./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product27.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_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/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_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/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_850ff9f1-e7fa-4193-bd56-4d272035c216/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 7abfb9176afcd07735578408e79f372120c27df81ffb5983e2784997c7f45a43 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 20:03:01,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:03:01,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:03:01,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:03:01,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:03:01,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:03:01,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:03:01,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:03:01,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:03:01,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:03:01,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:03:01,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:03:01,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:03:01,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:03:01,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:03:01,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:03:01,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:03:01,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:03:01,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:03:01,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:03:01,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:03:01,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:03:01,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:03:01,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:03:01,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:03:01,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:03:01,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:03:01,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:03:01,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:03:01,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:03:01,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:03:01,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:03:01,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:03:01,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:03:01,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:03:01,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:03:01,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:03:01,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:03:01,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:03:01,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:03:01,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:03:01,551 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 20:03:01,565 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:03:01,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:03:01,565 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:03:01,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:03:01,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:03:01,574 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:03:01,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:03:01,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:03:01,575 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:03:01,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:03:01,576 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:03:01,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:03:01,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:03:01,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:03:01,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:03:01,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:03:01,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:03:01,577 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:03:01,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:03:01,577 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:03:01,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:03:01,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:03:01,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:03:01,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:03:01,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:03:01,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:03:01,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:03:01,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:03:01,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:03:01,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:03:01,579 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:03:01,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:03:01,579 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:03:01,579 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:03:01,580 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:03:01,580 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_850ff9f1-e7fa-4193-bd56-4d272035c216/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7abfb9176afcd07735578408e79f372120c27df81ffb5983e2784997c7f45a43 [2022-12-13 20:03:01,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:03:01,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:03:01,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:03:01,777 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:03:01,777 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:03:01,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c [2022-12-13 20:03:04,401 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:03:04,594 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:03:04,595 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c [2022-12-13 20:03:04,608 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/data/2e5b47684/588fa42d841c47cb8383102a6bbd7ae1/FLAGff202efd2 [2022-12-13 20:03:04,618 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/data/2e5b47684/588fa42d841c47cb8383102a6bbd7ae1 [2022-12-13 20:03:04,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:03:04,621 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:03:04,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:03:04,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:03:04,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:03:04,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:03:04" (1/1) ... [2022-12-13 20:03:04,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d59a905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:04, skipping insertion in model container [2022-12-13 20:03:04,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:03:04" (1/1) ... [2022-12-13 20:03:04,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:03:04,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:03:04,849 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_850ff9f1-e7fa-4193-bd56-4d272035c216/sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c[16494,16507] [2022-12-13 20:03:04,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:03:04,980 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:03:05,009 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_850ff9f1-e7fa-4193-bd56-4d272035c216/sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c[16494,16507] [2022-12-13 20:03:05,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:03:05,085 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:03:05,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:05 WrapperNode [2022-12-13 20:03:05,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:03:05,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:03:05,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:03:05,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:03:05,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:05" (1/1) ... [2022-12-13 20:03:05,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:05" (1/1) ... [2022-12-13 20:03:05,147 INFO L138 Inliner]: procedures = 95, calls = 342, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 1163 [2022-12-13 20:03:05,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:03:05,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:03:05,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:03:05,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:03:05,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:05" (1/1) ... [2022-12-13 20:03:05,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:05" (1/1) ... [2022-12-13 20:03:05,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:05" (1/1) ... [2022-12-13 20:03:05,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:05" (1/1) ... [2022-12-13 20:03:05,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:05" (1/1) ... [2022-12-13 20:03:05,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:05" (1/1) ... [2022-12-13 20:03:05,181 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:05" (1/1) ... [2022-12-13 20:03:05,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:05" (1/1) ... [2022-12-13 20:03:05,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:03:05,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:03:05,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:03:05,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:03:05,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:05" (1/1) ... [2022-12-13 20:03:05,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:03:05,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:03:05,217 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:03:05,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:03:05,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:03:05,251 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-12-13 20:03:05,251 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-12-13 20:03:05,251 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-12-13 20:03:05,251 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-12-13 20:03:05,251 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-13 20:03:05,252 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-13 20:03:05,252 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-12-13 20:03:05,252 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-12-13 20:03:05,252 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-13 20:03:05,252 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-13 20:03:05,252 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-13 20:03:05,252 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-13 20:03:05,252 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-13 20:03:05,252 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-13 20:03:05,252 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-13 20:03:05,253 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-13 20:03:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-12-13 20:03:05,253 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-12-13 20:03:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-13 20:03:05,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-13 20:03:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-13 20:03:05,253 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-13 20:03:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-13 20:03:05,253 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-13 20:03:05,254 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-13 20:03:05,254 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-13 20:03:05,254 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-12-13 20:03:05,254 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-12-13 20:03:05,254 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-13 20:03:05,254 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-13 20:03:05,254 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-12-13 20:03:05,254 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-12-13 20:03:05,254 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-13 20:03:05,255 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-13 20:03:05,255 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-13 20:03:05,255 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-13 20:03:05,255 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-13 20:03:05,255 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-13 20:03:05,255 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-13 20:03:05,255 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-13 20:03:05,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:03:05,255 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-13 20:03:05,256 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-13 20:03:05,256 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-13 20:03:05,256 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-13 20:03:05,256 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-13 20:03:05,256 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-13 20:03:05,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:03:05,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:03:05,256 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-13 20:03:05,256 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-13 20:03:05,374 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:03:05,376 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:03:06,130 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:03:06,138 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:03:06,138 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 20:03:06,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:03:06 BoogieIcfgContainer [2022-12-13 20:03:06,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:03:06,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:03:06,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:03:06,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:03:06,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:03:04" (1/3) ... [2022-12-13 20:03:06,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8da76fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:03:06, skipping insertion in model container [2022-12-13 20:03:06,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:05" (2/3) ... [2022-12-13 20:03:06,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8da76fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:03:06, skipping insertion in model container [2022-12-13 20:03:06,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:03:06" (3/3) ... [2022-12-13 20:03:06,145 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product27.cil.c [2022-12-13 20:03:06,165 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:03:06,165 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 20:03:06,211 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:03:06,216 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;@744f41ef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:03:06,216 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 20:03:06,220 INFO L276 IsEmpty]: Start isEmpty. Operand has 569 states, 447 states have (on average 1.691275167785235) internal successors, (756), 468 states have internal predecessors, (756), 96 states have call successors, (96), 24 states have call predecessors, (96), 24 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) [2022-12-13 20:03:06,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 20:03:06,237 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:03:06,238 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 20:03:06,238 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:03:06,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:06,242 INFO L85 PathProgramCache]: Analyzing trace with hash -289934377, now seen corresponding path program 1 times [2022-12-13 20:03:06,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:06,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381307678] [2022-12-13 20:03:06,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:06,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:06,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:03:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:06,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:06,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 20:03:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:06,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 20:03:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:06,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:06,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:06,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:06,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:03:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:06,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 