./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/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_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/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_ca6a51de-74ea-44d4-ac63-ecb956390046/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 256d604ca5845ed70fae4c0c59880096896900821991ad09252cbc35739a584c --- 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 19:32:52,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:32:52,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:32:52,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:32:52,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:32:52,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:32:52,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:32:52,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:32:52,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:32:52,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:32:52,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:32:52,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:32:52,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:32:52,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:32:52,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:32:52,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:32:52,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:32:52,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:32:52,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:32:52,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:32:52,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:32:52,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:32:52,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:32:52,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:32:52,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:32:52,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:32:52,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:32:52,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:32:52,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:32:52,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:32:52,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:32:52,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:32:52,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:32:52,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:32:52,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:32:52,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:32:52,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:32:52,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:32:52,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:32:52,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:32:52,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:32:52,414 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 19:32:52,429 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:32:52,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:32:52,430 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:32:52,430 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:32:52,430 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:32:52,430 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:32:52,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:32:52,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:32:52,431 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:32:52,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:32:52,431 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:32:52,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:32:52,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:32:52,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:32:52,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:32:52,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:32:52,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:32:52,432 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:32:52,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:32:52,432 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:32:52,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:32:52,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:32:52,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:32:52,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:32:52,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:32:52,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:32:52,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:32:52,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:32:52,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:32:52,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:32:52,434 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:32:52,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:32:52,434 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:32:52,434 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:32:52,434 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:32:52,434 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_ca6a51de-74ea-44d4-ac63-ecb956390046/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 256d604ca5845ed70fae4c0c59880096896900821991ad09252cbc35739a584c [2022-12-13 19:32:52,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:32:52,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:32:52,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:32:52,616 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:32:52,617 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:32:52,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c [2022-12-13 19:32:55,160 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:32:55,398 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:32:55,398 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c [2022-12-13 19:32:55,412 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/data/8619a16e5/c165b541e3b74828a34b3703ef2895de/FLAGbfd1e42b1 [2022-12-13 19:32:55,757 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/data/8619a16e5/c165b541e3b74828a34b3703ef2895de [2022-12-13 19:32:55,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:32:55,767 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:32:55,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:32:55,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:32:55,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:32:55,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:32:55" (1/1) ... [2022-12-13 19:32:55,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3693ff5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:32:55, skipping insertion in model container [2022-12-13 19:32:55,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:32:55" (1/1) ... [2022-12-13 19:32:55,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:32:55,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:32:56,157 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_ca6a51de-74ea-44d4-ac63-ecb956390046/sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c[40079,40092] [2022-12-13 19:32:56,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:32:56,239 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:32:56,283 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_ca6a51de-74ea-44d4-ac63-ecb956390046/sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c[40079,40092] [2022-12-13 19:32:56,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:32:56,353 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:32:56,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:32:56 WrapperNode [2022-12-13 19:32:56,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:32:56,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:32:56,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:32:56,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:32:56,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:32:56" (1/1) ... [2022-12-13 19:32:56,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:32:56" (1/1) ... [2022-12-13 19:32:56,428 INFO L138 Inliner]: procedures = 99, calls = 355, calls flagged for inlining = 29, calls inlined = 25, statements flattened = 981 [2022-12-13 19:32:56,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:32:56,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:32:56,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:32:56,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:32:56,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:32:56" (1/1) ... [2022-12-13 19:32:56,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:32:56" (1/1) ... [2022-12-13 19:32:56,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:32:56" (1/1) ... [2022-12-13 19:32:56,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:32:56" (1/1) ... [2022-12-13 19:32:56,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:32:56" (1/1) ... [2022-12-13 19:32:56,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:32:56" (1/1) ... [2022-12-13 19:32:56,480 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:32:56" (1/1) ... [2022-12-13 19:32:56,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:32:56" (1/1) ... [2022-12-13 19:32:56,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:32:56,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:32:56,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:32:56,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:32:56,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:32:56" (1/1) ... [2022-12-13 19:32:56,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:32:56,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:32:56,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:32:56,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:32:56,554 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-12-13 19:32:56,554 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-12-13 19:32:56,554 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-13 19:32:56,554 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-13 19:32:56,554 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-13 19:32:56,554 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-13 19:32:56,554 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-12-13 19:32:56,554 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-12-13 19:32:56,555 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-13 19:32:56,555 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-13 19:32:56,555 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-13 19:32:56,555 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-13 19:32:56,555 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-13 19:32:56,555 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-13 19:32:56,555 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-12-13 19:32:56,556 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-12-13 19:32:56,556 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-12-13 19:32:56,556 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-12-13 19:32:56,556 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-13 19:32:56,556 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-13 19:32:56,556 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-13 19:32:56,557 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-13 19:32:56,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:32:56,557 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-12-13 19:32:56,557 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-12-13 19:32:56,557 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-12-13 19:32:56,557 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-12-13 19:32:56,557 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-12-13 19:32:56,557 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-12-13 19:32:56,557 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-13 19:32:56,557 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-13 19:32:56,557 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-13 19:32:56,558 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-13 19:32:56,558 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-12-13 19:32:56,558 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-12-13 19:32:56,558 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-13 19:32:56,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-13 19:32:56,558 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-13 19:32:56,558 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-13 19:32:56,558 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-13 19:32:56,559 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-13 19:32:56,559 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-13 19:32:56,559 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-13 19:32:56,559 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-13 19:32:56,559 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-13 19:32:56,559 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-13 19:32:56,559 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-13 19:32:56,559 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-13 19:32:56,559 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-13 19:32:56,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:32:56,560 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-13 19:32:56,560 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-13 19:32:56,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:32:56,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:32:56,560 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-13 19:32:56,560 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-13 19:32:56,560 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-12-13 19:32:56,560 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-12-13 19:32:56,692 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:32:56,694 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:32:57,506 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:32:57,517 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:32:57,517 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 19:32:57,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:32:57 BoogieIcfgContainer [2022-12-13 19:32:57,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:32:57,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:32:57,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:32:57,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:32:57,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:32:55" (1/3) ... [2022-12-13 19:32:57,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458238a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:32:57, skipping insertion in model container [2022-12-13 19:32:57,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:32:56" (2/3) ... [2022-12-13 19:32:57,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458238a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:32:57, skipping insertion in model container [2022-12-13 19:32:57,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:32:57" (3/3) ... [2022-12-13 19:32:57,528 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product32.cil.c [2022-12-13 19:32:57,544 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:32:57,544 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 19:32:57,594 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:32:57,598 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;@58e540b4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:32:57,598 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 19:32:57,603 INFO L276 IsEmpty]: Start isEmpty. Operand has 605 states, 471 states have (on average 1.6772823779193207) internal successors, (790), 494 states have internal predecessors, (790), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 98 states have call predecessors, (105), 105 states have call successors, (105) [2022-12-13 19:32:57,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-13 19:32:57,612 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:32:57,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:32:57,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:32:57,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:32:57,617 INFO L85 PathProgramCache]: Analyzing trace with hash -782155594, now seen corresponding path program 1 times [2022-12-13 19:32:57,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:32:57,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443058772] [2022-12-13 19:32:57,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:32:57,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:32:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:57,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:32:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:57,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:32:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:58,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:32:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:58,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 19:32:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:58,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:32:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:58,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:32:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:58,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:32:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:58,243 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 19:32:58,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:32:58,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443058772] [2022-12-13 19:32:58,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443058772] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:32:58,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:32:58,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:32:58,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605040818] [2022-12-13 19:32:58,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:32:58,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:32:58,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:32:58,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:32:58,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:32:58,284 INFO L87 Difference]: Start difference. First operand has 605 states, 471 states have (on average 1.6772823779193207) internal successors, (790), 494 states have internal predecessors, (790), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 98 states have call predecessors, (105), 105 states have call successors, (105) Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:33:03,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:33:03,030 INFO L93 Difference]: Finished difference Result 1353 states and 2269 transitions. [2022-12-13 19:33:03,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:33:03,033 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-12-13 19:33:03,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:33:03,053 INFO L225 Difference]: With dead ends: 1353 [2022-12-13 19:33:03,053 INFO L226 Difference]: Without dead ends: 760 [2022-12-13 19:33:03,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:33:03,064 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 1222 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 2811 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 3099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 2811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:33:03,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1313 Valid, 1226 Invalid, 3099 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [288 Valid, 2811 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-12-13 19:33:03,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-12-13 19:33:03,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 597. [2022-12-13 19:33:03,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 465 states have (on average 1.6731182795698925) internal successors, (778), 486 states have internal predecessors, (778), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-12-13 19:33:03,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 983 transitions. [2022-12-13 19:33:03,224 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 983 transitions. Word has length 60 [2022-12-13 19:33:03,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:33:03,224 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 983 transitions. [2022-12-13 19:33:03,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:33:03,225 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 983 transitions. [2022-12-13 19:33:03,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 19:33:03,228 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:33:03,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:33:03,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:33:03,229 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:33:03,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:33:03,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1355604, now seen corresponding path program 1 times [2022-12-13 19:33:03,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:33:03,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654278289] [2022-12-13 19:33:03,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:33:03,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:33:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:03,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:33:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:03,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:03,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:33:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:03,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 19:33:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:03,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:03,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:03,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:33:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:03,622 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 19:33:03,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:33:03,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654278289] [2022-12-13 19:33:03,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654278289] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:33:03,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:33:03,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:33:03,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257794505] [2022-12-13 19:33:03,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:33:03,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:33:03,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:33:03,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:33:03,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:33:03,625 INFO L87 Difference]: Start difference. First operand 597 states and 983 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:33:08,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:33:08,485 INFO L93 Difference]: Finished difference Result 1339 states and 2235 transitions. [2022-12-13 19:33:08,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:33:08,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-12-13 19:33:08,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:33:08,492 INFO L225 Difference]: With dead ends: 1339 [2022-12-13 19:33:08,493 INFO L226 Difference]: Without dead ends: 760 [2022-12-13 19:33:08,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:33:08,496 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 742 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 2991 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 3116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-12-13 19:33:08,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 1212 Invalid, 3116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2991 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-12-13 19:33:08,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-12-13 19:33:08,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 597. [2022-12-13 19:33:08,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 465 states have (on average 1.6709677419354838) internal successors, (777), 486 states have internal predecessors, (777), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-12-13 19:33:08,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 982 transitions. [2022-12-13 19:33:08,578 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 982 transitions. Word has length 63 [2022-12-13 19:33:08,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:33:08,579 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 982 transitions. [2022-12-13 19:33:08,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:33:08,579 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 982 transitions. [2022-12-13 19:33:08,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-13 19:33:08,581 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:33:08,581 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 19:33:08,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:33:08,581 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:33:08,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:33:08,582 INFO L85 PathProgramCache]: Analyzing trace with hash -370405055, now seen corresponding path program 1 times [2022-12-13 19:33:08,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:33:08,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63837381] [2022-12-13 19:33:08,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:33:08,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:33:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:08,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:33:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:08,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:08,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:33:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:08,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 19:33:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:08,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:08,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:08,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:33:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:08,889 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 19:33:08,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:33:08,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63837381] [2022-12-13 19:33:08,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63837381] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:33:08,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:33:08,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:33:08,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626756797] [2022-12-13 19:33:08,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:33:08,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:33:08,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:33:08,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:33:08,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:33:08,891 INFO L87 Difference]: Start difference. First operand 597 states and 982 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:33:13,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:33:13,517 INFO L93 Difference]: Finished difference Result 1339 states and 2234 transitions. [2022-12-13 19:33:13,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:33:13,518 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2022-12-13 19:33:13,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:33:13,523 INFO L225 Difference]: With dead ends: 1339 [2022-12-13 19:33:13,523 INFO L226 Difference]: Without dead ends: 760 [2022-12-13 19:33:13,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:33:13,527 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 739 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 2989 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 3112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:33:13,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 1227 Invalid, 3112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2989 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-13 19:33:13,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-12-13 19:33:13,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 597. [2022-12-13 19:33:13,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 465 states have (on average 1.6688172043010752) internal successors, (776), 486 states have internal predecessors, (776), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-12-13 19:33:13,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 981 transitions. [2022-12-13 19:33:13,621 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 981 transitions. Word has length 64 [2022-12-13 19:33:13,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:33:13,622 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 981 transitions. [2022-12-13 19:33:13,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:33:13,622 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 981 transitions. [2022-12-13 19:33:13,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 19:33:13,623 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:33:13,623 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 19:33:13,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 19:33:13,623 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:33:13,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:33:13,624 INFO L85 PathProgramCache]: Analyzing trace with hash 111803336, now seen corresponding path program 1 times [2022-12-13 19:33:13,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:33:13,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505788430] [2022-12-13 19:33:13,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:33:13,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:33:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:13,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:33:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:13,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:13,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:33:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:13,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 19:33:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:13,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:13,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:13,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:33:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:13,932 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 19:33:13,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:33:13,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505788430] [2022-12-13 19:33:13,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505788430] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:33:13,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:33:13,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:33:13,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632287650] [2022-12-13 19:33:13,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:33:13,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:33:13,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:33:13,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:33:13,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:33:13,933 INFO L87 Difference]: Start difference. First operand 597 states and 981 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:33:17,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:33:17,686 INFO L93 Difference]: Finished difference Result 1339 states and 2233 transitions. [2022-12-13 19:33:17,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:33:17,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-12-13 19:33:17,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:33:17,690 