraction has 2030 states and 2177 transitions. [2022-12-13 18:04:19,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 13.966666666666667) internal successors, (419), 30 states have internal predecessors, (419), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:19,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 2177 transitions. [2022-12-13 18:04:19,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2022-12-13 18:04:19,631 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:19,631 INFO L195 NwaCegarLoop]: trace histogram [13, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:04:19,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 18:04:19,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:04:19,833 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:19,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:19,835 INFO L85 PathProgramCache]: Analyzing trace with hash -659046380, now seen corresponding path program 1 times [2022-12-13 18:04:19,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:19,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016269426] [2022-12-13 18:04:19,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:19,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:20,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1516 backedges. 352 proven. 48 refuted. 0 times theorem prover too weak. 1116 trivial. 0 not checked. [2022-12-13 18:04:20,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:20,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016269426] [2022-12-13 18:04:20,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016269426] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:04:20,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100294901] [2022-12-13 18:04:20,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:20,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:04:20,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:04:20,363 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:04:20,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 18:04:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:20,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 18:04:20,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:04:20,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1516 backedges. 352 proven. 48 refuted. 0 times theorem prover too weak. 1116 trivial. 0 not checked. [2022-12-13 18:04:20,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:04:20,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1516 backedges. 352 proven. 48 refuted. 0 times theorem prover too weak. 1116 trivial. 0 not checked. [2022-12-13 18:04:20,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100294901] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:04:20,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:04:20,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-12-13 18:04:20,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116876183] [2022-12-13 18:04:20,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:04:20,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 18:04:20,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:20,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 18:04:20,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:04:20,897 INFO L87 Difference]: Start difference. First operand 2030 states and 2177 transitions. Second operand has 9 states, 9 states have (on average 31.555555555555557) internal successors, (284), 9 states have internal predecessors, (284), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:21,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:21,708 INFO L93 Difference]: Finished difference Result 3425 states and 3680 transitions. [2022-12-13 18:04:21,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 18:04:21,709 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 31.555555555555557) internal successors, (284), 9 states have internal predecessors, (284), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 681 [2022-12-13 18:04:21,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:21,711 INFO L225 Difference]: With dead ends: 3425 [2022-12-13 18:04:21,711 INFO L226 Difference]: Without dead ends: 2739 [2022-12-13 18:04:21,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1388 GetRequests, 1367 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-12-13 18:04:21,713 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 1156 mSDsluCounter, 2931 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 3453 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:21,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 3453 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:04:21,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2022-12-13 18:04:22,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2024. [2022-12-13 18:04:22,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2024 states, 2021 states have (on average 1.0682830282038596) internal successors, (2159), 2022 states have internal predecessors, (2159), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:22,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 2161 transitions. [2022-12-13 18:04:22,161 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 2161 transitions. Word has length 681 [2022-12-13 18:04:22,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:22,161 INFO L495 AbstractCegarLoop]: Abstraction has 2024 states and 2161 transitions. [2022-12-13 18:04:22,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 31.555555555555557) internal successors, (284), 9 states have internal predecessors, (284), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:22,161 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 2161 transitions. [2022-12-13 18:04:22,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 740 [2022-12-13 18:04:22,165 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:22,165 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:04:22,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 18:04:22,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 18:04:22,367 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:22,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:22,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1976417087, now seen corresponding path program 1 times [2022-12-13 18:04:22,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:22,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911064972] [2022-12-13 18:04:22,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:22,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:23,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1715 backedges. 232 proven. 1011 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2022-12-13 18:04:23,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:23,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911064972] [2022-12-13 18:04:23,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911064972] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:04:23,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840285266] [2022-12-13 18:04:23,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:23,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:04:23,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:04:23,751 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:04:23,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 18:04:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:24,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 2010 conjuncts, 45 conjunts are in the unsatisfiable core [2022-12-13 18:04:24,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:04:24,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1715 backedges. 