20:03:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:06,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:06,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:06,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 20:03:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:06,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:03:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:06,930 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:03:06,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:03:06,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381307678] [2022-12-13 20:03:06,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381307678] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:03:06,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:03:06,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:03:06,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722741447] [2022-12-13 20:03:06,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:03:06,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:03:06,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:06,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:03:06,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:03:06,973 INFO L87 Difference]: Start difference. First operand has 569 states, 447 states have (on average 1.691275167785235) internal successors, (756), 468 states have internal predecessors, (756), 96 states have call successors, (96), 24 states have call predecessors, (96), 24 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:03:11,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:03:11,778 INFO L93 Difference]: Finished difference Result 1379 states and 2333 transitions. [2022-12-13 20:03:11,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 20:03:11,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-12-13 20:03:11,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:03:11,794 INFO L225 Difference]: With dead ends: 1379 [2022-12-13 20:03:11,794 INFO L226 Difference]: Without dead ends: 822 [2022-12-13 20:03:11,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:03:11,802 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 1452 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 2916 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 3324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 2916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:03:11,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 1860 Invalid, 3324 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [408 Valid, 2916 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-13 20:03:11,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-12-13 20:03:11,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-12-13 20:03:11,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6870748299319729) internal successors, (744), 460 states have internal predecessors, (744), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-13 20:03:11,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 931 transitions. [2022-12-13 20:03:11,957 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 931 transitions. Word has length 102 [2022-12-13 20:03:11,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:03:11,958 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 931 transitions. [2022-12-13 20:03:11,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:03:11,958 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 931 transitions. [2022-12-13 20:03:11,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-13 20:03:11,964 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:03:11,965 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 20:03:11,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:03:11,965 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:03:11,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:11,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1378724081, now seen corresponding path program 1 times [2022-12-13 20:03:11,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:11,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048356113] [2022-12-13 20:03:11,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:11,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:12,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:03:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:12,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:12,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:03:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:12,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 20:03:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:12,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:12,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:12,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:12,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:03:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:12,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 20:03:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:12,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:12,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:12,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 20:03:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:12,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:03:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:12,405 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:03:12,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:03:12,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048356113] [2022-12-13 20:03:12,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048356113] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:03:12,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:03:12,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:03:12,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446432630] [2022-12-13 20:03:12,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:03:12,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:03:12,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:12,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:03:12,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:03:12,408 INFO L87 Difference]: Start difference. First operand 561 states and 931 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:03:17,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:03:17,136 INFO L93 Difference]: Finished difference Result 1365 states and 2295 transitions. [2022-12-13 20:03:17,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 20:03:17,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2022-12-13 20:03:17,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:03:17,141 INFO L225 Difference]: With dead ends: 1365 [2022-12-13 20:03:17,141 INFO L226 Difference]: Without dead ends: 822 [2022-12-13 20:03:17,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:03:17,144 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1447 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 2914 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 3320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 2914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:03:17,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 1835 Invalid, 3320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 2914 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-12-13 20:03:17,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-12-13 20:03:17,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-12-13 20:03:17,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6848072562358276) internal successors, (743), 460 states have internal predecessors, (743), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-13 20:03:17,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 930 transitions. [2022-12-13 20:03:17,234 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 930 transitions. Word has length 105 [2022-12-13 20:03:17,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:03:17,234 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 930 transitions. [2022-12-13 20:03:17,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:03:17,234 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 930 transitions. [2022-12-13 20:03:17,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-13 20:03:17,237 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:03:17,237 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 20:03:17,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:03:17,237 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:03:17,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:17,237 INFO L85 PathProgramCache]: Analyzing trace with hash 776360423, now seen corresponding path program 1 times [2022-12-13 20:03:17,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:17,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618825854] [2022-12-13 20:03:17,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:17,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:17,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:03:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:17,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:17,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:17,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 20:03:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:17,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 20:03:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:17,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:17,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:17,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:17,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:03:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:17,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 20:03:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:17,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:17,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:17,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 20:03:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:17,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:03:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:17,589 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:03:17,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:03:17,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618825854] [2022-12-13 20:03:17,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618825854] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:03:17,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:03:17,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:03:17,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701682344] [2022-12-13 20:03:17,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:03:17,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:03:17,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:17,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:03:17,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:03:17,591 INFO L87 Difference]: Start difference. First operand 561 states and 930 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:03:21,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:03:21,801 INFO L93 Difference]: Finished difference Result 1365 states and 2294 transitions. [2022-12-13 20:03:21,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 20:03:21,802 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2022-12-13 20:03:21,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:03:21,806 INFO L225 Difference]: With dead ends: 1365 [2022-12-13 20:03:21,806 INFO L226 Difference]: Without dead ends: 822 [2022-12-13 20:03:21,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:03:21,809 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 1447 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 2909 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 3319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 2909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-13 20:03:21,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 1822 Invalid, 3319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 2909 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-13 20:03:21,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-12-13 20:03:21,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-12-13 20:03:21,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6825396825396826) internal successors, (742), 460 states have internal predecessors, (742), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-13 20:03:21,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 929 transitions. [2022-12-13 20:03:21,912 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 929 transitions. Word has length 106 [2022-12-13 20:03:21,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:03:21,912 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 929 transitions. [2022-12-13 20:03:21,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:03:21,913 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 929 transitions. [2022-12-13 20:03:21,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 20:03:21,915 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:03:21,915 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 20:03:21,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:03:21,915 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:03:21,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:21,916 INFO L85 PathProgramCache]: Analyzing trace with hash -774044371, now seen corresponding path program 1 times [2022-12-13 20:03:21,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:21,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495963787] [2022-12-13 20:03:21,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:21,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:22,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:03:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:22,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:22,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 20:03:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:22,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 20:03:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:22,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:22,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:22,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:22,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:03:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:22,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 20:03:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:22,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:22,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:22,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 20:03:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:22,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:03:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:03:22,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:03:22,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495963787] [2022-12-13 20:03:22,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495963787] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:03:22,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:03:22,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:03:22,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696806191] [2022-12-13 20:03:22,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:03:22,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:03:22,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:22,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:03:22,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:03:22,302 INFO L87 Difference]: Start difference. First operand 561 states and 929 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:03:26,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:03:26,340 INFO L93 Difference]: Finished difference Result 1365 states and 2293 transitions. [2022-12-13 20:03:26,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 20:03:26,341 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2022-12-13 20:03:26,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:03:26,345 INFO L225 Difference]: With dead ends: 1365 [2022-12-13 20:03:26,345 INFO L226 Difference]: Without dead ends: 822 [2022-12-13 20:03:26,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:03:26,347 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1881 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 2849 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1962 