INFO L225 Difference]: With dead ends: 1339 [2022-12-13 19:33:17,690 INFO L226 Difference]: Without dead ends: 760 [2022-12-13 19:33:17,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:33:17,692 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 1207 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 2809 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1298 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 3095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 2809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:33:17,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1298 Valid, 1207 Invalid, 3095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 2809 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 19:33:17,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-12-13 19:33:17,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 597. [2022-12-13 19:33:17,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 465 states have (on average 1.6666666666666667) internal successors, (775), 486 states have internal predecessors, (775), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-12-13 19:33:17,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 980 transitions. [2022-12-13 19:33:17,764 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 980 transitions. Word has length 65 [2022-12-13 19:33:17,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:33:17,764 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 980 transitions. [2022-12-13 19:33:17,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:33:17,764 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 980 transitions. [2022-12-13 19:33:17,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 19:33:17,765 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:33:17,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:33:17,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 19:33:17,765 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:33:17,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:33:17,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1213201053, now seen corresponding path program 1 times [2022-12-13 19:33:17,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:33:17,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592912197] [2022-12-13 19:33:17,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:33:17,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:33:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:17,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:33:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:17,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:17,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 19:33:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:17,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 19:33:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:33:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,029 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 19:33:18,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:33:18,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592912197] [2022-12-13 19:33:18,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592912197] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:33:18,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:33:18,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:33:18,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969283668] [2022-12-13 19:33:18,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:33:18,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:33:18,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:33:18,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:33:18,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:33:18,031 INFO L87 Difference]: Start difference. First operand 597 states and 980 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:33:22,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:33:22,108 INFO L93 Difference]: Finished difference Result 1339 states and 2232 transitions. [2022-12-13 19:33:22,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:33:22,109 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-12-13 19:33:22,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:33:22,112 INFO L225 Difference]: With dead ends: 1339 [2022-12-13 19:33:22,112 INFO L226 Difference]: Without dead ends: 760 [2022-12-13 19:33:22,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:33:22,114 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 1208 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 2807 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 3099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 2807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-13 19:33:22,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 1183 Invalid, 3099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 2807 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-13 19:33:22,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-12-13 19:33:22,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 597. [2022-12-13 19:33:22,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 465 states have (on average 1.664516129032258) internal successors, (774), 486 states have internal predecessors, (774), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-12-13 19:33:22,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 979 transitions. [2022-12-13 19:33:22,210 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 979 transitions. Word has length 66 [2022-12-13 19:33:22,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:33:22,210 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 979 transitions. [2022-12-13 19:33:22,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:33:22,211 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 979 transitions. [2022-12-13 19:33:22,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 19:33:22,212 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:33:22,212 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 19:33:22,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 19:33:22,212 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:33:22,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:33:22,213 INFO L85 PathProgramCache]: Analyzing trace with hash 34631396, now seen corresponding path program 1 times [2022-12-13 19:33:22,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:33:22,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382909948] [2022-12-13 19:33:22,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:33:22,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:33:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:22,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:33:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:22,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:22,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:33:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:22,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:33:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:22,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:22,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:22,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:33:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:22,622 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 19:33:22,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:33:22,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382909948] [2022-12-13 19:33:22,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382909948] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:33:22,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:33:22,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 19:33:22,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93325462] [2022-12-13 19:33:22,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:33:22,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:33:22,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:33:22,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:33:22,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:33:22,625 INFO L87 Difference]: Start difference. First operand 597 states and 979 transitions. Second operand has 11 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 19:33:28,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:33:28,077 INFO L93 Difference]: Finished difference Result 1316 states and 2182 transitions. [2022-12-13 19:33:28,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:33:28,078 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 67 [2022-12-13 19:33:28,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:33:28,081 INFO L225 Difference]: With dead ends: 1316 [2022-12-13 19:33:28,081 INFO L226 Difference]: Without dead ends: 786 [2022-12-13 19:33:28,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-12-13 19:33:28,084 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 1344 mSDsluCounter, 2368 mSDsCounter, 0 mSdLazyCounter, 6965 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 7262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 6965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-13 19:33:28,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1436 Valid, 2734 Invalid, 7262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [297 Valid, 6965 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-12-13 19:33:28,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-12-13 19:33:28,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 610. [2022-12-13 19:33:28,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 475 states have (on average 1.6610526315789473) internal successors, (789), 498 states have internal predecessors, (789), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-12-13 19:33:28,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 998 transitions. [2022-12-13 19:33:28,178 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 998 transitions. Word has length 67 [2022-12-13 19:33:28,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:33:28,178 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 998 transitions. [2022-12-13 19:33:28,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 19:33:28,178 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 998 transitions. [2022-12-13 19:33:28,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 19:33:28,179 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:33:28,179 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 19:33:28,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 19:33:28,180 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:33:28,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:33:28,180 INFO L85 PathProgramCache]: Analyzing trace with hash -205908733, now seen corresponding path program 1 times [2022-12-13 19:33:28,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:33:28,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074576355] [2022-12-13 19:33:28,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:33:28,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:33:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:28,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:33:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:28,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:28,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:33:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:28,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:33:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:28,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:28,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:28,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:33:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:28,464 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 19:33:28,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:33:28,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074576355] [2022-12-13 19:33:28,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074576355] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:33:28,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:33:28,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:33:28,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192701999] [2022-12-13 19:33:28,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:33:28,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:33:28,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:33:28,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:33:28,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:33:28,465 INFO L87 Difference]: Start difference. First operand 610 states and 998 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:33:32,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:33:32,382 INFO L93 Difference]: Finished difference Result 1330 states and 2205 transitions. [2022-12-13 19:33:32,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:33:32,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-12-13 19:33:32,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:33:32,385 INFO L225 Difference]: With dead ends: 1330 [2022-12-13 19:33:32,385 INFO L226 Difference]: Without dead ends: 782 [2022-12-13 19:33:32,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:33:32,387 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 1298 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 2723 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 3012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 2723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-13 19:33:32,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1389 Valid, 1193 Invalid, 3012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 2723 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-13 19:33:32,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-12-13 19:33:32,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 610. [2022-12-13 19:33:32,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 475 states have (on average 1.6505263157894736) internal successors, (784), 498 states have internal predecessors, (784), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-12-13 19:33:32,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 993 transitions. [2022-12-13 19:33:32,476 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 993 transitions. Word has length 67 [2022-12-13 19:33:32,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:33:32,476 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 993 transitions. [2022-12-13 19:33:32,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:33:32,477 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 993 transitions. [2022-12-13 19:33:32,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 19:33:32,478 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:33:32,478 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 19:33:32,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 19:33:32,478 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:33:32,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:33:32,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1385123930, now seen corresponding path program 1 times [2022-12-13 19:33:32,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:33:32,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154941309] [2022-12-13 19:33:32,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:33:32,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:33:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:32,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:33:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:32,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:32,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:33:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:32,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 19:33:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:32,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:32,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:32,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:33:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:32,717 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 19:33:32,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:33:32,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154941309] [2022-12-13 19:33:32,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154941309] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:33:32,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:33:32,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:33:32,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224089222] [2022-12-13 19:33:32,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:33:32,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:33:32,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:33:32,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:33:32,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:33:32,719 INFO L87 Difference]: Start difference. First operand 610 states and 993 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:33:36,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:33:36,248 INFO L93 Difference]: Finished difference Result 1330 states and 2200 transitions. [2022-12-13 19:33:36,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:33:36,248 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-12-13 19:33:36,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:33:36,251 INFO L225 Difference]: With dead ends: 1330 [2022-12-13 19:33:36,251 INFO L226 Difference]: Without dead ends: 782 [2022-12-13 19:33:36,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:33:36,253 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1298 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 2708 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 3005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 2708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:33:36,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1389 Valid, 1163 Invalid, 3005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 2708 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 19:33:36,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-12-13 19:33:36,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 610. [2022-12-13 19:33:36,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 475 states have (on average 1.64) internal successors, (779), 498 states have internal predecessors, (779), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-12-13 19:33:36,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 988 transitions. [2022-12-13 19:33:36,332 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 988 transitions. Word has length 68 [2022-12-13 19:33:36,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:33:36,332 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 988 transitions. [2022-12-13 19:33:36,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:33:36,332 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 988 transitions. [2022-12-13 19:33:36,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 19:33:36,333 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:33:36,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:33:36,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 19:33:36,333 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:33:36,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:33:36,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1529572568, now seen corresponding path program 1 times [2022-12-13 19:33:36,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:33:36,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641794891] [2022-12-13 19:33:36,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:33:36,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:33:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:36,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:33:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:36,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:36,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:33:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:36,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 19:33:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:36,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:36,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:36,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:33:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:36,567 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 19:33:36,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:33:36,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641794891] [2022-12-13 19:33:36,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641794891] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:33:36,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:33:36,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:33:36,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066166941] [2022-12-13 19:33:36,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:33:36,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:33:36,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:33:36,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:33:36,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:33:36,568 INFO L87 Difference]: Start difference. First operand 610 states and 988 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:33:40,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:33:40,767 INFO L93 Difference]: Finished difference Result 1330 states and 2195 transitions. [2022-12-13 19:33:40,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:33:40,768 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-12-13 19:33:40,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:33:40,771 INFO L225 Difference]: With dead ends: 1330 [2022-12-13 19:33:40,771 INFO L226 Difference]: Without dead ends: 782 [2022-12-13 19:33:40,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:33:40,772 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 827 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 2869 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 3000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-13 19:33:40,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 1175 Invalid, 3000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2869 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-13 19:33:40,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-12-13 19:33:40,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 610. [2022-12-13 19:33:40,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 475 states have (on average 1.6294736842105264) internal successors, (774), 498 states have internal predecessors, (774), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-12-13 19:33:40,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 983 transitions. [2022-12-13 19:33:40,855 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 983 transitions. Word has length 69 [2022-12-13 19:33:40,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:33:40,855 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 983 transitions. [2022-12-13 19:33:40,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:33:40,856 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 983 transitions. [2022-12-13 19:33:40,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-13 19:33:40,857 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:33:40,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:33:40,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 19:33:40,857 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:33:40,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:33:40,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1086078261, now seen corresponding path program 1 times [2022-12-13 19:33:40,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:33:40,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645311704] [2022-12-13 19:33:40,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:33:40,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:33:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:40,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:33:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:40,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:41,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:33:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:41,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 19:33:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:41,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:41,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:41,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:33:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:41,166 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 19:33:41,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:33:41,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645311704] [2022-12-13 19:33:41,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645311704] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:33:41,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:33:41,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 19:33:41,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985660973] [2022-12-13 19:33:41,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:33:41,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 19:33:41,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:33:41,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:33:41,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:33:41,167 INFO L87 Difference]: Start difference. First operand 610 states and 983 transitions. Second operand has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 19:33:46,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:33:46,970 INFO L93 Difference]: Finished difference Result 1322 states and 2172 transitions. [2022-12-13 19:33:46,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:33:46,971 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2022-12-13 19:33:46,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:33:46,973 INFO L225 Difference]: With dead ends: 1322 [2022-12-13 19:33:46,973 INFO L226 Difference]: Without dead ends: 789 [2022-12-13 19:33:46,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:33:46,975 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 820 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 5325 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 5456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 5325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:33:46,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 2115 Invalid, 5456 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [131 Valid, 5325 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-12-13 19:33:46,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2022-12-13 19:33:47,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 610. [2022-12-13 19:33:47,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 475 states have (on average 1.6273684210526316) internal successors, (773), 498 states have internal predecessors, (773), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-12-13 19:33:47,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 982 transitions. [2022-12-13 19:33:47,055 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 982 transitions. Word has length 70 [2022-12-13 19:33:47,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:33:47,055 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 982 transitions. [2022-12-13 19:33:47,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 19:33:47,055 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 982 transitions. [2022-12-13 19:33:47,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-13 19:33:47,056 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:33:47,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:33:47,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 19:33:47,056 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:33:47,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:33:47,057 INFO L85 PathProgramCache]: Analyzing trace with hash 338971051, now seen corresponding path program 1 times [2022-12-13 19:33:47,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:33:47,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637318662] [2022-12-13 19:33:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:33:47,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:33:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:47,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:33:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:47,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:47,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:33:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:47,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 19:33:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:47,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:47,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:47,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:33:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:47,290 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 19:33:47,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:33:47,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637318662] [2022-12-13 19:33:47,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637318662] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:33:47,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:33:47,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:33:47,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242955324] [2022-12-13 19:33:47,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:33:47,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:33:47,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:33:47,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:33:47,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:33:47,291 INFO L87 Difference]: Start difference. First operand 610 states and 982 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:33:51,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:33:51,046 INFO L93 Difference]: Finished difference Result 1330 states and 2187 transitions. [2022-12-13 19:33:51,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:33:51,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-12-13 19:33:51,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:33:51,050 INFO L225 Difference]: With dead ends: 1330 [2022-12-13 19:33:51,050 INFO L226 Difference]: Without dead ends: 782 [2022-12-13 19:33:51,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:33:51,052 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 1290 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 2682 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 2682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 19:33:51,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1381 Valid, 1180 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 2682 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 19:33:51,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-12-13 19:33:51,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 610. [2022-12-13 19:33:51,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 475 states have (on average 1.6168421052631579) internal successors, (768), 498 states have internal predecessors, (768), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-12-13 19:33:51,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 977 transitions. [2022-12-13 19:33:51,134 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 977 transitions. Word has length 70 [2022-12-13 19:33:51,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:33:51,134 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 977 transitions. [2022-12-13 19:33:51,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:33:51,134 