319 proven. 870 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2022-12-13 18:04:24,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:04:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1715 backedges. 35 proven. 1154 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2022-12-13 18:04:25,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840285266] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:04:25,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:04:25,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 34 [2022-12-13 18:04:25,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575661037] [2022-12-13 18:04:25,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:04:25,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-13 18:04:25,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:25,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-13 18:04:25,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1034, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 18:04:25,523 INFO L87 Difference]: Start difference. First operand 2024 states and 2161 transitions. Second operand has 34 states, 34 states have (on average 20.852941176470587) internal successors, (709), 34 states have internal predecessors, (709), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:26,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:26,809 INFO L93 Difference]: Finished difference Result 2277 states and 2431 transitions. [2022-12-13 18:04:26,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-13 18:04:26,810 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 20.852941176470587) internal successors, (709), 34 states have internal predecessors, (709), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 739 [2022-12-13 18:04:26,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:26,811 INFO L225 Difference]: With dead ends: 2277 [2022-12-13 18:04:26,812 INFO L226 Difference]: Without dead ends: 2274 [2022-12-13 18:04:26,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1541 GetRequests, 1475 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=447, Invalid=3585, Unknown=0, NotChecked=0, Total=4032 [2022-12-13 18:04:26,813 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 3097 mSDsluCounter, 12368 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3097 SdHoareTripleChecker+Valid, 13008 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:26,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3097 Valid, 13008 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 18:04:26,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2022-12-13 18:04:27,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 2024. [2022-12-13 18:04:27,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2024 states, 2021 states have (on average 1.0677882236516576) internal successors, (2158), 2022 states have internal predecessors, (2158), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:27,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 2160 transitions. [2022-12-13 18:04:27,286 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 2160 transitions. Word has length 739 [2022-12-13 18:04:27,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:27,287 INFO L495 AbstractCegarLoop]: Abstraction has 2024 states and 2160 transitions. [2022-12-13 18:04:27,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 20.852941176470587) internal successors, (709), 34 states have internal predecessors, (709), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:27,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 2160 transitions. [2022-12-13 18:04:27,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2022-12-13 18:04:27,294 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:27,294 INFO L195 NwaCegarLoop]: trace histogram [15, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:04:27,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 18:04:27,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:04:27,496 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:27,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:27,497 INFO L85 PathProgramCache]: Analyzing trace with hash -915433764, now seen corresponding path program 1 times [2022-12-13 18:04:27,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:27,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396675399] [2022-12-13 18:04:27,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:27,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:28,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1925 backedges. 593 proven. 212 refuted. 0 times theorem prover too weak. 1120 trivial. 0 not checked. [2022-12-13 18:04:28,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:28,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396675399] [2022-12-13 18:04:28,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396675399] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:04:28,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300109202] [2022-12-13 18:04:28,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:28,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:04:28,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:04:28,242 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:04:28,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 18:04:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:28,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 2139 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 18:04:28,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:04:28,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1925 backedges. 593 proven. 212 refuted. 0 times theorem prover too weak. 1120 trivial. 0 not checked. [2022-12-13 18:04:28,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:04:29,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1925 backedges. 593 proven. 212 refuted. 0 times theorem prover too weak. 1120 trivial. 0 not checked. [2022-12-13 18:04:29,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300109202] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:04:29,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:04:29,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 11 [2022-12-13 18:04:29,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746977552] [2022-12-13 18:04:29,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:04:29,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 18:04:29,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:29,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 18:04:29,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:04:29,051 INFO L87 Difference]: Start difference. First operand 2024 states and 2160 transitions. Second operand has 11 states, 11 states have (on average 35.45454545454545) internal successors, (390), 11 states have internal predecessors, (390), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:30,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:30,018 INFO L93 Difference]: Finished difference Result 3055 states and 3271 transitions. [2022-12-13 18:04:30,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 18:04:30,018 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 35.45454545454545) internal successors, (390), 11 states have internal predecessors, (390), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 789 [2022-12-13 18:04:30,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:30,020 