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 3418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 2849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 20:03:26,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1962 Valid, 1757 Invalid, 3418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 2849 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 20:03:26,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-12-13 20:03:26,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-12-13 20:03:26,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6802721088435375) internal successors, (741), 460 states have internal predecessors, (741), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-13 20:03:26,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 928 transitions. [2022-12-13 20:03:26,441 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 928 transitions. Word has length 107 [2022-12-13 20:03:26,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:03:26,441 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 928 transitions. [2022-12-13 20:03:26,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:03:26,441 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 928 transitions. [2022-12-13 20:03:26,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-13 20:03:26,443 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:03:26,444 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 20:03:26,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:03:26,444 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:03:26,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:26,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1648953309, now seen corresponding path program 1 times [2022-12-13 20:03:26,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:26,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021558478] [2022-12-13 20:03:26,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:26,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:26,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:03:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:26,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:26,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 20:03:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:26,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 20:03:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:26,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:26,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:26,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:26,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:03:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:26,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 20:03:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:26,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:26,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:26,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 20:03:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:26,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:03:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:26,785 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:03:26,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:03:26,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021558478] [2022-12-13 20:03:26,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021558478] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:03:26,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:03:26,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:03:26,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957098094] [2022-12-13 20:03:26,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:03:26,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:03:26,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:26,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:03:26,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:03:26,787 INFO L87 Difference]: Start difference. First operand 561 states and 928 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:03:31,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:03:31,014 INFO L93 Difference]: Finished difference Result 1365 states and 2292 transitions. [2022-12-13 20:03:31,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 20:03:31,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2022-12-13 20:03:31,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:03:31,018 INFO L225 Difference]: With dead ends: 1365 [2022-12-13 20:03:31,018 INFO L226 Difference]: Without dead ends: 822 [2022-12-13 20:03:31,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:03:31,020 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 1866 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 2846 mSolverCounterSat, 562 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1947 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 3408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 2846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-13 20:03:31,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1947 Valid, 1775 Invalid, 3408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [562 Valid, 2846 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-13 20:03:31,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-12-13 20:03:31,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-12-13 20:03:31,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6780045351473922) internal successors, (740), 460 states have internal predecessors, (740), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-13 20:03:31,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 927 transitions. [2022-12-13 20:03:31,111 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 927 transitions. Word has length 108 [2022-12-13 20:03:31,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:03:31,111 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 927 transitions. [2022-12-13 20:03:31,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:03:31,111 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 927 transitions. [2022-12-13 20:03:31,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-13 20:03:31,113 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:03:31,113 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 20:03:31,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 20:03:31,113 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:03:31,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:31,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1236640105, now seen corresponding path program 1 times [2022-12-13 20:03:31,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:31,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627241409] [2022-12-13 20:03:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:31,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:31,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:03:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:31,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:31,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:03:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:31,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 20:03:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:31,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:31,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:31,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:31,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:03:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:31,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 20:03:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:31,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:31,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:31,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 20:03:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:31,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:03:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:31,486 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:03:31,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:03:31,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627241409] [2022-12-13 20:03:31,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627241409] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:03:31,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:03:31,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:03:31,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702792017] [2022-12-13 20:03:31,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:03:31,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:03:31,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:31,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:03:31,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:03:31,488 INFO L87 Difference]: Start difference. First operand 561 states and 927 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:03:36,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:03:36,498 INFO L93 Difference]: Finished difference Result 1325 states and 2216 transitions. [2022-12-13 20:03:36,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 20:03:36,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2022-12-13 20:03:36,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:03:36,502 INFO L225 Difference]: With dead ends: 1325 [2022-12-13 20:03:36,502 INFO L226 Difference]: Without dead ends: 822 [2022-12-13 20:03:36,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:03:36,505 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1538 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 2936 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 3351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 2936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-13 20:03:36,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 1823 Invalid, 3351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 2936 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-12-13 20:03:36,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-12-13 20:03:36,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-12-13 20:03:36,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6666666666666667) internal successors, (735), 460 states have internal predecessors, (735), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-13 20:03:36,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 922 transitions. [2022-12-13 20:03:36,635 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 922 transitions. Word has length 109 [2022-12-13 20:03:36,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:03:36,636 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 922 transitions. [2022-12-13 20:03:36,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:03:36,636 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 922 transitions. [2022-12-13 20:03:36,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-13 20:03:36,639 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:03:36,640 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 20:03:36,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 20:03:36,640 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:03:36,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:36,640 INFO L85 PathProgramCache]: Analyzing trace with hash -130417927, now seen corresponding path program 1 times [2022-12-13 20:03:36,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:36,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64256926] [2022-12-13 20:03:36,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:36,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:36,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:03:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:36,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:36,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:03:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:36,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:03:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:36,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:36,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:36,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:36,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:03:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:36,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 20:03:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:36,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:36,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:37,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 20:03:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:37,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:03:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:03:37,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:03:37,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64256926] [2022-12-13 20:03:37,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64256926] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:03:37,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:03:37,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:03:37,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786024302] [2022-12-13 20:03:37,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:03:37,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:03:37,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:37,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:03:37,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:03:37,015 INFO L87 Difference]: Start difference. First operand 561 states and 922 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:03:41,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:03:41,993 INFO L93 Difference]: Finished difference Result 1325 states and 2211 transitions. [2022-12-13 20:03:41,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 20:03:41,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2022-12-13 20:03:41,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:03:41,997 INFO L225 Difference]: With dead ends: 1325 [2022-12-13 20:03:41,997 INFO L226 Difference]: Without dead ends: 822 [2022-12-13 20:03:41,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:03:41,999 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 1093 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 3004 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 3261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-12-13 20:03:41,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 1901 Invalid, 3261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 3004 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-12-13 20:03:42,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-12-13 20:03:42,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-12-13 20:03:42,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.655328798185941) internal successors, (730), 460 states have internal predecessors, (730), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-13 20:03:42,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 917 transitions. [2022-12-13 20:03:42,099 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 917 transitions. Word has length 110 [2022-12-13 20:03:42,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:03:42,099 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 917 transitions. [2022-12-13 20:03:42,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:03:42,100 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 917 transitions. [2022-12-13 20:03:42,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 20:03:42,104 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:03:42,104 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 20:03:42,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 20:03:42,105 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:03:42,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:42,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1310787858, now seen corresponding path program 1 times [2022-12-13 20:03:42,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:42,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472668240] [2022-12-13 20:03:42,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:42,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:42,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:03:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:42,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:42,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:03:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:42,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 