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 977 transitions. [2022-12-13 19:33:51,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-13 19:33:51,135 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:33:51,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:33:51,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 19:33:51,135 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:33:51,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:33:51,136 INFO L85 PathProgramCache]: Analyzing trace with hash -736902229, now seen corresponding path program 1 times [2022-12-13 19:33:51,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:33:51,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587304931] [2022-12-13 19:33:51,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:33:51,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:33:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:51,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:33:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:51,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:51,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:33:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:51,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 19:33:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:51,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:51,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:51,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:33:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:51,445 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 19:33:51,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:33:51,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587304931] [2022-12-13 19:33:51,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587304931] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:33:51,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:33:51,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 19:33:51,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041459517] [2022-12-13 19:33:51,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:33:51,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 19:33:51,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:33:51,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:33:51,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:33:51,446 INFO L87 Difference]: Start difference. First operand 610 states and 977 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 19:33:57,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:33:57,357 INFO L93 Difference]: Finished difference Result 1343 states and 2197 transitions. [2022-12-13 19:33:57,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:33:57,358 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 71 [2022-12-13 19:33:57,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:33:57,361 INFO L225 Difference]: With dead ends: 1343 [2022-12-13 19:33:57,361 INFO L226 Difference]: Without dead ends: 807 [2022-12-13 19:33:57,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:33:57,362 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 1298 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 5115 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 5413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 5115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-12-13 19:33:57,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1390 Valid, 2112 Invalid, 5413 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [298 Valid, 5115 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-12-13 19:33:57,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2022-12-13 19:33:57,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 613. [2022-12-13 19:33:57,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 478 states have (on average 1.610878661087866) internal successors, (770), 501 states have internal predecessors, (770), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-12-13 19:33:57,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 979 transitions. [2022-12-13 19:33:57,437 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 979 transitions. Word has length 71 [2022-12-13 19:33:57,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:33:57,438 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 979 transitions. [2022-12-13 19:33:57,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 19:33:57,438 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 979 transitions. [2022-12-13 19:33:57,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-13 19:33:57,438 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:33:57,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:33:57,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 19:33:57,439 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:33:57,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:33:57,439 INFO L85 PathProgramCache]: Analyzing trace with hash 185765197, now seen corresponding path program 1 times [2022-12-13 19:33:57,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:33:57,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556620251] [2022-12-13 19:33:57,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:33:57,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:33:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:57,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:33:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:57,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:57,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:33:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:57,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 19:33:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:57,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:57,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:57,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:33:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:57,721 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 19:33:57,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:33:57,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556620251] [2022-12-13 19:33:57,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556620251] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:33:57,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:33:57,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:33:57,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536840652] [2022-12-13 19:33:57,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:33:57,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:33:57,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:33:57,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:33:57,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:33:57,722 INFO L87 Difference]: Start difference. First operand 613 states and 979 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:34:01,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:34:01,643 INFO L93 Difference]: Finished difference Result 1339 states and 2188 transitions. [2022-12-13 19:34:01,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:34:01,644 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-12-13 19:34:01,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:34:01,646 INFO L225 Difference]: With dead ends: 1339 [2022-12-13 19:34:01,646 INFO L226 Difference]: Without dead ends: 788 [2022-12-13 19:34:01,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:34:01,648 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 1284 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 2956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-13 19:34:01,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1375 Valid, 1180 Invalid, 2956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-13 19:34:01,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-12-13 19:34:01,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 613. [2022-12-13 19:34:01,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 478 states have (on average 1.600418410041841) internal successors, (765), 501 states have internal predecessors, (765), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-12-13 19:34:01,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 974 transitions. [2022-12-13 19:34:01,724 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 974 transitions. Word has length 71 [2022-12-13 19:34:01,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:34:01,724 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 974 transitions. [2022-12-13 19:34:01,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:34:01,725 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 974 transitions. [2022-12-13 19:34:01,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-13 19:34:01,725 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:34:01,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:34:01,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 19:34:01,726 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:34:01,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:34:01,726 INFO L85 PathProgramCache]: Analyzing trace with hash 409253328, now seen corresponding path program 1 times [2022-12-13 19:34:01,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:34:01,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141856668] [2022-12-13 19:34:01,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:34:01,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:34:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:01,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:34:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:01,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:01,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:34:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:02,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 19:34:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:02,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:02,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:02,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:34:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:02,031 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 19:34:02,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:34:02,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141856668] [2022-12-13 19:34:02,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141856668] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:34:02,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:34:02,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 19:34:02,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493224966] [2022-12-13 19:34:02,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:34:02,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 19:34:02,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:34:02,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:34:02,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:34:02,033 INFO L87 Difference]: Start difference. First operand 613 states and 974 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 19:34:07,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:34:07,174 INFO L93 Difference]: Finished difference Result 1349 states and 2194 transitions. [2022-12-13 19:34:07,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:34:07,175 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2022-12-13 19:34:07,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:34:07,178 INFO L225 Difference]: With dead ends: 1349 [2022-12-13 19:34:07,178 INFO L226 Difference]: Without dead ends: 813 [2022-12-13 19:34:07,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:34:07,180 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 807 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 5259 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 2075 SdHoareTripleChecker+Invalid, 5396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 5259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:34:07,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 2075 Invalid, 5396 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [137 Valid, 5259 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-12-13 19:34:07,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2022-12-13 19:34:07,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 617. [2022-12-13 19:34:07,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 482 states have (on average 1.5933609958506223) internal successors, (768), 505 states have internal predecessors, (768), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-12-13 19:34:07,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 977 transitions. [2022-12-13 19:34:07,257 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 977 transitions. Word has length 72 [2022-12-13 19:34:07,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:34:07,258 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 977 transitions. [2022-12-13 19:34:07,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 19:34:07,258 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 977 transitions. [2022-12-13 19:34:07,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-13 19:34:07,258 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:34:07,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:34:07,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 19:34:07,259 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:34:07,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:34:07,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1782835120, now seen corresponding path program 1 times [2022-12-13 19:34:07,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:34:07,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424108860] [2022-12-13 19:34:07,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:34:07,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:34:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:07,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:34:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:07,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:07,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:34:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:07,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 19:34:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:07,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:07,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:07,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:34:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:07,512 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 19:34:07,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:34:07,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424108860] [2022-12-13 19:34:07,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424108860] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:34:07,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:34:07,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:34:07,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779446762] [2022-12-13 19:34:07,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:34:07,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:34:07,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:34:07,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:34:07,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:34:07,514 INFO L87 Difference]: Start difference. First operand 617 states and 977 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:34:11,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:34:11,872 INFO L93 Difference]: Finished difference Result 1387 states and 2233 transitions. [2022-12-13 19:34:11,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:34:11,872 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-12-13 19:34:11,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:34:11,875 INFO L225 Difference]: With dead ends: 1387 [2022-12-13 19:34:11,875 INFO L226 Difference]: Without dead ends: 768 [2022-12-13 19:34:11,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:34:11,876 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 1198 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2703 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 2991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 2703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-13 19:34:11,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1289 Valid, 1171 Invalid, 2991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 2703 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-13 19:34:11,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-12-13 19:34:11,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 598. [2022-12-13 19:34:11,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 466 states have (on average 1.6008583690987124) internal successors, (746), 487 states have internal predecessors, (746), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-12-13 19:34:11,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 951 transitions. [2022-12-13 19:34:11,957 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 951 transitions. Word has length 72 [2022-12-13 19:34:11,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:34:11,957 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 951 transitions. [2022-12-13 19:34:11,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:34:11,957 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 951 transitions. [2022-12-13 19:34:11,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-13 19:34:11,958 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:34:11,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:34:11,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 19:34:11,958 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:34:11,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:34:11,958 INFO L85 PathProgramCache]: Analyzing trace with hash 491970384, now seen corresponding path program 1 times [2022-12-13 19:34:11,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:34:11,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591710199] [2022-12-13 19:34:11,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:34:11,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:34:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:12,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:34:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:12,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:12,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:34:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:12,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:34:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:12,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:12,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:12,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:34:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:12,253 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 19:34:12,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:34:12,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591710199] [2022-12-13 19:34:12,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591710199] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:34:12,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:34:12,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 19:34:12,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138981349] [2022-12-13 19:34:12,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:34:12,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 19:34:12,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:34:12,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:34:12,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:34:12,254 INFO L87 Difference]: Start difference. First operand 598 states and 951 transitions. Second operand has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 19:34:17,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:34:17,338 INFO L93 Difference]: Finished difference Result 1322 states and 2148 transitions. [2022-12-13 19:34:17,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:34:17,338 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2022-12-13 19:34:17,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:34:17,341 INFO L225 Difference]: With dead ends: 1322 [2022-12-13 19:34:17,341 INFO L226 Difference]: Without dead ends: 789 [2022-12-13 19:34:17,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:34:17,342 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 1255 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 5023 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 5321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 5023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:34:17,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1346 Valid, 2051 Invalid, 5321 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [298 Valid, 5023 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-13 19:34:17,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2022-12-13 19:34:17,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 603. [2022-12-13 19:34:17,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 471 states have (on average 1.59447983014862) internal successors, (751), 492 states have internal predecessors, (751), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-12-13 19:34:17,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 956 transitions. [2022-12-13 19:34:17,427 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 956 transitions. Word has length 73 [2022-12-13 19:34:17,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:34:17,427 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 956 transitions. [2022-12-13 19:34:17,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 19:34:17,428 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 956 transitions. [2022-12-13 19:34:17,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-13 19:34:17,428 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:34:17,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:34:17,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 19:34:17,428 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:34:17,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:34:17,429 INFO L85 PathProgramCache]: Analyzing trace with hash -45503069, now seen corresponding path program 1 times [2022-12-13 19:34:17,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:34:17,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792729224] [2022-12-13 19:34:17,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:34:17,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:34:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:17,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:34:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:17,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:17,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:34:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:17,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:34:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:17,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:17,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:17,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:34:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:17,675 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 19:34:17,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:34:17,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792729224] [2022-12-13 19:34:17,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792729224] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:34:17,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:34:17,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:34:17,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124109769] [2022-12-13 19:34:17,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:34:17,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:34:17,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:34:17,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:34:17,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:34:17,677 INFO L87 Difference]: Start difference. First operand 603 states and 956 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:34:21,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:34:21,479 INFO L93 Difference]: Finished difference Result 1320 states and 2143 transitions. [2022-12-13 19:34:21,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 19:34:21,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2022-12-13 19:34:21,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:34:21,482 INFO L225 Difference]: With dead ends: 1320 [2022-12-13 19:34:21,482 INFO L226 Difference]: Without dead ends: 766 [2022-12-13 19:34:21,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:34:21,484 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 1235 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 2630 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 2630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 19:34:21,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1326 Valid, 1188 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 2630 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 19:34:21,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-12-13 19:34:21,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 603. [2022-12-13 19:34:21,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 471 states have (on average 1.585987261146497) internal successors, (747), 492 states have internal predecessors, (747), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-12-13 19:34:21,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 952 transitions. [2022-12-13 19:34:21,561 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 952 transitions. Word has length 74 [2022-12-13 19:34:21,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:34:21,562 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 952 transitions. [2022-12-13 19:34:21,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:34:21,562 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 952 transitions. [2022-12-13 19:34:21,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-13 19:34:21,562 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:34:21,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:34:21,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 19:34:21,563 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:34:21,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:34:21,563 INFO L85 PathProgramCache]: Analyzing trace with hash 2003884773, now seen corresponding path program 1 times [2022-12-13 19:34:21,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:34:21,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102009913] [2022-12-13 19:34:21,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:34:21,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:34:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:21,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:34:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:21,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:21,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:34:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:21,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:34:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:21,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:21,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:21,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:34:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:21,964 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 19:34:21,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:34:21,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102009913] [2022-12-13 19:34:21,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102009913] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:34:21,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:34:21,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 19:34:21,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262656766] [2022-12-13 19:34:21,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:34:21,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:34:21,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:34:21,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:34:21,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:34:21,966 INFO L87 Difference]: Start difference. First operand 603 states and 952 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-13 19:34:30,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:34:30,765 INFO L93 Difference]: Finished difference Result 2150 states and 3583 transitions. [2022-12-13 19:34:30,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:34:30,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 74 [2022-12-13 19:34:30,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:34:30,771 INFO L225 Difference]: With dead ends: 2150 [2022-12-13 19:34:30,772 INFO L226 Difference]: Without dead ends: 1625 [2022-12-13 19:34:30,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-12-13 19:34:30,773 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 2822 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 5284 mSolverCounterSat, 799 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2919 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 6083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 799 IncrementalHoareTripleChecker+Valid, 5284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:34:30,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2919 Valid, 1771 Invalid, 6083 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [799 Valid, 5284 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-12-13 19:34:30,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2022-12-13 19:34:30,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1145. [2022-12-13 19:34:30,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 892 states have (on average 1.6210762331838564) internal successors, (1446), 922 states have internal predecessors, (1446), 204 states have call successors, (204), 47 states have call predecessors, (204), 48 states have return successors, (206), 188 states have call predecessors, (206), 199 states have call successors, (206) [2022-12-13 19:34:30,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1856 transitions. [2022-12-13 19:34:30,965 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1856 transitions. Word has length 74 [2022-12-13 19:34:30,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:34:30,965 INFO L495 AbstractCegarLoop]: Abstraction has 1145 states and 1856 transitions. [2022-12-13 19:34:30,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-13 19:34:30,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1856 transitions. [2022-12-13 19:34:30,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-12-13 19:34:30,967 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:34:30,967 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:30,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 19:34:30,968 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:34:30,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:34:30,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1629547813, now seen corresponding path program 1 times [2022-12-13 19:34:30,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:34:30,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280092506] [2022-12-13 