INFO L225 Difference]: With dead ends: 3055 [2022-12-13 18:04:30,021 INFO L226 Difference]: Without dead ends: 2563 [2022-12-13 18:04:30,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1611 GetRequests, 1584 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-12-13 18:04:30,021 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 1439 mSDsluCounter, 5155 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 5861 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:30,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 5861 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:04:30,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2563 states. [2022-12-13 18:04:30,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2563 to 2020. [2022-12-13 18:04:30,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 2017 states have (on average 1.0629647992067426) internal successors, (2144), 2018 states have internal predecessors, (2144), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:30,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 2146 transitions. [2022-12-13 18:04:30,488 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 2146 transitions. Word has length 789 [2022-12-13 18:04:30,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:30,489 INFO L495 AbstractCegarLoop]: Abstraction has 2020 states and 2146 transitions. [2022-12-13 18:04:30,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 35.45454545454545) internal successors, (390), 11 states have internal predecessors, (390), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:30,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 2146 transitions. [2022-12-13 18:04:30,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2022-12-13 18:04:30,494 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:30,494 INFO L195 NwaCegarLoop]: trace histogram [16, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:04:30,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 18:04:30,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-12-13 18:04:30,696 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:30,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:30,697 INFO L85 PathProgramCache]: Analyzing trace with hash -564749760, now seen corresponding path program 1 times [2022-12-13 18:04:30,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:30,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837521456] [2022-12-13 18:04:30,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:30,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:32,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2189 backedges. 189 proven. 1783 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-12-13 18:04:32,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:32,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837521456] [2022-12-13 18:04:32,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837521456] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:04:32,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733367825] [2022-12-13 18:04:32,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:32,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:04:32,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:04:32,500 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:04:32,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 18:04:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:32,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 2280 conjuncts, 57 conjunts are in the unsatisfiable core [2022-12-13 18:04:32,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:04:34,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2189 backedges. 422 proven. 1514 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-12-13 18:04:34,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:04:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2189 backedges. 40 proven. 1896 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-12-13 18:04:34,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733367825] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:04:34,909 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:04:34,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 40 [2022-12-13 18:04:34,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8839718] [2022-12-13 18:04:34,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:04:34,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-12-13 18:04:34,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:34,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-12-13 18:04:34,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1454, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 18:04:34,912 INFO L87 Difference]: Start difference. First operand 2020 states and 2146 transitions. Second operand has 40 states, 40 states have (on average 25.55) internal successors, (1022), 40 states have internal predecessors, (1022), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:36,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:36,613 INFO L93 Difference]: Finished difference Result 2283 states and 2426 transitions. [2022-12-13 18:04:36,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-13 18:04:36,613 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 25.55) internal successors, (1022), 40 states have internal predecessors, (1022), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 848 [2022-12-13 18:04:36,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:36,616 INFO L225 Difference]: With dead ends: 2283 [2022-12-13 18:04:36,616 INFO L226 Difference]: Without dead ends: 2280 [2022-12-13 18:04:36,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1773 GetRequests, 1695 SyntacticMatches, 4 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1287 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=519, Invalid=5181, Unknown=0, NotChecked=0, Total=5700 [2022-12-13 18:04:36,618 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 3684 mSDsluCounter, 19508 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3684 SdHoareTripleChecker+Valid, 20392 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:36,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3684 Valid, 20392 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 18:04:36,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2022-12-13 18:04:37,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 2020. [2022-12-13 18:04:37,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 2017 states have (on average 1.0624690133862171) internal successors, (2143), 2018 states have internal predecessors, (2143), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:37,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 2145 transitions. [2022-12-13 18:04:37,196 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 2145 transitions. Word has length 848 [2022-12-13 18:04:37,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:37,196 INFO L495 AbstractCegarLoop]: Abstraction has 2020 states and 2145 transitions. [2022-12-13 18:04:37,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 25.55) internal successors, (1022), 40 states have internal predecessors, (1022), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:37,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 2145 transitions. [2022-12-13 18:04:37,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2022-12-13 18:04:37,201 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:37,202 INFO L195 NwaCegarLoop]: trace histogram [17, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 18:04:37,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 18:04:37,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:04:37,404 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:37,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:37,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1919800221, now seen corresponding path program 1 times [2022-12-13 18:04:37,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:37,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867378478] [2022-12-13 18:04:37,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:37,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:38,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2451 backedges. 