20:03:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:42,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:42,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:42,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:42,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:03:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:42,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 20:03:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:42,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:42,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:42,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 20:03:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:42,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:03:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:03:42,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:03:42,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472668240] [2022-12-13 20:03:42,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472668240] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:03:42,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:03:42,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:03:42,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489370472] [2022-12-13 20:03:42,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:03:42,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:03:42,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:42,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:03:42,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:03:42,528 INFO L87 Difference]: Start difference. First operand 561 states and 917 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:03:47,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:03:47,164 INFO L93 Difference]: Finished difference Result 1325 states and 2206 transitions. [2022-12-13 20:03:47,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 20:03:47,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2022-12-13 20:03:47,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:03:47,168 INFO L225 Difference]: With dead ends: 1325 [2022-12-13 20:03:47,168 INFO L226 Difference]: Without dead ends: 822 [2022-12-13 20:03:47,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:03:47,169 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 1522 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 2785 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 3198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 2785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:03:47,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1603 Valid, 1823 Invalid, 3198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 2785 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-13 20:03:47,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-12-13 20:03:47,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-12-13 20:03:47,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6439909297052153) internal successors, (725), 460 states have internal predecessors, (725), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-13 20:03:47,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 912 transitions. [2022-12-13 20:03:47,266 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 912 transitions. Word has length 111 [2022-12-13 20:03:47,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:03:47,266 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 912 transitions. [2022-12-13 20:03:47,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:03:47,267 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 912 transitions. [2022-12-13 20:03:47,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-13 20:03:47,269 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:03:47,269 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 20:03:47,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 20:03:47,269 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:03:47,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:47,270 INFO L85 PathProgramCache]: Analyzing trace with hash -998793954, now seen corresponding path program 1 times [2022-12-13 20:03:47,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:47,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233904515] [2022-12-13 20:03:47,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:47,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:47,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:03:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:47,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:47,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:03:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:47,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 20:03:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:47,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:47,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:47,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:47,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:03:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:47,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 20:03:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:47,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:47,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:47,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 20:03:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:47,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:03:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:47,576 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:03:47,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:03:47,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233904515] [2022-12-13 20:03:47,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233904515] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:03:47,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:03:47,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:03:47,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323029259] [2022-12-13 20:03:47,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:03:47,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:03:47,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:47,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:03:47,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:03:47,578 INFO L87 Difference]: Start difference. First operand 561 states and 912 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:03:52,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:03:52,540 INFO L93 Difference]: Finished difference Result 1325 states and 2201 transitions. [2022-12-13 20:03:52,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 20:03:52,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-12-13 20:03:52,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:03:52,544 INFO L225 Difference]: With dead ends: 1325 [2022-12-13 20:03:52,544 INFO L226 Difference]: Without dead ends: 822 [2022-12-13 20:03:52,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:03:52,545 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1521 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 2870 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 2870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-13 20:03:52,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1602 Valid, 1844 Invalid, 3279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 2870 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-12-13 20:03:52,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-12-13 20:03:52,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-12-13 20:03:52,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6326530612244898) internal successors, (720), 460 states have internal predecessors, (720), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-13 20:03:52,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 907 transitions. [2022-12-13 20:03:52,681 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 907 transitions. Word has length 112 [2022-12-13 20:03:52,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:03:52,682 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 907 transitions. [2022-12-13 20:03:52,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:03:52,682 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 907 transitions. [2022-12-13 20:03:52,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-13 20:03:52,684 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:03:52,685 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 20:03:52,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 20:03:52,685 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:03:52,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:52,685 INFO L85 PathProgramCache]: Analyzing trace with hash -359403905, now seen corresponding path program 1 times [2022-12-13 20:03:52,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:52,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385053157] [2022-12-13 20:03:52,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:52,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:52,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:03:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:52,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:52,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:03:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:52,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 20:03:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:53,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:53,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:53,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:53,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:03:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:53,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 20:03:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:53,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:53,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:53,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 20:03:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:53,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:03:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:03:53,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:03:53,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385053157] [2022-12-13 20:03:53,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385053157] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:03:53,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:03:53,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:03:53,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554730132] [2022-12-13 20:03:53,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:03:53,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:03:53,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:53,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:03:53,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:03:53,041 INFO L87 Difference]: Start difference. First operand 561 states and 907 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:03:57,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:03:57,926 INFO L93 Difference]: Finished difference Result 1340 states and 2216 transitions. [2022-12-13 20:03:57,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 20:03:57,927 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-12-13 20:03:57,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:03:57,930 INFO L225 Difference]: With dead ends: 1340 [2022-12-13 20:03:57,930 INFO L226 Difference]: Without dead ends: 843 [2022-12-13 20:03:57,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-12-13 20:03:57,931 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 1507 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 2774 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 3184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 2774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:03:57,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 1828 Invalid, 3184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 2774 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-13 20:03:57,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-12-13 20:03:58,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 563. [2022-12-13 20:03:58,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 443 states have (on average 1.6297968397291196) internal successors, (722), 462 states have internal predecessors, (722), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-13 20:03:58,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 909 transitions. [2022-12-13 20:03:58,053 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 909 transitions. Word has length 112 [2022-12-13 20:03:58,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:03:58,053 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 909 transitions. [2022-12-13 20:03:58,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:03:58,053 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 909 transitions. [2022-12-13 20:03:58,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 20:03:58,055 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:03:58,055 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 20:03:58,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 20:03:58,055 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:03:58,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:58,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1668161421, now seen corresponding path program 1 times [2022-12-13 20:03:58,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:58,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041634831] [2022-12-13 20:03:58,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:58,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:58,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:03:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:58,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:58,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:03:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:58,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 20:03:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:58,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:58,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:58,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:58,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:03:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:58,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 20:03:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:58,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:58,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:03:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:58,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 20:03:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:58,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:03:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:58,356 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:03:58,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:03:58,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041634831] [2022-12-13 20:03:58,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041634831] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:03:58,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:03:58,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:03:58,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259372313] [2022-12-13 20:03:58,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:03:58,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:03:58,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:58,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:03:58,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:03:58,357 INFO L87 Difference]: Start difference. First operand 563 states and 909 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:04:03,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:04:03,084 INFO L93 Difference]: Finished difference Result 1331 states and 2202 transitions. [2022-12-13 20:04:03,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 20:04:03,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-12-13 20:04:03,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:04:03,087 INFO L225 Difference]: With dead ends: 1331 [2022-12-13 20:04:03,087 INFO L226 Difference]: Without dead ends: 826 [2022-12-13 20:04:03,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:04:03,089 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 1941 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 2682 mSolverCounterSat, 559 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2022 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 