19:34:30,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:34:30,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:34:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:31,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:34:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:31,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:31,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:34:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:31,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:34:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:31,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:31,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:31,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:34:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:31,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:31,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:31,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:34:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:31,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 19:34:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:31,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:31,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:31,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:34:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:31,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 19:34:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:31,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 19:34:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:31,453 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 19:34:31,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:34:31,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280092506] [2022-12-13 19:34:31,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280092506] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:34:31,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:34:31,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 19:34:31,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168702938] [2022-12-13 19:34:31,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:34:31,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:34:31,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:34:31,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:34:31,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:34:31,455 INFO L87 Difference]: Start difference. First operand 1145 states and 1856 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-13 19:34:41,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:34:41,044 INFO L93 Difference]: Finished difference Result 4129 states and 6980 transitions. [2022-12-13 19:34:41,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:34:41,045 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 129 [2022-12-13 19:34:41,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:34:41,056 INFO L225 Difference]: With dead ends: 4129 [2022-12-13 19:34:41,056 INFO L226 Difference]: Without dead ends: 3063 [2022-12-13 19:34:41,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2022-12-13 19:34:41,060 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 3279 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 3718 mSolverCounterSat, 1644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3292 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 5362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1644 IncrementalHoareTripleChecker+Valid, 3718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:34:41,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3292 Valid, 1769 Invalid, 5362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1644 Valid, 3718 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-12-13 19:34:41,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3063 states. [2022-12-13 19:34:41,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3063 to 2308. [2022-12-13 19:34:41,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2308 states, 1793 states have (on average 1.6402677077523704) internal successors, (2941), 1847 states have internal predecessors, (2941), 414 states have call successors, (414), 87 states have call predecessors, (414), 100 states have return successors, (454), 395 states have call predecessors, (454), 409 states have call successors, (454) [2022-12-13 19:34:41,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 3809 transitions. [2022-12-13 19:34:41,477 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 3809 transitions. Word has length 129 [2022-12-13 19:34:41,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:34:41,477 INFO L495 AbstractCegarLoop]: Abstraction has 2308 states and 3809 transitions. [2022-12-13 19:34:41,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-13 19:34:41,478 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 3809 transitions. [2022-12-13 19:34:41,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-12-13 19:34:41,480 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:34:41,480 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:41,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 19:34:41,480 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:34:41,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:34:41,480 INFO L85 PathProgramCache]: Analyzing trace with hash 250690341, now seen corresponding path program 1 times [2022-12-13 19:34:41,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:34:41,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329940486] [2022-12-13 19:34:41,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:34:41,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:34:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:41,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:34:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:41,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:41,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:34:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:41,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:34:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:41,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:42,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:42,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:34:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:42,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:42,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:42,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:34:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:42,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 19:34:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:42,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:42,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:42,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:34:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:42,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 19:34:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:42,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 19:34:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:42,222 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 19:34:42,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:34:42,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329940486] [2022-12-13 19:34:42,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329940486] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:34:42,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:34:42,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-13 19:34:42,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236948683] [2022-12-13 19:34:42,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:34:42,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 19:34:42,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:34:42,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 19:34:42,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:34:42,224 INFO L87 Difference]: Start difference. First operand 2308 states and 3809 transitions. Second operand has 16 states, 15 states have (on average 5.666666666666667) internal successors, (85), 11 states have internal predecessors, (85), 6 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2022-12-13 19:34:56,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:34:56,359 INFO L93 Difference]: Finished difference Result 7168 states and 12153 transitions. [2022-12-13 19:34:56,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 19:34:56,360 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.666666666666667) internal successors, (85), 11 states have internal predecessors, (85), 6 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 128 [2022-12-13 19:34:56,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:34:56,391 INFO L225 Difference]: With dead ends: 7168 [2022-12-13 19:34:56,391 INFO L226 Difference]: Without dead ends: 4938 [2022-12-13 19:34:56,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=321, Invalid=1319, Unknown=0, NotChecked=0, Total=1640 [2022-12-13 19:34:56,406 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 5057 mSDsluCounter, 3233 mSDsCounter, 0 mSdLazyCounter, 10415 mSolverCounterSat, 2496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5057 SdHoareTripleChecker+Valid, 3715 SdHoareTripleChecker+Invalid, 12911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2496 IncrementalHoareTripleChecker+Valid, 10415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:34:56,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5057 Valid, 3715 Invalid, 12911 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2496 Valid, 10415 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-12-13 19:34:56,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4938 states. [2022-12-13 19:34:57,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4938 to 3539. [2022-12-13 19:34:57,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3539 states, 2644 states have (on average 1.5990922844175492) internal successors, (4228), 2743 states have internal predecessors, (4228), 740 states have call successors, (740), 127 states have call predecessors, (740), 154 states have return successors, (812), 712 states have call predecessors, (812), 735 states have call successors, (812) [2022-12-13 19:34:57,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 5780 transitions. [2022-12-13 19:34:57,352 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 5780 transitions. Word has length 128 [2022-12-13 19:34:57,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:34:57,352 INFO L495 AbstractCegarLoop]: Abstraction has 3539 states and 5780 transitions. [2022-12-13 19:34:57,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.666666666666667) internal successors, (85), 11 states have internal predecessors, (85), 6 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2022-12-13 19:34:57,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 5780 transitions. [2022-12-13 19:34:57,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-12-13 19:34:57,354 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:34:57,364 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:57,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 19:34:57,364 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:34:57,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:34:57,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1279216089, now seen corresponding path program 1 times [2022-12-13 19:34:57,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:34:57,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123444240] [2022-12-13 19:34:57,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:34:57,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:34:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:57,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:34:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:57,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:57,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:34:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:57,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:34:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:57,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:57,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:57,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:34:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:57,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:57,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:57,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:34:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:57,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 19:34:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:57,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:57,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:57,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:34:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:57,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 19:34:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:57,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 19:34:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:57,986 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 19:34:57,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:34:57,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123444240] [2022-12-13 19:34:57,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123444240] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:34:57,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:34:57,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 19:34:57,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787911036] [2022-12-13 19:34:57,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:34:57,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 19:34:57,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:34:57,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 19:34:57,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:34:57,988 INFO L87 Difference]: Start difference. First operand 3539 states and 5780 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-13 19:35:05,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:35:05,958 INFO L93 Difference]: Finished difference Result 8183 states and 13930 transitions. [2022-12-13 19:35:05,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 19:35:05,959 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2022-12-13 19:35:05,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:35:05,977 INFO L225 Difference]: With dead ends: 8183 [2022-12-13 19:35:05,977 INFO L226 Difference]: Without dead ends: 4722 [2022-12-13 19:35:05,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-12-13 19:35:05,990 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 1904 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 4627 mSolverCounterSat, 713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 2225 SdHoareTripleChecker+Invalid, 5340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 4627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-12-13 19:35:05,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1916 Valid, 2225 Invalid, 5340 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [713 Valid, 4627 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-12-13 19:35:05,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4722 states. [2022-12-13 19:35:06,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4722 to 3571. [2022-12-13 19:35:06,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3571 states, 2668 states have (on average 1.593703148425787) internal successors, (4252), 2767 states have internal predecessors, (4252), 740 states have call successors, (740), 135 states have call predecessors, (740), 162 states have return successors, (820), 712 states have call predecessors, (820), 735 states have call successors, (820) [2022-12-13 19:35:06,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3571 states to 3571 states and 5812 transitions. [2022-12-13 19:35:06,905 INFO L78 Accepts]: Start accepts. Automaton has 3571 states and 5812 transitions. Word has length 129 [2022-12-13 19:35:06,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:35:06,905 INFO L495 AbstractCegarLoop]: Abstraction has 3571 states and 5812 transitions. [2022-12-13 19:35:06,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-13 19:35:06,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3571 states and 5812 transitions. [2022-12-13 19:35:06,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-12-13 19:35:06,907 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:35:06,908 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:35:06,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 19:35:06,908 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:35:06,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:35:06,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1590102705, now seen corresponding path program 1 times [2022-12-13 19:35:06,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:35:06,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058063606] [2022-12-13 19:35:06,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:35:06,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:35:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:07,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:35:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:07,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:07,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:35:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:07,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:35:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:07,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:07,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:07,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:35:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:07,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:07,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:07,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:35:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:07,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:35:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:07,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:07,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:07,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:35:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:07,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 19:35:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:07,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 19:35:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:07,561 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 19:35:07,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:35:07,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058063606] [2022-12-13 19:35:07,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058063606] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:35:07,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:35:07,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 19:35:07,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961710292] [2022-12-13 19:35:07,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:35:07,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 19:35:07,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:35:07,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 19:35:07,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:35:07,564 INFO L87 Difference]: Start difference. First operand 3571 states and 5812 transitions. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 6 states have internal predecessors, (93), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-13 19:35:14,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:35:14,704 INFO L93 Difference]: Finished difference Result 8255 states and 13982 transitions. [2022-12-13 19:35:14,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 19:35:14,705 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 6 states have internal predecessors, (93), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 131 [2022-12-13 19:35:14,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:35:14,721 INFO L225 Difference]: With dead ends: 8255 [2022-12-13 19:35:14,721 INFO L226 Difference]: Without dead ends: 4762 [2022-12-13 19:35:14,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-12-13 19:35:14,732 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 2370 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 4240 mSolverCounterSat, 868 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2382 SdHoareTripleChecker+Valid, 2142 SdHoareTripleChecker+Invalid, 5108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 868 IncrementalHoareTripleChecker+Valid, 4240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:35:14,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2382 Valid, 2142 Invalid, 5108 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [868 Valid, 4240 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-12-13 19:35:14,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4762 states. [2022-12-13 19:35:15,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4762 to 3611. [2022-12-13 19:35:15,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3611 states, 2700 states have (on average 1.5866666666666667) internal successors, (4284), 2799 states have internal predecessors, (4284), 740 states have call successors, (740), 143 states have call predecessors, (740), 170 states have return successors, (828), 712 states have call predecessors, (828), 735 states have call successors, (828) [2022-12-13 19:35:15,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3611 states to 3611 states and 5852 transitions. [2022-12-13 19:35:15,535 INFO L78 Accepts]: Start accepts. Automaton has 3611 states and 5852 transitions. Word has length 131 [2022-12-13 19:35:15,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:35:15,535 INFO L495 AbstractCegarLoop]: Abstraction has 3611 states and 5852 transitions. [2022-12-13 19:35:15,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 6 states have internal predecessors, (93), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-13 19:35:15,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3611 states and 5852 transitions. [2022-12-13 19:35:15,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-12-13 19:35:15,537 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:35:15,537 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-13 19:35:15,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 19:35:15,537 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:35:15,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:35:15,537 INFO L85 PathProgramCache]: Analyzing trace with hash -364467865, now seen corresponding path program 1 times [2022-12-13 19:35:15,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:35:15,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282023430] [2022-12-13 19:35:15,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:35:15,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:35:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:15,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:35:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:15,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:15,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:35:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:15,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:35:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:15,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:15,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:15,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:35:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:15,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:15,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:15,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 19:35:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:15,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 19:35:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:15,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:16,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:16,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 19:35:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:16,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:35:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:16,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 19:35:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:16,038 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 19:35:16,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:35:16,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282023430] [2022-12-13 19:35:16,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282023430] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:35:16,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:35:16,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 19:35:16,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716673948] [2022-12-13 19:35:16,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:35:16,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 19:35:16,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:35:16,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 19:35:16,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:35:16,040 INFO L87 Difference]: Start difference. First operand 3611 states and 5852 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-13 19:35:22,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:35:22,828 INFO L93 Difference]: Finished difference Result 8343 states and 14050 transitions. [2022-12-13 19:35:22,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 19:35:22,829 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 133 [2022-12-13 19:35:22,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:35:22,846 INFO L225 Difference]: With dead ends: 8343 [2022-12-13 19:35:22,846 INFO L226 Difference]: Without dead ends: 4810 [2022-12-13 19:35:22,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-12-13 19:35:22,855 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 2817 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 4162 mSolverCounterSat, 1035 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2829 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 5197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1035 IncrementalHoareTripleChecker+Valid, 4162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-12-13 19:35:22,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2829 Valid, 2080 Invalid, 5197 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1035 Valid, 4162 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-12-13 19:35:22,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2022-12-13 19:35:23,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 3659. [2022-12-13 19:35:23,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3659 states, 2740 states have (on average 1.578102189781022) internal successors, (4324), 2839 states have internal predecessors, (4324), 740 states have call successors, (740), 151 states have call predecessors, (740), 178 states have return successors, (836), 712 states have call predecessors, (836), 735 states have call successors, (836) [2022-12-13 19:35:23,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3659 states to 3659 states and 5900 transitions. [2022-12-13 19:35:23,667 INFO L78 Accepts]: Start accepts. Automaton has 3659 states and 5900 transitions. Word has length 133 [2022-12-13 19:35:23,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:35:23,668 INFO L495 AbstractCegarLoop]: Abstraction has 3659 states and 5900 transitions. [2022-12-13 19:35:23,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-13 19:35:23,668 INFO L276 IsEmpty]: Start isEmpty. Operand 3659 states and 5900 transitions. [2022-12-13 19:35:23,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-13 19:35:23,670 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:35:23,670 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-13 19:35:23,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 19:35:23,670 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:35:23,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:35:23,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1812856041, now seen corresponding path program 1 times [2022-12-13 19:35:23,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:35:23,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478099733] [2022-12-13 19:35:23,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:35:23,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:35:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:23,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:35:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:23,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:23,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:35:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:23,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:35:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:23,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:24,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:24,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:35:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:24,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:24,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:24,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 19:35:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:24,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 19:35:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:24,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:24,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:24,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 19:35:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:24,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 19:35:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:24,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:35:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:24,220 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 19:35:24,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:35:24,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478099733] [2022-12-13 19:35:24,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478099733] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:35:24,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:35:24,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 19:35:24,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265655699] [2022-12-13 19:35:24,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:35:24,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 19:35:24,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:35:24,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 19:35:24,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:35:24,221 INFO L87 Difference]: Start difference. First operand 3659 states and 5900 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-13 19:35:31,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:35:31,788 INFO L93 Difference]: Finished difference Result 8447 states and 14134 transitions. [2022-12-13 19:35:31,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 19:35:31,789 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 135 [2022-12-13 19:35:31,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:35:31,804 INFO L225 Difference]: With dead ends: 8447 [2022-12-13 19:35:31,804 INFO L226 Difference]: Without dead ends: 4866 [2022-12-13 19:35:31,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-12-13 19:35:31,814 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 1907 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 4480 mSolverCounterSat, 702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1919 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 5182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 4480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-12-13 