834 proven. 493 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2022-12-13 18:04:38,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:38,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867378478] [2022-12-13 18:04:38,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867378478] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:04:38,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39681027] [2022-12-13 18:04:38,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:38,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:04:38,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:04:38,518 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:04:38,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 18:04:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:38,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 2409 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 18:04:38,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:04:39,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2451 backedges. 834 proven. 493 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2022-12-13 18:04:39,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:04:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2451 backedges. 834 proven. 493 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2022-12-13 18:04:39,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39681027] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:04:39,822 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:04:39,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-12-13 18:04:39,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432382097] [2022-12-13 18:04:39,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:04:39,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 18:04:39,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:39,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 18:04:39,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:04:39,824 INFO L87 Difference]: Start difference. First operand 2020 states and 2145 transitions. Second operand has 13 states, 13 states have (on average 38.23076923076923) internal successors, (497), 13 states have internal predecessors, (497), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:40,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:40,855 INFO L93 Difference]: Finished difference Result 2687 states and 2864 transitions. [2022-12-13 18:04:40,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 18:04:40,856 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 38.23076923076923) internal successors, (497), 13 states have internal predecessors, (497), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 898 [2022-12-13 18:04:40,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:40,858 INFO L225 Difference]: With dead ends: 2687 [2022-12-13 18:04:40,858 INFO L226 Difference]: Without dead ends: 2389 [2022-12-13 18:04:40,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1836 GetRequests, 1805 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2022-12-13 18:04:40,858 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 1696 mSDsluCounter, 8170 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 9062 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:40,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1696 Valid, 9062 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:04:40,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2022-12-13 18:04:41,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2018. [2022-12-13 18:04:41,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 2015 states have (on average 1.0575682382133995) internal successors, (2131), 2016 states have internal predecessors, (2131), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:41,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 2133 transitions. [2022-12-13 18:04:41,340 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 2133 transitions. Word has length 898 [2022-12-13 18:04:41,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:41,340 INFO L495 AbstractCegarLoop]: Abstraction has 2018 states and 2133 transitions. [2022-12-13 18:04:41,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 38.23076923076923) internal successors, (497), 13 states have internal predecessors, (497), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:41,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 2133 transitions. [2022-12-13 18:04:41,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2022-12-13 18:04:41,346 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:41,346 INFO L195 NwaCegarLoop]: trace histogram [18, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 18:04:41,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 18:04:41,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-12-13 18:04:41,548 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:41,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:41,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1153982525, now seen corresponding path program 1 times [2022-12-13 18:04:41,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:41,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231416046] [2022-12-13 18:04:41,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:41,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:44,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2780 backedges. 146 proven. 2564 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-13 18:04:44,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:44,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231416046] [2022-12-13 18:04:44,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231416046] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:04:44,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636942636] [2022-12-13 18:04:44,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:44,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:04:44,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:04:44,081 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:04:44,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 18:04:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:44,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 2551 conjuncts, 69 conjunts are in the unsatisfiable core [2022-12-13 18:04:44,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:04:46,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2780 backedges. 429 proven. 2263 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-12-13 18:04:46,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:04:47,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2780 backedges. 45 proven. 