3241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 559 IncrementalHoareTripleChecker+Valid, 2682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:04:03,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2022 Valid, 1789 Invalid, 3241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [559 Valid, 2682 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-13 20:04:03,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-12-13 20:04:03,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 563. [2022-12-13 20:04:03,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 443 states have (on average 1.618510158013544) internal successors, (717), 462 states have internal predecessors, (717), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-13 20:04:03,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 904 transitions. [2022-12-13 20:04:03,198 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 904 transitions. Word has length 113 [2022-12-13 20:04:03,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:04:03,198 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 904 transitions. [2022-12-13 20:04:03,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:04:03,199 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 904 transitions. [2022-12-13 20:04:03,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 20:04:03,201 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:04:03,201 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 20:04:03,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 20:04:03,201 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:04:03,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:04:03,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1882720560, now seen corresponding path program 1 times [2022-12-13 20:04:03,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:04:03,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687961667] [2022-12-13 20:04:03,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:03,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:04:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:03,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:04:03,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:03,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:03,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:04:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:03,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 20:04:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:03,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:03,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:03,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:03,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:04:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:03,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 20:04:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:03,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:03,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:03,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 20:04:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:03,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:04:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:03,551 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:04:03,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:04:03,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687961667] [2022-12-13 20:04:03,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687961667] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:04:03,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:04:03,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:04:03,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423289025] [2022-12-13 20:04:03,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:04:03,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:04:03,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:04:03,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:04:03,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:04:03,553 INFO L87 Difference]: Start difference. First operand 563 states and 904 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:04:08,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:04:08,347 INFO L93 Difference]: Finished difference Result 1344 states and 2213 transitions. [2022-12-13 20:04:08,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 20:04:08,347 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-12-13 20:04:08,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:04:08,350 INFO L225 Difference]: With dead ends: 1344 [2022-12-13 20:04:08,350 INFO L226 Difference]: Without dead ends: 847 [2022-12-13 20:04:08,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-12-13 20:04:08,351 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1508 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 2753 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 3164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 2753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:04:08,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1589 Valid, 1825 Invalid, 3164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 2753 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-12-13 20:04:08,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-12-13 20:04:08,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 566. [2022-12-13 20:04:08,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 446 states have (on average 1.6143497757847534) internal successors, (720), 465 states have internal predecessors, (720), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-13 20:04:08,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 907 transitions. [2022-12-13 20:04:08,464 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 907 transitions. Word has length 113 [2022-12-13 20:04:08,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:04:08,465 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 907 transitions. [2022-12-13 20:04:08,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:04:08,465 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 907 transitions. [2022-12-13 20:04:08,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 20:04:08,466 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:04:08,466 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 20:04:08,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 20:04:08,466 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:04:08,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:04:08,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1600006979, now seen corresponding path program 1 times [2022-12-13 20:04:08,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:04:08,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087694867] [2022-12-13 20:04:08,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:08,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:04:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:08,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:04:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:08,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:08,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:04:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:08,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 20:04:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:08,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:08,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:08,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:08,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:04:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:08,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 20:04:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:08,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:08,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:08,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 20:04:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:08,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:04:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:08,835 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:04:08,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:04:08,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087694867] [2022-12-13 20:04:08,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087694867] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:04:08,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:04:08,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 20:04:08,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003928199] [2022-12-13 20:04:08,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:04:08,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 20:04:08,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:04:08,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 20:04:08,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:04:08,837 INFO L87 Difference]: Start difference. First operand 566 states and 907 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 20:04:14,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:04:14,051 INFO L93 Difference]: Finished difference Result 1348 states and 2219 transitions. [2022-12-13 20:04:14,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 20:04:14,052 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2022-12-13 20:04:14,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:04:14,055 INFO L225 Difference]: With dead ends: 1348 [2022-12-13 20:04:14,055 INFO L226 Difference]: Without dead ends: 854 [2022-12-13 20:04:14,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-13 20:04:14,057 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 1937 mSDsluCounter, 2761 mSDsCounter, 0 mSdLazyCounter, 5130 mSolverCounterSat, 561 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 3257 SdHoareTripleChecker+Invalid, 5691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 561 IncrementalHoareTripleChecker+Valid, 5130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:04:14,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2019 Valid, 3257 Invalid, 5691 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [561 Valid, 5130 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-13 20:04:14,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-12-13 20:04:14,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 577. [2022-12-13 20:04:14,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 454 states have (on average 1.6101321585903083) internal successors, (731), 475 states have internal predecessors, (731), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-12-13 20:04:14,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 922 transitions. [2022-12-13 20:04:14,182 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 922 transitions. Word has length 114 [2022-12-13 20:04:14,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:04:14,182 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 922 transitions. [2022-12-13 20:04:14,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 20:04:14,183 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 922 transitions. [2022-12-13 20:04:14,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 20:04:14,184 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:04:14,184 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 20:04:14,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 20:04:14,184 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:04:14,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:04:14,185 INFO L85 PathProgramCache]: Analyzing trace with hash -461208220, now seen corresponding path program 1 times [2022-12-13 20:04:14,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:04:14,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831381875] [2022-12-13 20:04:14,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:14,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:04:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:14,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:04:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:14,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:14,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:04:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:14,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 20:04:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:14,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:14,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:14,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:14,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:04:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:14,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 20:04:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:14,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:14,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:14,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 20:04:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:14,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:04:14,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:14,484 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:04:14,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:04:14,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831381875] [2022-12-13 20:04:14,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831381875] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:04:14,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:04:14,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:04:14,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369773776] [2022-12-13 20:04:14,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:04:14,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:04:14,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:04:14,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:04:14,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:04:14,485 INFO L87 Difference]: Start difference. First operand 577 states and 922 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:04:18,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:04:18,882 INFO L93 Difference]: Finished difference Result 1371 states and 2250 transitions. [2022-12-13 20:04:18,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 20:04:18,882 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-12-13 20:04:18,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:04:18,886 INFO L225 Difference]: With dead ends: 1371 [2022-12-13 20:04:18,886 INFO L226 Difference]: Without dead ends: 871 [2022-12-13 20:04:18,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-12-13 20:04:18,887 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1937 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 2689 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2018 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 3258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 2689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-13 20:04:18,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2018 Valid, 1765 Invalid, 3258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 2689 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-13 20:04:18,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-12-13 20:04:19,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 581. [2022-12-13 20:04:19,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 458 states have (on average 1.6026200873362446) internal successors, (734), 479 states have internal predecessors, (734), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-12-13 20:04:19,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 925 transitions. [2022-12-13 20:04:19,011 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 925 transitions. Word has length 114 [2022-12-13 20:04:19,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:04:19,011 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 925 transitions. [2022-12-13 20:04:19,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:04:19,011 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 925 transitions. [2022-12-13 20:04:19,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 20:04:19,013 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:04:19,013 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 20:04:19,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 20:04:19,013 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:04:19,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:04:19,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1894424764, now seen corresponding path program 1 times [2022-12-13 20:04:19,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:04:19,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471526428] [2022-12-13 