19:35:31,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1919 Valid, 2158 Invalid, 5182 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [702 Valid, 4480 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-12-13 19:35:31,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4866 states. [2022-12-13 19:35:32,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4866 to 3715. [2022-12-13 19:35:32,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3715 states, 2788 states have (on average 1.5681492109038737) internal successors, (4372), 2887 states have internal predecessors, (4372), 740 states have call successors, (740), 159 states have call predecessors, (740), 186 states have return successors, (844), 712 states have call predecessors, (844), 735 states have call successors, (844) [2022-12-13 19:35:32,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3715 states to 3715 states and 5956 transitions. [2022-12-13 19:35:32,770 INFO L78 Accepts]: Start accepts. Automaton has 3715 states and 5956 transitions. Word has length 135 [2022-12-13 19:35:32,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:35:32,770 INFO L495 AbstractCegarLoop]: Abstraction has 3715 states and 5956 transitions. [2022-12-13 19:35:32,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-13 19:35:32,770 INFO L276 IsEmpty]: Start isEmpty. Operand 3715 states and 5956 transitions. [2022-12-13 19:35:32,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-12-13 19:35:32,772 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:35:32,772 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:35:32,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 19:35:32,772 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:35:32,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:35:32,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1035162969, now seen corresponding path program 1 times [2022-12-13 19:35:32,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:35:32,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332628118] [2022-12-13 19:35:32,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:35:32,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:35:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:32,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:35:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:33,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:33,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:35:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:33,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:35:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:33,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:33,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:33,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:35:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:33,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:33,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:33,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:35:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:33,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:35:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:33,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:33,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:33,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:35:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:33,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:35:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:33,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 19:35:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:33,631 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 19:35:33,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:35:33,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332628118] [2022-12-13 19:35:33,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332628118] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:35:33,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001599087] [2022-12-13 19:35:33,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:35:33,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:35:33,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:35:33,633 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:35:33,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:35:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:33,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 1704 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:35:33,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:35:34,084 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 19:35:34,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:35:34,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001599087] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:35:34,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:35:34,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 18 [2022-12-13 19:35:34,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653713077] [2022-12-13 19:35:34,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:35:34,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:35:34,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:35:34,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:35:34,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-12-13 19:35:34,085 INFO L87 Difference]: Start difference. First operand 3715 states and 5956 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-12-13 19:35:35,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:35:35,496 INFO L93 Difference]: Finished difference Result 3864 states and 6200 transitions. [2022-12-13 19:35:35,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:35:35,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 137 [2022-12-13 19:35:35,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:35:35,508 INFO L225 Difference]: With dead ends: 3864 [2022-12-13 19:35:35,508 INFO L226 Difference]: Without dead ends: 3849 [2022-12-13 19:35:35,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-12-13 19:35:35,510 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 906 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 19:35:35,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 2393 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 19:35:35,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3849 states. [2022-12-13 19:35:36,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3849 to 3727. [2022-12-13 19:35:36,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3727 states, 2800 states have (on average 1.5657142857142856) internal successors, (4384), 2899 states have internal predecessors, (4384), 740 states have call successors, (740), 159 states have call predecessors, (740), 186 states have return successors, (844), 712 states have call predecessors, (844), 735 states have call successors, (844) [2022-12-13 19:35:36,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 5968 transitions. [2022-12-13 19:35:36,354 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 5968 transitions. Word has length 137 [2022-12-13 19:35:36,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:35:36,354 INFO L495 AbstractCegarLoop]: Abstraction has 3727 states and 5968 transitions. [2022-12-13 19:35:36,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-12-13 19:35:36,355 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 5968 transitions. [2022-12-13 19:35:36,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-13 19:35:36,357 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:35:36,357 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:35:36,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:35:36,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:35:36,557 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:35:36,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:35:36,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1242522430, now seen corresponding path program 1 times [2022-12-13 19:35:36,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:35:36,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134396045] [2022-12-13 19:35:36,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:35:36,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:35:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:36,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:35:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:36,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:36,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:35:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:37,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:35:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:37,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:37,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:37,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:35:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:37,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:37,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:37,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:35:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:37,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:35:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:37,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:37,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:37,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:35:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:37,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:35:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:37,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 19:35:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:37,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 19:35:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:37,354 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 19:35:37,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:35:37,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134396045] [2022-12-13 19:35:37,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134396045] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:35:37,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:35:37,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 19:35:37,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149346869] [2022-12-13 19:35:37,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:35:37,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 19:35:37,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:35:37,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 19:35:37,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-12-13 19:35:37,356 INFO L87 Difference]: Start difference. First operand 3727 states and 5968 transitions. Second operand has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (16), 8 states have call predecessors, (16), 5 states have call successors, (16) [2022-12-13 19:35:55,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:35:55,933 INFO L93 Difference]: Finished difference Result 11968 states and 19976 transitions. [2022-12-13 19:35:55,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-12-13 19:35:55,933 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (16), 8 states have call predecessors, (16), 5 states have call successors, (16) Word has length 143 [2022-12-13 19:35:55,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:35:55,973 INFO L225 Difference]: With dead ends: 11968 [2022-12-13 19:35:55,973 INFO L226 Difference]: Without dead ends: 11953 [2022-12-13 19:35:55,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2066 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1079, Invalid=4773, Unknown=0, NotChecked=0, Total=5852 [2022-12-13 19:35:55,980 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 11881 mSDsluCounter, 2557 mSDsCounter, 0 mSdLazyCounter, 7578 mSolverCounterSat, 5162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11888 SdHoareTripleChecker+Valid, 3082 SdHoareTripleChecker+Invalid, 12740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5162 IncrementalHoareTripleChecker+Valid, 7578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-12-13 19:35:55,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11888 Valid, 3082 Invalid, 12740 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5162 Valid, 7578 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2022-12-13 19:35:55,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11953 states. [2022-12-13 19:35:57,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11953 to 4017. [2022-12-13 19:35:57,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4017 states, 3028 states have (on average 1.5449141347424042) internal successors, (4678), 3127 states have internal predecessors, (4678), 772 states have call successors, (772), 191 states have call predecessors, (772), 216 states have return successors, (894), 742 states have call predecessors, (894), 767 states have call successors, (894) [2022-12-13 19:35:57,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4017 states to 4017 states and 6344 transitions. [2022-12-13 19:35:57,151 INFO L78 Accepts]: Start accepts. Automaton has 4017 states and 6344 transitions. Word has length 143 [2022-12-13 19:35:57,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:35:57,151 INFO L495 AbstractCegarLoop]: Abstraction has 4017 states and 6344 transitions. [2022-12-13 19:35:57,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (16), 8 states have call predecessors, (16), 5 states have call successors, (16) [2022-12-13 19:35:57,151 INFO L276 IsEmpty]: Start isEmpty. Operand 4017 states and 6344 transitions. [2022-12-13 19:35:57,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-12-13 19:35:57,154 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:35:57,154 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-12-13 19:35:57,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 19:35:57,155 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:35:57,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:35:57,155 INFO L85 PathProgramCache]: Analyzing trace with hash 119210163, now seen corresponding path program 1 times [2022-12-13 19:35:57,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:35:57,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687570640] [2022-12-13 19:35:57,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:35:57,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:35:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:57,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:35:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:57,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:57,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:35:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:57,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:35:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:57,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:57,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:57,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:35:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:57,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:57,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:57,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:35:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:57,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:35:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:57,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:57,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:57,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:35:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:57,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:35:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:57,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 19:35:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:57,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 19:35:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:57,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 19:35:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:57,993 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 19:35:57,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:35:57,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687570640] [2022-12-13 19:35:57,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687570640] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:35:57,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961971269] [2022-12-13 19:35:57,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:35:57,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:35:57,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:35:57,995 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:35:57,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:35:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:58,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 1757 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 19:35:58,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:35:58,385 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 19:35:58,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:35:58,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961971269] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:35:58,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:35:58,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 21 [2022-12-13 19:35:58,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230462014] [2022-12-13 19:35:58,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:35:58,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:35:58,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:35:58,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:35:58,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2022-12-13 19:35:58,386 INFO L87 Difference]: Start difference. First operand 4017 states and 6344 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-12-13 19:36:01,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:36:01,422 INFO L93 Difference]: Finished difference Result 8479 states and 13574 transitions. [2022-12-13 19:36:01,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 19:36:01,422 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 154 [2022-12-13 19:36:01,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:36:01,435 INFO L225 Difference]: With dead ends: 8479 [2022-12-13 19:36:01,436 INFO L226 Difference]: Without dead ends: 4548 [2022-12-13 19:36:01,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-12-13 19:36:01,444 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 2241 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 5034 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2346 SdHoareTripleChecker+Valid, 1941 SdHoareTripleChecker+Invalid, 5543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 5034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 19:36:01,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2346 Valid, 1941 Invalid, 5543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 5034 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 19:36:01,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4548 states. [2022-12-13 19:36:02,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4548 to 4337. [2022-12-13 19:36:02,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4337 states, 3262 states have (on average 1.5432250153280196) internal successors, (5034), 3373 states have internal predecessors, (5034), 834 states have call successors, (834), 195 states have call predecessors, (834), 240 states have return successors, (996), 812 states have call predecessors, (996), 829 states have call successors, (996) [2022-12-13 19:36:02,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4337 states to 4337 states and 6864 transitions. [2022-12-13 19:36:02,607 INFO L78 Accepts]: Start accepts. Automaton has 4337 states and 6864 transitions. Word has length 154 [2022-12-13 19:36:02,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:36:02,607 INFO L495 AbstractCegarLoop]: Abstraction has 4337 states and 6864 transitions. [2022-12-13 19:36:02,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-12-13 19:36:02,607 INFO L276 IsEmpty]: Start isEmpty. Operand 4337 states and 6864 transitions. [2022-12-13 19:36:02,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-13 19:36:02,610 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:36:02,610 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-12-13 19:36:02,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 19:36:02,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 19:36:02,810 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:36:02,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:36:02,811 INFO L85 PathProgramCache]: Analyzing trace with hash -68764981, now seen corresponding path program 1 times [2022-12-13 19:36:02,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:36:02,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326584490] [2022-12-13 19:36:02,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:36:02,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:36:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:03,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:36:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:03,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:36:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:03,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:36:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:03,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:36:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:03,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:36:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:03,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:36:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:03,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:36:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:03,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:36:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:03,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:36:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:03,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:36:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:03,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:36:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:03,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:36:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:03,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:36:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:03,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:36:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:03,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:36:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:03,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:36:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:03,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 19:36:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:03,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:36:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:03,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 19:36:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:03,862 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 19:36:03,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:36:03,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326584490] [2022-12-13 19:36:03,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326584490] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:36:03,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549957867] [2022-12-13 19:36:03,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:36:03,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:36:03,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:36:03,864 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:36:03,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 19:36:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:04,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 19:36:04,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:36:04,120 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 19:36:04,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:36:04,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549957867] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:36:04,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:36:04,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [22] total 25 [2022-12-13 19:36:04,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668157130] [2022-12-13 19:36:04,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:36:04,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:36:04,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:36:04,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:36:04,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-12-13 19:36:04,122 INFO L87 Difference]: Start difference. First operand 4337 states and 6864 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-12-13 19:36:05,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:36:05,471 INFO L93 Difference]: Finished difference Result 4612 states and 7308 transitions. [2022-12-13 19:36:05,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:36:05,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 159 [2022-12-13 19:36:05,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:36:05,483 INFO L225 Difference]: With dead ends: 4612 [2022-12-13 19:36:05,484 INFO L226 Difference]: Without dead ends: 4597 [2022-12-13 19:36:05,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2022-12-13 19:36:05,485 INFO L413 NwaCegarLoop]: 995 mSDtfsCounter, 62 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 3881 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:36:05,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 3881 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:36:05,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4597 states. [2022-12-13 19:36:06,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4597 to 4373. [2022-12-13 19:36:06,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4373 states, 3298 states have (on average 1.5372953305033354) internal successors, (5070), 3409 states have internal predecessors, (5070), 834 states have call successors, (834), 195 states have call predecessors, (834), 240 states have return successors, (996), 812 states have call predecessors, (996), 829 states have call successors, (996) [2022-12-13 19:36:06,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4373 states to 4373 states and 6900 transitions. [2022-12-13 19:36:06,711 INFO L78 Accepts]: Start accepts. Automaton has 4373 states and 6900 transitions. Word has length 159 [2022-12-13 19:36:06,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:36:06,711 INFO L495 AbstractCegarLoop]: Abstraction has 4373 states and 6900 transitions. [2022-12-13 19:36:06,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-12-13 19:36:06,712 INFO L276 IsEmpty]: Start isEmpty. Operand 4373 states and 6900 transitions. [2022-12-13 19:36:06,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-12-13 19:36:06,717 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:36:06,717 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:06,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 19:36:06,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 19:36:06,919 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:36:06,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:36:06,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1721923009, now seen corresponding path program 1 times [2022-12-13 19:36:06,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:36:06,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449618133] [2022-12-13 19:36:06,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:36:06,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:36:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:07,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:36:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:07,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:36:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:07,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:36:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:07,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:36:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:07,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:36:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:07,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:36:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:07,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:36:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:07,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:36:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:07,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:36:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:07,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:36:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:07,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:36:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:07,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:36:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:07,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:36:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:07,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:36:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:07,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:36:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:08,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:36:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:08,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 19:36:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:08,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:36:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:08,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 19:36:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:08,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 19:36:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:08,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:36:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:08,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 19:36:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:08,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 19:36:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:08,082 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 10 proven. 39 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-12-13 19:36:08,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:36:08,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449618133] [2022-12-13 19:36:08,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449618133] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:36:08,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658728030] [2022-12-13 19:36:08,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:36:08,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:36:08,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:36:08,083 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:36:08,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 19:36:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:08,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 1882 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 19:36:08,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:36:08,542 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 69 proven. 