2647 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-12-13 18:04:47,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636942636] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:04:47,214 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:04:47,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 46 [2022-12-13 18:04:47,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290068849] [2022-12-13 18:04:47,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:04:47,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-13 18:04:47,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:47,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-13 18:04:47,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1946, Unknown=0, NotChecked=0, Total=2070 [2022-12-13 18:04:47,221 INFO L87 Difference]: Start difference. First operand 2018 states and 2133 transitions. Second operand has 46 states, 46 states have (on average 29.08695652173913) internal successors, (1338), 46 states have internal predecessors, (1338), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:49,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:49,472 INFO L93 Difference]: Finished difference Result 2291 states and 2423 transitions. [2022-12-13 18:04:49,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-12-13 18:04:49,472 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 29.08695652173913) internal successors, (1338), 46 states have internal predecessors, (1338), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 958 [2022-12-13 18:04:49,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:49,475 INFO L225 Difference]: With dead ends: 2291 [2022-12-13 18:04:49,475 INFO L226 Difference]: Without dead ends: 2288 [2022-12-13 18:04:49,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2006 GetRequests, 1917 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1671 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=580, Invalid=6902, Unknown=0, NotChecked=0, Total=7482 [2022-12-13 18:04:49,476 INFO L413 NwaCegarLoop]: 1130 mSDtfsCounter, 3897 mSDsluCounter, 32474 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3897 SdHoareTripleChecker+Valid, 33604 SdHoareTripleChecker+Invalid, 2298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:49,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3897 Valid, 33604 Invalid, 2298 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 18:04:49,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2288 states. [2022-12-13 18:04:50,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2288 to 2018. [2022-12-13 18:04:50,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 2015 states have (on average 1.0570719602977667) internal successors, (2130), 2016 states have internal predecessors, (2130), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:50,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 2132 transitions. [2022-12-13 18:04:50,017 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 2132 transitions. Word has length 958 [2022-12-13 18:04:50,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:50,018 INFO L495 AbstractCegarLoop]: Abstraction has 2018 states and 2132 transitions. [2022-12-13 18:04:50,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 29.08695652173913) internal successors, (1338), 46 states have internal predecessors, (1338), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:50,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 2132 transitions. [2022-12-13 18:04:50,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2022-12-13 18:04:50,024 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:50,025 INFO L195 NwaCegarLoop]: trace histogram [19, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-12-13 18:04:50,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-12-13 18:04:50,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:04:50,227 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:50,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:50,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1126968736, now seen corresponding path program 1 times [2022-12-13 18:04:50,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:50,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905622901] [2022-12-13 18:04:50,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:50,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:51,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3095 backedges. 1075 proven. 892 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2022-12-13 18:04:51,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:51,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905622901] [2022-12-13 18:04:51,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905622901] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:04:51,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856309495] [2022-12-13 18:04:51,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:51,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:04:51,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:04:51,617 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:04:51,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 18:04:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:51,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 2680 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-13 18:04:51,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:04:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3095 backedges. 1075 proven. 892 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2022-12-13 18:04:52,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:04:53,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3095 backedges. 1075 proven. 892 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2022-12-13 18:04:53,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856309495] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:04:53,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:04:53,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 15 [2022-12-13 18:04:53,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677209097] [2022-12-13 18:04:53,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:04:53,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 18:04:53,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:53,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 18:04:53,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-12-13 18:04:53,544 INFO L87 Difference]: Start difference. First operand 2018 states and 2132 transitions. Second operand has 15 states, 15 states have (on average 40.333333333333336) internal successors, (605), 15 states have internal predecessors, (605), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:54,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:04:54,826 INFO L93 Difference]: Finished difference Result 2398 states and 2543 transitions. [2022-12-13 18:04:54,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 18:04:54,826 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 40.333333333333336) internal successors, (605), 15 states have internal predecessors, (605), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1008 [2022-12-13 18:04:54,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:04:54,828 INFO L225 Difference]: With dead ends: 2398 [2022-12-13 18:04:54,828 INFO L226 Difference]: Without dead ends: 2294 [2022-12-13 18:04:54,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2061 GetRequests, 2027 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2022-12-13 18:04:54,829 INFO L413 NwaCegarLoop]: 1031 mSDtfsCounter, 1791 mSDsluCounter, 11292 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1791 