20:04:19,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:19,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:04:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:19,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:04:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:19,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:19,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:04:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:19,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 20:04:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:19,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:19,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:19,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:19,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:04:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:19,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 20:04:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:19,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:19,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:19,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 20:04:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:19,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:04:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:19,293 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:04:19,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:04:19,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471526428] [2022-12-13 20:04:19,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471526428] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:04:19,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:04:19,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:04:19,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111045972] [2022-12-13 20:04:19,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:04:19,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:04:19,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:04:19,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:04:19,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:04:19,295 INFO L87 Difference]: Start difference. First operand 581 states and 925 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:04:23,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:04:23,410 INFO L93 Difference]: Finished difference Result 1413 states and 2293 transitions. [2022-12-13 20:04:23,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 20:04:23,410 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-12-13 20:04:23,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:04:23,413 INFO L225 Difference]: With dead ends: 1413 [2022-12-13 20:04:23,413 INFO L226 Difference]: Without dead ends: 830 [2022-12-13 20:04:23,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:04:23,414 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1846 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 2723 mSolverCounterSat, 566 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1927 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 3289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 566 IncrementalHoareTripleChecker+Valid, 2723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-13 20:04:23,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1927 Valid, 1760 Invalid, 3289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [566 Valid, 2723 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-13 20:04:23,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2022-12-13 20:04:23,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 562. [2022-12-13 20:04:23,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 442 states have (on average 1.6108597285067874) internal successors, (712), 461 states have internal predecessors, (712), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-13 20:04:23,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 899 transitions. [2022-12-13 20:04:23,538 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 899 transitions. Word has length 114 [2022-12-13 20:04:23,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:04:23,538 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 899 transitions. [2022-12-13 20:04:23,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:04:23,538 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 899 transitions. [2022-12-13 20:04:23,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-13 20:04:23,539 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:04:23,539 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 20:04:23,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 20:04:23,539 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:04:23,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:04:23,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1056100469, now seen corresponding path program 1 times [2022-12-13 20:04:23,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:04:23,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299285136] [2022-12-13 20:04:23,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:23,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:04:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:23,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:04:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:23,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:23,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:04:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:23,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 20:04:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:23,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:23,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:23,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:23,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:04:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:23,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 20:04:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:23,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:23,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:23,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 20:04:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:23,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:04:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:23,829 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:04:23,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:04:23,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299285136] [2022-12-13 20:04:23,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299285136] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:04:23,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:04:23,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:04:23,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189149920] [2022-12-13 20:04:23,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:04:23,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:04:23,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:04:23,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:04:23,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:04:23,831 INFO L87 Difference]: Start difference. First operand 562 states and 899 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:04:27,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:04:27,984 INFO L93 Difference]: Finished difference Result 1348 states and 2208 transitions. [2022-12-13 20:04:27,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 20:04:27,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2022-12-13 20:04:27,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:04:27,988 INFO L225 Difference]: With dead ends: 1348 [2022-12-13 20:04:27,989 INFO L226 Difference]: Without dead ends: 851 [2022-12-13 20:04:27,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-12-13 20:04:27,990 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1895 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 2670 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1976 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 3242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 2670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 20:04:27,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1976 Valid, 1759 Invalid, 3242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 2670 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 20:04:27,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-12-13 20:04:28,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 567. [2022-12-13 20:04:28,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 447 states have (on average 1.604026845637584) internal successors, (717), 466 states have internal predecessors, (717), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-13 20:04:28,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 904 transitions. [2022-12-13 20:04:28,119 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 904 transitions. Word has length 115 [2022-12-13 20:04:28,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:04:28,119 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 904 transitions. [2022-12-13 20:04:28,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 20:04:28,119 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 904 transitions. [2022-12-13 20:04:28,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-13 20:04:28,121 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:04:28,121 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 20:04:28,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 20:04:28,121 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:04:28,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:04:28,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1773056601, now seen corresponding path program 1 times [2022-12-13 20:04:28,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:04:28,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153555077] [2022-12-13 20:04:28,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:28,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:04:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:28,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:04:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:28,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:28,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:04:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:28,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 20:04:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:28,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:28,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:28,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:28,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:04:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:28,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 20:04:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:28,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:28,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:28,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 20:04:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:28,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:04:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:28,575 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:04:28,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:04:28,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153555077] [2022-12-13 20:04:28,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153555077] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:04:28,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:04:28,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-13 20:04:28,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782582387] [2022-12-13 20:04:28,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:04:28,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 20:04:28,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:04:28,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 20:04:28,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-12-13 20:04:28,577 INFO L87 Difference]: Start difference. First operand 567 states and 904 transitions. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 20:04:37,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:04:37,582 INFO L93 Difference]: Finished difference Result 1601 states and 2735 transitions. [2022-12-13 20:04:37,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 20:04:37,582 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 116 [2022-12-13 20:04:37,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:04:37,590 INFO L225 Difference]: With dead ends: 1601 [2022-12-13 20:04:37,590 INFO L226 Difference]: Without dead ends: 1112 [2022-12-13 20:04:37,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-12-13 20:04:37,594 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 4022 mSDsluCounter, 3465 mSDsCounter, 0 mSdLazyCounter, 10141 mSolverCounterSat, 1975 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4022 SdHoareTripleChecker+Valid, 4047 SdHoareTripleChecker+Invalid, 12116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1975 IncrementalHoareTripleChecker+Valid, 10141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:04:37,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4022 Valid, 4047 Invalid, 12116 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1975 Valid, 10141 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-12-13 20:04:37,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-12-13 20:04:37,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 576. [2022-12-13 20:04:37,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 454 states have (on average 1.5947136563876652) internal successors, (724), 472 states have internal predecessors, (724), 96 states have call successors, (96), 24 states have call predecessors, (96), 25 states have return successors, (110), 92 states have call predecessors, (110), 91 states have call successors, (110) [2022-12-13 20:04:37,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 930 transitions. [2022-12-13 20:04:37,833 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 930 transitions. Word has length 116 [2022-12-13 20:04:37,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:04:37,833 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 930 transitions. [2022-12-13 20:04:37,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 20:04:37,833 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 930 transitions. [2022-12-13 20:04:37,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-13 20:04:37,835 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:04:37,835 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 20:04:37,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 20:04:37,835 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:04:37,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:04:37,835 INFO L85 PathProgramCache]: Analyzing trace with hash 673454971, now seen corresponding path program 1 times [2022-12-13 20:04:37,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:04:37,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601536178] [2022-12-13 20:04:37,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:37,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:04:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:37,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:04:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:37,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:37,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:04:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:38,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 20:04:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:38,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:38,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:38,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:38,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:04:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:38,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 20:04:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:38,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:38,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:38,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 20:04:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:38,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 20:04:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:38,225 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 20:04:38,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:04:38,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601536178] [2022-12-13 