6 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-13 19:36:08,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:36:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-12-13 19:36:09,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658728030] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:36:09,055 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:36:09,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9, 8] total 37 [2022-12-13 19:36:09,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851004757] [2022-12-13 19:36:09,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:36:09,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-13 19:36:09,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:36:09,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-13 19:36:09,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1215, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 19:36:09,058 INFO L87 Difference]: Start difference. First operand 4373 states and 6900 transitions. Second operand has 37 states, 37 states have (on average 7.594594594594595) internal successors, (281), 28 states have internal predecessors, (281), 13 states have call successors, (57), 9 states have call predecessors, (57), 18 states have return successors, (57), 18 states have call predecessors, (57), 13 states have call successors, (57) [2022-12-13 19:38:35,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:38:35,745 INFO L93 Difference]: Finished difference Result 65830 states and 120069 transitions. [2022-12-13 19:38:35,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 271 states. [2022-12-13 19:38:35,746 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 7.594594594594595) internal successors, (281), 28 states have internal predecessors, (281), 13 states have call successors, (57), 9 states have call predecessors, (57), 18 states have return successors, (57), 18 states have call predecessors, (57), 13 states have call successors, (57) Word has length 202 [2022-12-13 19:38:35,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:38:36,115 INFO L225 Difference]: With dead ends: 65830 [2022-12-13 19:38:36,115 INFO L226 Difference]: Without dead ends: 61535 [2022-12-13 19:38:36,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 488 SyntacticMatches, 2 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37314 ImplicationChecksByTransitivity, 33.4s TimeCoverageRelationStatistics Valid=7821, Invalid=85509, Unknown=0, NotChecked=0, Total=93330 [2022-12-13 19:38:36,236 INFO L413 NwaCegarLoop]: 2961 mSDtfsCounter, 43524 mSDsluCounter, 41276 mSDsCounter, 0 mSdLazyCounter, 135151 mSolverCounterSat, 31308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43524 SdHoareTripleChecker+Valid, 44237 SdHoareTripleChecker+Invalid, 166459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.2s SdHoareTripleChecker+Time, 31308 IncrementalHoareTripleChecker+Valid, 135151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:38:36,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43524 Valid, 44237 Invalid, 166459 Unknown, 0 Unchecked, 1.2s Time], IncrementalHoareTripleChecker [31308 Valid, 135151 Invalid, 0 Unknown, 0 Unchecked, 84.3s Time] [2022-12-13 19:38:36,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61535 states. [2022-12-13 19:38:50,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61535 to 41197. [2022-12-13 19:38:50,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41197 states, 30000 states have (on average 1.5346666666666666) internal successors, (46040), 31317 states have internal predecessors, (46040), 9222 states have call successors, (9222), 1455 states have call predecessors, (9222), 1974 states have return successors, (11998), 9112 states have call predecessors, (11998), 9217 states have call successors, (11998) [2022-12-13 19:38:50,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41197 states to 41197 states and 67260 transitions. [2022-12-13 19:38:50,958 INFO L78 Accepts]: Start accepts. Automaton has 41197 states and 67260 transitions. Word has length 202 [2022-12-13 19:38:50,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:38:50,959 INFO L495 AbstractCegarLoop]: Abstraction has 41197 states and 67260 transitions. [2022-12-13 19:38:50,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 7.594594594594595) internal successors, (281), 28 states have internal predecessors, (281), 13 states have call successors, (57), 9 states have call predecessors, (57), 18 states have return successors, (57), 18 states have call predecessors, (57), 13 states have call successors, (57) [2022-12-13 19:38:50,959 INFO L276 IsEmpty]: Start isEmpty. Operand 41197 states and 67260 transitions. [2022-12-13 19:38:50,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-12-13 19:38:50,977 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:38:50,977 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:38:50,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 19:38:51,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 19:38:51,179 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:38:51,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:38:51,180 INFO L85 PathProgramCache]: Analyzing trace with hash -27734419, now seen corresponding path program 1 times [2022-12-13 19:38:51,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:38:51,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884582836] [2022-12-13 19:38:51,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:38:51,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:38:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:38:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:38:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:38:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:38:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:38:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:38:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:38:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:38:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:38:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:38:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:38:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:38:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:38:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:38:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:38:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:38:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 19:38:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:38:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 19:38:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 19:38:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:38:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 19:38:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 19:38:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:51,671 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-12-13 19:38:51,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:38:51,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884582836] [2022-12-13 19:38:51,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884582836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:38:51,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:38:51,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 19:38:51,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316935560] [2022-12-13 19:38:51,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:38:51,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:38:51,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:38:51,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:38:51,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:38:51,672 INFO L87 Difference]: Start difference. First operand 41197 states and 67260 transitions. Second operand has 11 states, 10 states have (on average 12.0) internal successors, (120), 6 states have internal predecessors, (120), 3 states have call successors, (23), 6 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-13 19:39:16,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:39:16,790 INFO L93 Difference]: Finished difference Result 78188 states and 131130 transitions. [2022-12-13 19:39:16,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 19:39:16,791 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.0) internal successors, (120), 6 states have internal predecessors, (120), 3 states have call successors, (23), 6 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 202 [2022-12-13 19:39:16,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:39:17,036 INFO L225 Difference]: With dead ends: 78188 [2022-12-13 19:39:17,036 INFO L226 Difference]: Without dead ends: 51382 [2022-12-13 19:39:17,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-12-13 19:39:17,132 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 1103 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 6048 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 3285 SdHoareTripleChecker+Invalid, 6313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 6048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-12-13 19:39:17,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 3285 Invalid, 6313 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [265 Valid, 6048 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-12-13 19:39:17,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51382 states. [2022-12-13 19:39:31,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51382 to 41164. [2022-12-13 19:39:31,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41164 states, 29967 states have (on average 1.5350552274168252) internal successors, (46001), 31284 states have internal predecessors, (46001), 9222 states have call successors, (9222), 1455 states have call predecessors, (9222), 1974 states have return successors, (11998), 9112 states have call predecessors, (11998), 9217 states have call successors, (11998) [2022-12-13 19:39:31,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41164 states to 41164 states and 67221 transitions. [2022-12-13 19:39:31,656 INFO L78 Accepts]: Start accepts. Automaton has 41164 states and 67221 transitions. Word has length 202 [2022-12-13 19:39:31,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:39:31,656 INFO L495 AbstractCegarLoop]: Abstraction has 41164 states and 67221 transitions. [2022-12-13 19:39:31,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.0) internal successors, (120), 6 states have internal predecessors, (120), 3 states have call successors, (23), 6 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-13 19:39:31,656 INFO L276 IsEmpty]: Start isEmpty. Operand 41164 states and 67221 transitions. [2022-12-13 19:39:31,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-12-13 19:39:31,677 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:39:31,678 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:39:31,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 19:39:31,678 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:39:31,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:39:31,678 INFO L85 PathProgramCache]: Analyzing trace with hash 2113688819, now seen corresponding path program 1 times [2022-12-13 19:39:31,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:39:31,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668873041] [2022-12-13 19:39:31,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:31,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:39:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:31,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:39:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:31,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:39:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:31,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:39:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:31,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 19:39:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:32,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:39:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:32,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:39:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:32,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:39:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:32,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:39:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:32,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:39:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:32,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:39:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:32,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:39:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:32,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:39:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:32,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:39:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:32,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:39:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:32,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:39:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:32,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:39:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:32,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 19:39:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:32,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:39:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:32,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 19:39:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:32,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 19:39:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:32,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:39:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:32,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 19:39:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:32,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 19:39:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:32,184 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-12-13 19:39:32,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:39:32,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668873041] [2022-12-13 19:39:32,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668873041] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:39:32,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:39:32,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 19:39:32,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159916094] [2022-12-13 19:39:32,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:39:32,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:39:32,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:39:32,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:39:32,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:39:32,185 INFO L87 Difference]: Start difference. First operand 41164 states and 67221 transitions. Second operand has 11 states, 10 states have (on average 12.3) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (23), 6 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-13 19:39:50,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:39:50,018 INFO L93 Difference]: Finished difference Result 57766 states and 95891 transitions. [2022-12-13 19:39:50,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:39:50,019 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.3) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (23), 6 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 205 [2022-12-13 19:39:50,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:39:50,142 INFO L225 Difference]: With dead ends: 57766 [2022-12-13 19:39:50,142 INFO L226 Difference]: Without dead ends: 31002 [2022-12-13 19:39:50,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-12-13 19:39:50,214 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1396 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 5493 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 5889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 5493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-12-13 19:39:50,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 3084 Invalid, 5889 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [396 Valid, 5493 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-12-13 19:39:50,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31002 states. [2022-12-13 19:39:58,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31002 to 25369. [2022-12-13 19:39:58,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25369 states, 18458 states have (on average 1.5411203814064363) internal successors, (28446), 19309 states have internal predecessors, (28446), 5642 states have call successors, (5642), 957 states have call predecessors, (5642), 1268 states have return successors, (7126), 5534 states have call predecessors, (7126), 5637 states have call successors, (7126) [2022-12-13 19:39:58,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25369 states to 25369 states and 41214 transitions. [2022-12-13 19:39:58,840 INFO L78 Accepts]: Start accepts. Automaton has 25369 states and 41214 transitions. Word has length 205 [2022-12-13 19:39:58,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:39:58,840 INFO L495 AbstractCegarLoop]: Abstraction has 25369 states and 41214 transitions. [2022-12-13 19:39:58,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.3) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (23), 6 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-13 19:39:58,840 INFO L276 IsEmpty]: Start isEmpty. Operand 25369 states and 41214 transitions. [2022-12-13 19:39:58,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-12-13 19:39:58,847 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:39:58,847 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:39:58,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 19:39:58,847 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:39:58,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:39:58,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1359643537, now seen corresponding path program 1 times [2022-12-13 19:39:58,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:39:58,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213564121] [2022-12-13 19:39:58,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:58,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:39:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:39:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:39:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:39:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:39:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:39:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:39:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:39:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:39:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:39:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:39:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:39:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 19:39:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 19:39:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:39:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 19:39:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 19:39:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 19:39:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 19:39:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 19:39:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 19:39:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 19:39:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:39:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:39:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:39:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:39:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:39:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:39:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:39:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:39:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:39:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:39:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:39:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 19:39:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 19:39:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,515 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-12-13 19:39:59,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:39:59,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213564121] [2022-12-13 19:39:59,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213564121] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:39:59,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128462196] [2022-12-13 19:39:59,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:59,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:39:59,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:39:59,517 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:39:59,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 19:39:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 2572 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:39:59,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:39:59,831 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-12-13 19:39:59,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:39:59,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128462196] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:39:59,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:39:59,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-12-13 19:39:59,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278178892] [2022-12-13 19:39:59,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:39:59,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:39:59,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:39:59,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:39:59,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-12-13 19:39:59,833 INFO L87 Difference]: Start difference. First operand 25369 states and 41214 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2022-12-13 19:40:13,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:40:13,687 INFO L93 Difference]: Finished difference Result 65938 states and 108396 transitions. [2022-12-13 19:40:13,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:40:13,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 280 [2022-12-13 19:40:13,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:40:13,851 INFO L225 Difference]: With dead ends: 65938 [2022-12-13 19:40:13,851 INFO L226 Difference]: Without dead ends: 40611 [2022-12-13 19:40:13,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-12-13 19:40:13,934 INFO L413 NwaCegarLoop]: 1116 mSDtfsCounter, 887 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 1974 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:40:13,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 1974 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:40:13,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40611 states. [2022-12-13 19:40:27,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40611 to 40609. [2022-12-13 19:40:27,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40609 states, 29425 states have (on average 1.5332200509770604) internal successors, (45115), 30844 states have internal predecessors, (45115), 9154 states have call successors, (9154), 1525 states have call predecessors, (9154), 2029 states have return successors, (12337), 9103 states have call predecessors, (12337), 9149 states have call successors, (12337) [2022-12-13 19:40:27,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40609 states to 40609 states and 66606 transitions. [2022-12-13 19:40:27,877 INFO L78 Accepts]: Start accepts. Automaton has 40609 states and 66606 transitions. Word has length 280 [2022-12-13 19:40:27,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:40:27,878 INFO L495 AbstractCegarLoop]: Abstraction has 40609 states and 66606 transitions. [2022-12-13 19:40:27,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2022-12-13 19:40:27,878 INFO L276 IsEmpty]: Start isEmpty. Operand 40609 states and 66606 transitions. [2022-12-13 19:40:27,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2022-12-13 19:40:27,887 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:40:27,887 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:40:27,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 19:40:28,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:40:28,089 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:40:28,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:40:28,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1641934146, now seen corresponding path program 1 times [2022-12-13 19:40:28,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:40:28,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941288827] [2022-12-13 19:40:28,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:40:28,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:40:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:40:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:40:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:40:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:40:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:40:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:40:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:40:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:40:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:40:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:40:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:40:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 19:40:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 19:40:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:40:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 19:40:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 19:40:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 19:40:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 19:40:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 19:40:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 19:40:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 19:40:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:40:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:40:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:40:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:40:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:40:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:40:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 19:40:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 19:40:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:40:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 19:40:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 19:40:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 19:40:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:40:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 19:40:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 19:40:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 19:40:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 19:40:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 19:40:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-12-13 19:40:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:28,932 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2022-12-13 19:40:28,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:40:28,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941288827] [2022-12-13 19:40:28,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941288827] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:40:28,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151599986] [2022-12-13 19:40:28,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:40:28,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:40:28,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:40:28,933 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:40:28,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 19:40:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:29,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 2979 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:40:29,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:40:29,222 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-12-13 19:40:29,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:40:29,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151599986] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:40:29,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:40:29,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-12-13 19:40:29,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154346284] [2022-12-13 19:40:29,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:40:29,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:40:29,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:40:29,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:40:29,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:40:29,224 INFO L87 Difference]: Start difference. First operand 40609 states and 66606 transitions. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-12-13 19:40:43,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:40:43,847 INFO L93 Difference]: Finished difference Result 82572 states and 138080 transitions. [2022-12-13 19:40:43,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:40:43,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 337 [2022-12-13 19:40:43,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:40:44,036 INFO L225 Difference]: With dead ends: 82572 [2022-12-13 19:40:44,036 INFO L226 Difference]: Without dead ends: 42013 [2022-12-13 19:40:44,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:40:44,230 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 213 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:40:44,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 2499 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:40:44,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42013 states. [2022-12-13 19:40:57,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42013 to 42013. [2022-12-13 19:40:57,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42013 states, 30793 states have (on average 1.550449777546845) internal successors, (47743), 32212 states have internal predecessors, (47743), 9154 states have call successors, (9154), 1561 states have call predecessors, (9154), 2065 states have return successors, (12337), 9103 states have call predecessors, (12337), 9149 states have call successors, (12337) [2022-12-13 19:40:58,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42013 states to 42013 states and 69234 transitions. [2022-12-13 19:40:58,171 INFO L78 Accepts]: Start accepts. Automaton has 42013 states and 69234 transitions. Word has length 337 [2022-12-13 19:40:58,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:40:58,172 INFO L495 AbstractCegarLoop]: Abstraction has 42013 states and 69234 transitions. [2022-12-13 19:40:58,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-12-13 19:40:58,172 INFO L276 IsEmpty]: Start isEmpty. Operand 42013 states and 69234 transitions. [2022-12-13 19:40:58,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-12-13 19:40:58,181 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:40:58,181 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:40:58,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 19:40:58,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:40:58,384 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:40:58,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:40:58,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1096899159, now seen corresponding path program 1 times [2022-12-13 19:40:58,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:40:58,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448799431] [2022-12-13 19:40:58,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:40:58,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:40:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:58,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:40:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:58,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:40:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:58,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:40:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:58,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:40:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:58,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:40:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:58,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:40:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:40:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:40:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:40:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:40:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:40:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 19:40:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:40:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 19:40:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 19:40:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 19:40:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 19:40:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 19:40:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 19:40:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 19:40:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 19:40:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:40:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:40:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:40:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:40:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:40:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:40:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 19:40:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:40:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:40:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 19:40:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 19:40:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 19:40:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:40:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 19:40:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 19:40:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 19:40:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 19:40:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 19:40:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 19:40:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,177 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2022-12-13 19:40:59,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:40:59,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448799431] [2022-12-13 19:40:59,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448799431] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:40:59,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278687652] [2022-12-13 19:40:59,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:40:59,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:40:59,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:40:59,178 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:40:59,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 19:40:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:59,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 2988 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:40:59,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:40:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-12-13 19:40:59,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:40:59,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278687652] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:40:59,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:40:59,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-12-13 19:40:59,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929184311] [2022-12-13 19:40:59,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:40:59,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:40:59,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:40:59,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:40:59,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:40:59,505 INFO L87 Difference]: Start difference. First operand 42013 states and 69234 transitions. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-12-13 19:41:13,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:41:13,722 INFO L93 Difference]: Finished difference Result 85380 states and 143144 transitions. [2022-12-13 19:41:13,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:41:13,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 346 [2022-12-13 19:41:13,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:41:13,904 INFO L225 Difference]: With dead ends: 85380 [2022-12-13 19:41:13,905 INFO L226 Difference]: Without dead ends: 43417 [2022-12-13 19:41:14,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:41:14,052 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 211 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:41:14,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 2499 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:41:14,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43417 states. [2022-12-13 19:41:27,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43417 to 43417. [2022-12-13 19:41:27,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43417 states, 32161 states have (on average 1.5662137371350393) internal successors, (50371), 33580 states have internal predecessors, (50371), 9154 states have call successors, (9154), 1597 states have call predecessors, (9154), 2101 states have return successors, (12337), 9103 states have call predecessors, (12337), 9149 states have call successors, (12337) [2022-12-13 19:41:28,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43417 states to 43417 states and 71862 transitions. [2022-12-13 19:41:28,083 INFO L78 Accepts]: Start accepts. Automaton has 43417 states and 71862 transitions. Word has length 346 [2022-12-13 19:41:28,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:41:28,084 INFO L495 AbstractCegarLoop]: Abstraction has 43417 states and 71862 transitions. [2022-12-13 19:41:28,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-12-13 19:41:28,084 INFO L276 IsEmpty]: Start isEmpty. Operand 43417 states and 71862 transitions. [2022-12-13 19:41:28,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-12-13 19:41:28,094 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:41:28,095 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 8, 8, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:41:28,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 19:41:28,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:41:28,297 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:41:28,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:28,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1464072344, now seen corresponding path program 1 times [2022-12-13 19:41:28,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:41:28,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141873432] [2022-12-13 19:41:28,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:28,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:41:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:28,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:41:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:28,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:41:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:28,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:41:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:28,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:41:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:28,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:41:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:28,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:41:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:28,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:41:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:41:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:41:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:41:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:41:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 19:41:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:41:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 19:41:29,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 19:41:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 19:41:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 19:41:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 19:41:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 19:41:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 19:41:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-12-13 19:41:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:41:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:41:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:41:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:41:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:41:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:41:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 19:41:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:41:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:41:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 19:41:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 19:41:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 19:41:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:41:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 19:41:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:41:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 19:41:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 19:41:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 19:41:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-12-13 19:41:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2022-12-13 19:41:29,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:41:29,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141873432] [2022-12-13 19:41:29,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141873432] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:41:29,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960662661] [2022-12-13 19:41:29,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:29,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:41:29,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:29,130 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:41:29,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 19:41:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:29,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 2997 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:41:29,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:29,409 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-12-13 19:41:29,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:41:29,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960662661] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:41:29,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:41:29,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-12-13 19:41:29,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119144599] [2022-12-13 19:41:29,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:41:29,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:41:29,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:41:29,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:41:29,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:41:29,411 INFO L87 Difference]: Start difference. First operand 43417 states and 71862 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-12-13 19:41:43,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:41:43,743 INFO L93 Difference]: Finished difference Result 88188 states and 148208 transitions. [2022-12-13 19:41:43,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:41:43,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 355 [2022-12-13 19:41:43,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:41:43,924 INFO L225 Difference]: With dead ends: 88188 [2022-12-13 19:41:43,925 INFO L226 Difference]: Without dead ends: 44821 [2022-12-13 19:41:44,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:41:44,071 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 209 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:41:44,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 2499 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:41:44,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44821 states. [2022-12-13 19:41:57,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44821 to 44821. [2022-12-13 19:41:57,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44821 states, 33529 states have (on average 1.580691341823496) internal successors, (52999), 34948 states have internal predecessors, (52999), 9154 states have call successors, (9154), 1633 states have call predecessors, (9154), 2137 states have return successors, (12337), 9103 states have call predecessors, (12337), 9149 states have call successors, (12337) [2022-12-13 19:41:58,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44821 states to 44821 states and 74490 transitions. [2022-12-13 19:41:58,210 INFO L78 Accepts]: Start accepts. Automaton has 44821 states and 74490 transitions. Word has length 355 [2022-12-13 19:41:58,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:41:58,210 INFO L495 AbstractCegarLoop]: Abstraction has 44821 states and 74490 transitions. [2022-12-13 19:41:58,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-12-13 19:41:58,211 INFO L276 IsEmpty]: Start isEmpty. Operand 44821 states and 74490 transitions. [2022-12-13 19:41:58,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-12-13 19:41:58,223 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:41:58,223 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 8, 6, 6, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:41:58,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 19:41:58,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-12-13 19:41:58,425 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:41:58,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:58,426 INFO L85 PathProgramCache]: Analyzing trace with hash -194289214, now seen corresponding path program 1 times [2022-12-13 19:41:58,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:41:58,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851168457] [2022-12-13 19:41:58,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:58,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:41:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:58,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:41:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:58,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:41:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:58,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:41:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:58,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:41:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:58,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:41:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:41:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:41:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:41:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:41:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:41:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:41:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 19:41:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:41:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 19:41:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:41:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 19:41:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 19:41:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 19:41:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 19:41:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-12-13 19:41:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 19:41:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:41:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:41:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:41:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:41:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:41:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:41:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 19:41:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:41:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:41:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 19:41:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 19:41:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 19:41:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:41:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 19:41:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:41:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 19:41:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 19:41:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 19:41:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-12-13 19:41:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,324 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2022-12-13 19:41:59,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:41:59,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851168457] [2022-12-13 19:41:59,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851168457] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:41:59,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838976515] [2022-12-13 19:41:59,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:59,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:41:59,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:59,325 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:41:59,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 19:41:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 3003 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:41:59,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:59,627 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-12-13 19:41:59,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:41:59,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838976515] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:41:59,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:41:59,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-12-13 19:41:59,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196796373] [2022-12-13 19:41:59,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:41:59,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:41:59,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:41:59,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:41:59,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:41:59,629 INFO L87 Difference]: Start difference. First operand 44821 states and 74490 transitions. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-12-13 19:42:13,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:42:13,944 INFO L93 Difference]: Finished difference Result 90996 states and 153272 transitions. [2022-12-13 19:42:13,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:42:13,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 361 [2022-12-13 19:42:13,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:42:14,133 INFO L225 Difference]: With dead ends: 90996 [2022-12-13 19:42:14,133 INFO L226 Difference]: Without dead ends: 46225 [2022-12-13 19:42:14,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:42:14,276 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 207 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:42:14,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 2499 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:42:14,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46225 states. [2022-12-13 19:42:28,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46225 to 46225. [2022-12-13 19:42:28,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46225 states, 34897 states have (on average 1.5940338711063988) internal successors, (55627), 36316 states have internal predecessors, (55627), 9154 states have call successors, (9154), 1669 states have call predecessors, (9154), 2173 states have return successors, (12337), 9103 states have call predecessors, (12337), 9149 states have call successors, (12337) [2022-12-13 19:42:28,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46225 states to 46225 states and 77118 transitions. [2022-12-13 19:42:28,376 INFO L78 Accepts]: Start accepts. Automaton has 46225 states and 77118 transitions. Word has length 361 [2022-12-13 19:42:28,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:42:28,376 INFO L495 AbstractCegarLoop]: Abstraction has 46225 states and 77118 transitions. [2022-12-13 19:42:28,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-12-13 19:42:28,376 INFO L276 IsEmpty]: Start isEmpty. Operand 46225 states and 77118 transitions. [2022-12-13 19:42:28,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2022-12-13 19:42:28,388 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:42:28,388 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 8, 6, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:28,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 19:42:28,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-13 19:42:28,590 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:42:28,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:42:28,591 INFO L85 PathProgramCache]: Analyzing trace with hash -2029528990, now seen corresponding path program 1 times [2022-12-13 19:42:28,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:42:28,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527600291] [2022-12-13 19:42:28,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:42:28,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:42:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:28,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:42:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:42:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:42:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:42:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:42:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:42:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:42:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:42:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:42:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:42:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:42:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 19:42:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:42:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 19:42:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:42:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 19:42:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 19:42:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 19:42:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 19:42:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 19:42:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 19:42:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:42:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:42:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:42:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:42:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:42:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:42:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 19:42:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:42:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:42:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 19:42:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 19:42:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 19:42:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:42:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 19:42:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:42:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 19:42:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 19:42:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 19:42:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 19:42:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,482 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2022-12-13 19:42:29,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:42:29,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527600291] [2022-12-13 19:42:29,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527600291] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:42:29,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147787112] [2022-12-13 19:42:29,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:42:29,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:42:29,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:42:29,483 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:42:29,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 19:42:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:29,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 3007 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:42:29,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:42:29,759 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 331 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-12-13 19:42:29,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:42:29,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147787112] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:42:29,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:42:29,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-12-13 19:42:29,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855906789] [2022-12-13 19:42:29,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:42:29,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:42:29,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:42:29,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:42:29,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:42:29,761 INFO L87 Difference]: Start difference. First operand 46225 states and 77118 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-12-13 19:42:44,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:42:44,033 INFO L93 Difference]: Finished difference Result 93804 states and 158336 transitions. [2022-12-13 19:42:44,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:42:44,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 365 [2022-12-13 19:42:44,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:42:44,237 INFO L225 Difference]: With dead ends: 93804 [2022-12-13 19:42:44,237 INFO L226 Difference]: Without dead ends: 47629 [2022-12-13 19:42:44,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:42:44,382 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 205 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:42:44,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 2499 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:42:44,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47629 states. [2022-12-13 19:42:58,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47629 to 47629. [2022-12-13 19:42:58,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47629 states, 36265 states have (on average 1.6063697780228872) internal successors, (58255), 37684 states have internal predecessors, (58255), 9154 states have call successors, (9154), 1705 states have call predecessors, (9154), 2209 states have return successors, (12337), 9103 states have call predecessors, (12337), 9149 states have call successors, (12337) [2022-12-13 19:42:58,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47629 states to 47629 states and 79746 transitions. [2022-12-13 19:42:58,553 INFO L78 Accepts]: Start accepts. Automaton has 47629 states and 79746 transitions. Word has length 365 [2022-12-13 19:42:58,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:42:58,553 INFO L495 AbstractCegarLoop]: Abstraction has 47629 states and 79746 transitions. [2022-12-13 19:42:58,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-12-13 19:42:58,553 INFO L276 IsEmpty]: Start isEmpty. Operand 47629 states and 79746 transitions. [2022-12-13 19:42:58,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2022-12-13 19:42:58,565 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:42:58,565 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 8, 6, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:58,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 19:42:58,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-12-13 19:42:58,767 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:42:58,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:42:58,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1434301564, now seen corresponding path program 1 times [2022-12-13 19:42:58,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:42:58,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007384899] [2022-12-13 19:42:58,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:42:58,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:42:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:42:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:42:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:42:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:42:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:42:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:42:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:42:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:42:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:42:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:42:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:42:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 19:42:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:42:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 19:42:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:42:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 19:42:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 19:42:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 19:42:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 19:42:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 19:42:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 19:42:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:42:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:42:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:42:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:42:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:42:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:42:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 19:42:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:42:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:42:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 19:42:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 19:42:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 19:42:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:42:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 19:42:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:42:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 19:42:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 19:42:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 19:42:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 19:42:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:59,772 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2022-12-13 19:42:59,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:42:59,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007384899] [2022-12-13 19:42:59,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007384899] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:42:59,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383673599] [2022-12-13 19:42:59,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:42:59,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:42:59,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:42:59,773 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:42:59,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 19:43:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:00,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 3001 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:43:00,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:43:00,057 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-12-13 19:43:00,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:43:00,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383673599] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:43:00,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:43:00,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-12-13 19:43:00,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702311721] [2022-12-13 19:43:00,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:43:00,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:43:00,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:43:00,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:43:00,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:43:00,059 INFO L87 Difference]: Start difference. First operand 47629 states and 79746 transitions. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-12-13 19:43:14,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:43:14,456 INFO L93 Difference]: Finished difference Result 85356 states and 144880 transitions. [2022-12-13 19:43:14,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:43:14,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 365 [2022-12-13 19:43:14,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:43:14,668 INFO L225 Difference]: With dead ends: 85356 [2022-12-13 19:43:14,668 INFO L226 Difference]: Without dead ends: 49069 [2022-12-13 19:43:14,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:43:14,796 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 210 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:43:14,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 2499 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:43:14,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49069 states. [2022-12-13 19:43:28,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49069 to 49069. [2022-12-13 19:43:28,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49069 states, 37615 states have (on average 1.6181044795959059) internal successors, (60865), 39034 states have internal predecessors, (60865), 9190 states have call successors, (9190), 1741 states have call predecessors, (9190), 2263 states have return successors, (12391), 9157 states have call predecessors, (12391), 9185 states have call successors, (12391) [2022-12-13 19:43:29,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49069 states to 49069 states and 82446 transitions. [2022-12-13 19:43:29,078 INFO L78 Accepts]: Start accepts. Automaton has 49069 states and 82446 transitions. Word has length 365 [2022-12-13 19:43:29,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:43:29,079 INFO L495 AbstractCegarLoop]: Abstraction has 49069 states and 82446 transitions. [2022-12-13 19:43:29,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-12-13 19:43:29,079 INFO L276 IsEmpty]: Start isEmpty. Operand 49069 states and 82446 transitions. [2022-12-13 19:43:29,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-12-13 19:43:29,091 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:43:29,091 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 8, 6, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:43:29,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 19:43:29,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-12-13 19:43:29,292 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:43:29,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:43:29,292 INFO L85 PathProgramCache]: Analyzing trace with hash 585286741, now seen corresponding path program 1 times [2022-12-13 19:43:29,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:43:29,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069482702] [2022-12-13 19:43:29,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:43:29,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:43:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:29,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:43:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:29,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:43:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:29,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:43:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:29,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:43:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:29,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:43:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:29,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:43:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:43:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:43:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:43:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:43:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:43:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 19:43:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:43:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 19:43:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:43:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 19:43:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 19:43:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 19:43:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 19:43:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 19:43:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 19:43:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:43:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:43:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:43:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:43:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:43:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:43:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 19:43:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:43:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 19:43:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:43:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 19:43:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:43:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 19:43:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:43:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 19:43:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 19:43:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:43:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 19:43:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 19:43:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,186 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2022-12-13 19:43:30,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:43:30,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069482702] [2022-12-13 19:43:30,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069482702] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:43:30,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381125637] [2022-12-13 19:43:30,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:43:30,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:43:30,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:43:30,187 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:43:30,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 19:43:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:30,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 3002 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:43:30,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:43:30,476 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2022-12-13 19:43:30,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:43:30,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381125637] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:43:30,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:43:30,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-12-13 19:43:30,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926315977] [2022-12-13 19:43:30,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:43:30,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:43:30,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:43:30,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:43:30,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:43:30,479 INFO L87 Difference]: Start difference. First operand 49069 states and 82446 transitions. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-12-13 19:43:45,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:43:45,407 INFO L93 Difference]: Finished difference Result 87708 states and 149108 transitions. [2022-12-13 19:43:45,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:43:45,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 366 [2022-12-13 19:43:45,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:43:45,639 INFO L225 Difference]: With dead ends: 87708 [2022-12-13 19:43:45,639 INFO L226 Difference]: Without dead ends: 50509 [2022-12-13 19:43:45,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:43:45,771 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 208 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:43:45,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 2499 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:43:45,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50509 states. [2022-12-13 19:44:00,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50509 to 50509. [2022-12-13 19:44:00,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50509 states, 38965 states have (on average 1.62902604901835) internal successors, (63475), 40384 states have internal predecessors, (63475), 9226 states have call successors, (9226), 1777 states have call predecessors, (9226), 2317 states have return successors, (12445), 9211 states have call predecessors, (12445), 9221 states have call successors, (12445) [2022-12-13 19:44:00,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50509 states to 50509 states and 85146 transitions. [2022-12-13 19:44:00,394 INFO L78 Accepts]: Start accepts. Automaton has 50509 states and 85146 transitions. Word has length 366 [2022-12-13 19:44:00,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:44:00,395 INFO L495 AbstractCegarLoop]: Abstraction has 50509 states and 85146 transitions. [2022-12-13 19:44:00,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-12-13 19:44:00,395 INFO L276 IsEmpty]: Start isEmpty. Operand 50509 states and 85146 transitions. [2022-12-13 19:44:00,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-12-13 19:44:00,407 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:44:00,407 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 8, 6, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:44:00,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 19:44:00,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-12-13 19:44:00,609 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:44:00,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:44:00,611 INFO L85 PathProgramCache]: Analyzing trace with hash 533577625, now seen corresponding path program 1 times [2022-12-13 19:44:00,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:44:00,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311545832] [2022-12-13 19:44:00,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:44:00,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:44:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:00,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:44:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:00,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:44:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:00,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:44:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:44:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:44:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:44:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:44:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:44:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:44:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:44:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:44:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 19:44:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:44:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 19:44:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:44:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 19:44:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 19:44:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 19:44:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 19:44:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 19:44:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 19:44:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:44:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:44:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:44:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:44:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:44:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:44:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 19:44:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:44:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 19:44:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:44:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 19:44:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 19:44:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 19:44:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 19:44:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 19:44:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 19:44:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:44:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 19:44:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-12-13 19:44:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,601 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2022-12-13 19:44:01,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:44:01,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311545832] [2022-12-13 19:44:01,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311545832] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:44:01,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699584406] [2022-12-13 19:44:01,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:44:01,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:44:01,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:44:01,603 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:44:01,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 19:44:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:01,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 3003 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:44:01,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:44:01,916 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2022-12-13 19:44:01,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:44:01,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699584406] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:44:01,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:44:01,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-12-13 19:44:01,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226690171] [2022-12-13 19:44:01,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:44:01,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:44:01,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:44:01,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:44:01,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:44:01,918 INFO L87 Difference]: Start difference. First operand 50509 states and 85146 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-13 19:44:16,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:44:16,357 INFO L93 Difference]: Finished difference Result 90060 states and 153336 transitions. [2022-12-13 19:44:16,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:44:16,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 367 [2022-12-13 19:44:16,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:44:16,578 INFO L225 Difference]: With dead ends: 90060 [2022-12-13 19:44:16,578 INFO L226 Difference]: Without dead ends: 51949 [2022-12-13 19:44:16,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:44:16,712 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 206 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:44:16,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 2499 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:44:16,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51949 states. [2022-12-13 19:44:30,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51949 to 51949. [2022-12-13 19:44:30,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51949 states, 40315 states have (on average 1.6392161726404564) internal successors, (66085), 41734 states have internal predecessors, (66085), 9262 states have call successors, (9262), 1813 states have call predecessors, (9262), 2371 states have return successors, (12499), 9265 states have call predecessors, (12499), 9257 states have call successors, (12499) [2022-12-13 19:44:31,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51949 states to 51949 states and 87846 transitions. [2022-12-13 19:44:31,155 INFO L78 Accepts]: Start accepts. Automaton has 51949 states and 87846 transitions. Word has length 367 [2022-12-13 19:44:31,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:44:31,156 INFO L495 AbstractCegarLoop]: Abstraction has 51949 states and 87846 transitions. [2022-12-13 19:44:31,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-13 19:44:31,156 INFO L276 IsEmpty]: Start isEmpty. Operand 51949 states and 87846 transitions. [2022-12-13 19:44:31,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-12-13 19:44:31,168 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:44:31,168 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 8, 6, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:44:31,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 19:44:31,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:44:31,370 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:44:31,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:44:31,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1700421142, now seen corresponding path program 1 times [2022-12-13 19:44:31,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:44:31,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450487136] [2022-12-13 19:44:31,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:44:31,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:44:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:31,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:44:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:31,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:44:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:31,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:44:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:31,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:44:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:31,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:44:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:44:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:44:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:44:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:44:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:44:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:44:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 19:44:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:44:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 19:44:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:44:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 19:44:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 19:44:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 19:44:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 19:44:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 19:44:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 19:44:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:44:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:44:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:44:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:44:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:44:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:44:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 19:44:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:44:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 19:44:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:44:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 19:44:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 19:44:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:44:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 19:44:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 19:44:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 19:44:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:44:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 19:44:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-12-13 19:44:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,304 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2022-12-13 19:44:32,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:44:32,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450487136] [2022-12-13 19:44:32,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450487136] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:44:32,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237421270] [2022-12-13 19:44:32,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:44:32,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:44:32,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:44:32,305 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:44:32,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 19:44:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:32,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 3003 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:44:32,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:44:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2022-12-13 19:44:32,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:44:32,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237421270] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:44:32,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:44:32,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-12-13 19:44:32,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947669962] [2022-12-13 19:44:32,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:44:32,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:44:32,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:44:32,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:44:32,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:44:32,733 INFO L87 Difference]: Start difference. First operand 51949 states and 87846 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-13 19:44:48,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:44:48,081 INFO L93 Difference]: Finished difference Result 92412 states and 157564 transitions. [2022-12-13 19:44:48,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:44:48,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 367 [2022-12-13 19:44:48,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:44:48,305 INFO L225 Difference]: With dead ends: 92412 [2022-12-13 19:44:48,305 INFO L226 Difference]: Without dead ends: 53389 [2022-12-13 19:44:48,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:44:48,428 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 204 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:44:48,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 2499 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:44:48,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53389 states. [2022-12-13 19:45:03,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53389 to 53389. [2022-12-13 19:45:03,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53389 states, 41665 states have (on average 1.6487459498379935) internal successors, (68695), 43084 states have internal predecessors, (68695), 9298 states have call successors, (9298), 1849 states have call predecessors, (9298), 2425 states have return successors, (12553), 9319 states have call predecessors, (12553), 9293 states have call successors, (12553) [2022-12-13 19:45:04,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53389 states to 53389 states and 90546 transitions. [2022-12-13 19:45:04,080 INFO L78 Accepts]: Start accepts. Automaton has 53389 states and 90546 transitions. Word has length 367 [2022-12-13 19:45:04,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:04,080 INFO L495 AbstractCegarLoop]: Abstraction has 53389 states and 90546 transitions. [2022-12-13 19:45:04,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-13 19:45:04,080 INFO L276 IsEmpty]: Start isEmpty. Operand 53389 states and 90546 transitions. [2022-12-13 19:45:04,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-12-13 19:45:04,092 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:04,093 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 8, 6, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:45:04,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 19:45:04,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-12-13 19:45:04,297 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:04,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:04,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1235140222, now seen corresponding path program 1 times [2022-12-13 19:45:04,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:04,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414482809] [2022-12-13 19:45:04,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:04,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:04,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:45:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:04,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:04,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:45:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:04,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:45:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:04,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:04,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:45:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:45:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:45:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 19:45:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:45:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 19:45:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:45:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 19:45:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 19:45:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 19:45:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 19:45:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 19:45:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 19:45:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:45:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:45:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:45:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 19:45:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:45:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 19:45:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:45:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 19:45:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 19:45:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:45:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 19:45:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 19:45:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 19:45:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:45:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 19:45:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-12-13 19:45:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,212 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2022-12-13 19:45:05,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:05,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414482809] [2022-12-13 19:45:05,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414482809] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:05,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31627293] [2022-12-13 19:45:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:05,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:05,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:05,214 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:05,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6a51de-74ea-44d4-ac63-ecb956390046/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 19:45:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:05,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 3000 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 19:45:05,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:05,826 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 55 proven. 3 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-12-13 19:45:05,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:45:06,855 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 23 proven. 21 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2022-12-13 19:45:06,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31627293] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:45:06,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:45:06,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 10] total 27 [2022-12-13 19:45:06,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361476841] [2022-12-13 19:45:06,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:45:06,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 19:45:06,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:06,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 19:45:06,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-12-13 19:45:06,859 INFO L87 Difference]: Start difference. First operand 53389 states and 90546 transitions. Second operand has 27 states, 27 states have (on average 17.185185185185187) internal successors, (464), 21 states have internal predecessors, (464), 14 states have call successors, (103), 12 states have call predecessors, (103), 12 states have return successors, (105), 14 states have call predecessors, (105), 14 states have call successors, (105)