SdHoareTripleChecker+Valid, 12323 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:04:54,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1791 Valid, 12323 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:04:54,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2022-12-13 18:04:55,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 2017. [2022-12-13 18:04:55,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2017 states, 2015 states have (on average 1.0521091811414391) internal successors, (2120), 2015 states have internal predecessors, (2120), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:55,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 2121 transitions. [2022-12-13 18:04:55,329 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 2121 transitions. Word has length 1008 [2022-12-13 18:04:55,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:04:55,329 INFO L495 AbstractCegarLoop]: Abstraction has 2017 states and 2121 transitions. [2022-12-13 18:04:55,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 40.333333333333336) internal successors, (605), 15 states have internal predecessors, (605), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:55,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 2121 transitions. [2022-12-13 18:04:55,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1070 [2022-12-13 18:04:55,336 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:04:55,336 INFO L195 NwaCegarLoop]: trace histogram [20, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:04:55,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 18:04:55,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-12-13 18:04:55,538 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:04:55,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:55,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1004803881, now seen corresponding path program 1 times [2022-12-13 18:04:55,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:55,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348388416] [2022-12-13 18:04:55,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:55,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:58,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3489 backedges. 103 proven. 3353 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 18:04:58,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:58,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348388416] [2022-12-13 18:04:58,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348388416] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:04:58,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236732091] [2022-12-13 18:04:58,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:58,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:04:58,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:04:58,563 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:04:58,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 18:04:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:58,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 2823 conjuncts, 81 conjunts are in the unsatisfiable core [2022-12-13 18:04:58,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:05:00,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3489 backedges. 340 proven. 3116 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 18:05:00,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:05:01,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3489 backedges. 50 proven. 3406 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 18:05:01,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236732091] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:05:01,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:05:01,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 52 [2022-12-13 18:05:01,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220408703] [2022-12-13 18:05:01,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:05:01,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-12-13 18:05:01,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:05:01,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-12-13 18:05:01,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=2510, Unknown=0, NotChecked=0, Total=2652 [2022-12-13 18:05:01,906 INFO L87 Difference]: Start difference. First operand 2017 states and 2121 transitions. Second operand has 52 states, 52 states have (on average 30.98076923076923) internal successors, (1611), 52 states have internal predecessors, (1611), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:05:04,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:05:04,722 INFO L93 Difference]: Finished difference Result 2294 states and 2416 transitions. [2022-12-13 18:05:04,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-12-13 18:05:04,722 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 30.98076923076923) internal successors, (1611), 52 states have internal predecessors, (1611), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1069 [2022-12-13 18:05:04,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:05:04,723 INFO L225 Difference]: With dead ends: 2294 [2022-12-13 18:05:04,723 INFO L226 Difference]: Without dead ends: 0 [2022-12-13 18:05:04,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2255 GetRequests, 2147 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2615 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=778, Invalid=10352, Unknown=0, NotChecked=0, Total=11130 [2022-12-13 18:05:04,726 INFO L413 NwaCegarLoop]: 1302 mSDtfsCounter, 4932 mSDsluCounter, 40421 mSDsCounter, 0 mSdLazyCounter, 2783 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4932 SdHoareTripleChecker+Valid, 41723 SdHoareTripleChecker+Invalid, 2795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:05:04,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4932 Valid, 41723 Invalid, 2795 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 2783 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 18:05:04,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-13 18:05:04,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-13 18:05:04,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:05:04,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 18:05:04,726 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1069 [2022-12-13 18:05:04,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:05:04,727 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 18:05:04,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 30.98076923076923) internal successors, (1611), 52 states have internal predecessors, (1611), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:05:04,727 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-13 18:05:04,727 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-13 18:05:04,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 18:05:04,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 18:05:04,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c168492f-78f0-4ae7-8d07-61525cf09155/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-13 18:05:04,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-13 18:05:16,130 WARN L233 SmtUtils]: Spent 11.16s on a formula simplification. DAG size of input: 245 DAG size of output: 245 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-13 18:05:48,765 WARN L233 SmtUtils]: Spent 32.63s on a formula simplification. DAG size of input: 190 DAG size of output: 184 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)