20:04:38,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601536178] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:04:38,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373330900] [2022-12-13 20:04:38,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:38,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:04:38,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:04:38,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:04:38,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:04:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:38,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:04:38,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:04:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 20:04:38,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:04:38,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373330900] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:04:38,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:04:38,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2022-12-13 20:04:38,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769104831] [2022-12-13 20:04:38,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:04:38,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:04:38,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:04:38,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:04:38,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-12-13 20:04:38,534 INFO L87 Difference]: Start difference. First operand 576 states and 930 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 20:04:39,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:04:39,082 INFO L93 Difference]: Finished difference Result 1084 states and 1812 transitions. [2022-12-13 20:04:39,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:04:39,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2022-12-13 20:04:39,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:04:39,084 INFO L225 Difference]: With dead ends: 1084 [2022-12-13 20:04:39,084 INFO L226 Difference]: Without dead ends: 586 [2022-12-13 20:04:39,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:04:39,086 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 846 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 2241 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:04:39,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 2241 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 20:04:39,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-12-13 20:04:39,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 584. [2022-12-13 20:04:39,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 461 states have (on average 1.596529284164859) internal successors, (736), 479 states have internal predecessors, (736), 96 states have call successors, (96), 25 states have call predecessors, (96), 26 states have return successors, (105), 92 states have call predecessors, (105), 91 states have call successors, (105) [2022-12-13 20:04:39,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 937 transitions. [2022-12-13 20:04:39,270 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 937 transitions. Word has length 117 [2022-12-13 20:04:39,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:04:39,271 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 937 transitions. [2022-12-13 20:04:39,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 20:04:39,271 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 937 transitions. [2022-12-13 20:04:39,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-12-13 20:04:39,272 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:04:39,272 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 20:04:39,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:04:39,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 20:04:39,474 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:04:39,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:04:39,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1086742324, now seen corresponding path program 1 times [2022-12-13 20:04:39,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:04:39,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443622866] [2022-12-13 20:04:39,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:39,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:04:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:39,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:04:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:39,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:39,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:04:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:39,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 20:04:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:39,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:39,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:39,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:39,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 20:04:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:39,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:04:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:39,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:39,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:40,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 20:04:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:40,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 20:04:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:40,005 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 20:04:40,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:04:40,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443622866] [2022-12-13 20:04:40,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443622866] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:04:40,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998664303] [2022-12-13 20:04:40,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:40,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:04:40,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:04:40,007 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:04:40,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:04:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:40,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:04:40,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:04:40,268 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 20:04:40,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:04:40,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998664303] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:04:40,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:04:40,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2022-12-13 20:04:40,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617054086] [2022-12-13 20:04:40,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:04:40,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:04:40,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:04:40,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:04:40,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-12-13 20:04:40,269 INFO L87 Difference]: Start difference. First operand 584 states and 937 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 20:04:40,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:04:40,848 INFO L93 Difference]: Finished difference Result 1100 states and 1810 transitions. [2022-12-13 20:04:40,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:04:40,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2022-12-13 20:04:40,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:04:40,852 INFO L225 Difference]: With dead ends: 1100 [2022-12-13 20:04:40,852 INFO L226 Difference]: Without dead ends: 594 [2022-12-13 20:04:40,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-12-13 20:04:40,854 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 832 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 2241 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:04:40,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 2241 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 20:04:40,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-12-13 20:04:40,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2022-12-13 20:04:40,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 469 states have (on average 1.5970149253731343) internal successors, (749), 488 states have internal predecessors, (749), 96 states have call successors, (96), 26 states have call predecessors, (96), 28 states have return successors, (106), 92 states have call predecessors, (106), 91 states have call successors, (106) [2022-12-13 20:04:40,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 951 transitions. [2022-12-13 20:04:40,998 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 951 transitions. Word has length 122 [2022-12-13 20:04:40,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:04:40,999 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 951 transitions. [2022-12-13 20:04:40,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 20:04:40,999 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 951 transitions. [2022-12-13 20:04:41,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-12-13 20:04:41,000 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:04:41,000 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 20:04:41,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 20:04:41,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:04:41,202 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:04:41,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:04:41,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1907333290, now seen corresponding path program 1 times [2022-12-13 20:04:41,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:04:41,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235640406] [2022-12-13 20:04:41,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:41,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:04:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:41,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:04:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:41,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:41,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:04:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:41,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 20:04:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:41,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:41,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:41,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:41,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 20:04:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:41,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 20:04:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:41,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:41,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:41,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 20:04:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:41,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 20:04:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:41,647 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 20:04:41,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:04:41,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235640406] [2022-12-13 20:04:41,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235640406] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:04:41,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752816654] [2022-12-13 20:04:41,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:41,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:04:41,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:04:41,649 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:04:41,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 20:04:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:41,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:04:41,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:04:41,952 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 20:04:41,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:04:41,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752816654] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:04:41,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:04:41,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2022-12-13 20:04:41,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151226546] [2022-12-13 20:04:41,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:04:41,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:04:41,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:04:41,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:04:41,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-12-13 20:04:41,953 INFO L87 Difference]: Start difference. First operand 594 states and 951 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 20:04:42,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:04:42,571 INFO L93 Difference]: Finished difference Result 1120 states and 1835 transitions. [2022-12-13 20:04:42,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:04:42,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2022-12-13 20:04:42,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:04:42,576 INFO L225 Difference]: With dead ends: 1120 [2022-12-13 20:04:42,576 INFO L226 Difference]: Without dead ends: 604 [2022-12-13 20:04:42,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-12-13 20:04:42,580 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 840 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 2241 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:04:42,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 2241 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 20:04:42,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-12-13 20:04:42,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2022-12-13 20:04:42,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 477 states have (on average 1.5974842767295598) internal successors, (762), 497 states have internal predecessors, (762), 96 states have call successors, (96), 27 states have call predecessors, (96), 30 states have return successors, (107), 92 states have call predecessors, (107), 91 states have call successors, (107) [2022-12-13 20:04:42,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 965 transitions. [2022-12-13 20:04:42,729 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 965 transitions. Word has length 123 [2022-12-13 20:04:42,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:04:42,730 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 965 transitions. [2022-12-13 20:04:42,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 20:04:42,730 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 965 transitions. [2022-12-13 20:04:42,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-12-13 20:04:42,731 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:04:42,731 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 20:04:42,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 20:04:42,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:04:42,932 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:04:42,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:04:42,932 INFO L85 PathProgramCache]: Analyzing trace with hash 238485368, now seen corresponding path program 1 times [2022-12-13 20:04:42,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:04:42,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506582650] [2022-12-13 20:04:42,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:42,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:04:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:43,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:04:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:43,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:43,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:04:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:43,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 20:04:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:43,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:43,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:43,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:43,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:04:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:43,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 20:04:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:43,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:43,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:43,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:04:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:43,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 20:04:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:43,441 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 20:04:43,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:04:43,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506582650] [2022-12-13 20:04:43,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506582650] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:04:43,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858854721] [2022-12-13 20:04:43,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:43,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:04:43,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:04:43,442 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:04:43,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 20:04:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:43,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:04:43,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:04:43,769 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 20:04:43,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:04:43,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858854721] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:04:43,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:04:43,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 16 [2022-12-13 20:04:43,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930196133] [2022-12-13 20:04:43,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:04:43,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:04:43,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:04:43,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:04:43,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:04:43,771 INFO L87 Difference]: Start difference. First operand 604 states and 965 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-13 20:04:44,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:04:44,267 INFO L93 Difference]: Finished difference Result 653 states and 1040 transitions. [2022-12-13 20:04:44,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:04:44,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 124 [2022-12-13 20:04:44,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:04:44,270 INFO L225 Difference]: With dead ends: 653 [2022-12-13 20:04:44,270 INFO L226 Difference]: Without dead ends: 638 [2022-12-13 20:04:44,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 145 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:04:44,271 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 861 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:04:44,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 1588 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:04:44,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-12-13 20:04:44,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 607. [2022-12-13 20:04:44,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 480 states have (on average 1.59375) internal successors, (765), 500 states have internal predecessors, (765), 96 states have call successors, (96), 27 states have call predecessors, (96), 30 states have return successors, (107), 92 states have call predecessors, (107), 91 states have call successors, (107) [2022-12-13 20:04:44,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 968 transitions. [2022-12-13 20:04:44,414 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 968 transitions. Word has length 124 [2022-12-13 20:04:44,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:04:44,414 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 968 transitions. [2022-12-13 20:04:44,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-13 20:04:44,414 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 968 transitions. [2022-12-13 20:04:44,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-12-13 20:04:44,415 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:04:44,415 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 20:04:44,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 20:04:44,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:04:44,617 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:04:44,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:04:44,618 INFO L85 PathProgramCache]: Analyzing trace with hash -27417805, now seen corresponding path program 1 times [2022-12-13 20:04:44,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:04:44,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034138029] [2022-12-13 20:04:44,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:44,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:04:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:44,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:04:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:44,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:44,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:04:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:44,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 20:04:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:45,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:45,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:45,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:45,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:04:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:45,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 20:04:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:45,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:45,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:45,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:04:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:45,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 20:04:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:45,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 20:04:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:45,132 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 20:04:45,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:04:45,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034138029] [2022-12-13 20:04:45,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034138029] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:04:45,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502530110] [2022-12-13 20:04:45,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:45,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:04:45,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:04:45,133 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:04:45,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 20:04:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:45,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 20:04:45,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:04:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 20:04:45,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:04:45,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502530110] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:04:45,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:04:45,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2022-12-13 20:04:45,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416030627] [2022-12-13 20:04:45,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:04:45,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:04:45,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:04:45,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:04:45,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:04:45,375 INFO L87 Difference]: Start difference. First operand 607 states and 968 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2022-12-13 20:04:45,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:04:45,550 INFO L93 Difference]: Finished difference Result 624 states and 989 transitions. [2022-12-13 20:04:45,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:04:45,551 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) Word has length 130 [2022-12-13 20:04:45,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:04:45,555 INFO L225 Difference]: With dead ends: 624 [2022-12-13 20:04:45,555 INFO L226 Difference]: Without dead ends: 609 [2022-12-13 20:04:45,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 153 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-12-13 20:04:45,556 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 37 mSDsluCounter, 2632 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3526 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:04:45,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3526 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:04:45,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-12-13 20:04:45,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 607. [2022-12-13 20:04:45,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 480 states have (on average 1.5916666666666666) internal successors, (764), 500 states have internal predecessors, (764), 96 states have call successors, (96), 27 states have call predecessors, (96), 30 states have return successors, (107), 92 states have call predecessors, (107), 91 states have call successors, (107) [2022-12-13 20:04:45,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 967 transitions. [2022-12-13 20:04:45,697 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 967 transitions. Word has length 130 [2022-12-13 20:04:45,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:04:45,698 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 967 transitions. [2022-12-13 20:04:45,698 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2022-12-13 20:04:45,698 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 967 transitions. [2022-12-13 20:04:45,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-13 20:04:45,699 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:04:45,699 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] [2022-12-13 20:04:45,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 20:04:45,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:04:45,900 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:04:45,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:04:45,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1241343043, now seen corresponding path program 1 times [2022-12-13 20:04:45,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:04:45,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666018102] [2022-12-13 20:04:45,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:45,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:04:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:46,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:04:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:46,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:46,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:04:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:46,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 20:04:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:46,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:46,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:46,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:46,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:04:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:46,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 20:04:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:46,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:46,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:46,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 20:04:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:46,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 20:04:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:46,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 20:04:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:46,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 20:04:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:46,557 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 20:04:46,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:04:46,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666018102] [2022-12-13 20:04:46,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666018102] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:04:46,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648928047] [2022-12-13 20:04:46,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:46,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:04:46,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:04:46,558 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:04:46,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 20:04:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:46,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 20:04:46,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:04:46,864 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 20:04:46,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:04:46,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648928047] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:04:46,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:04:46,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [16] total 22 [2022-12-13 20:04:46,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897296551] [2022-12-13 20:04:46,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:04:46,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 20:04:46,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:04:46,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 20:04:46,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2022-12-13 20:04:46,866 INFO L87 Difference]: Start difference. First operand 607 states and 967 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 6 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2022-12-13 20:04:49,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:04:49,569 INFO L93 Difference]: Finished difference Result 2009 states and 3300 transitions. [2022-12-13 20:04:49,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 20:04:49,569 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 6 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 141 [2022-12-13 20:04:49,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:04:49,577 INFO L225 Difference]: With dead ends: 2009 [2022-12-13 20:04:49,577 INFO L226 Difference]: Without dead ends: 1480 [2022-12-13 20:04:49,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 20:04:49,579 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 3021 mSDsluCounter, 2310 mSDsCounter, 0 mSdLazyCounter, 4679 mSolverCounterSat, 612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3101 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 5291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 612 IncrementalHoareTripleChecker+Valid, 4679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 20:04:49,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3101 Valid, 2824 Invalid, 5291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [612 Valid, 4679 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 20:04:49,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2022-12-13 20:04:49,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1355. [2022-12-13 20:04:49,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 1067 states have (on average 1.626991565135895) internal successors, (1736), 1108 states have internal predecessors, (1736), 214 states have call successors, (214), 58 states have call predecessors, (214), 73 states have return successors, (261), 214 states have call predecessors, (261), 209 states have call successors, (261) [2022-12-13 20:04:49,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 2211 transitions. [2022-12-13 20:04:49,970 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 2211 transitions. Word has length 141 [2022-12-13 20:04:49,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:04:49,971 INFO L495 AbstractCegarLoop]: Abstraction has 1355 states and 2211 transitions. [2022-12-13 20:04:49,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 6 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2022-12-13 20:04:49,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 2211 transitions. [2022-12-13 20:04:49,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-13 20:04:49,974 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:04:49,975 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] [2022-12-13 20:04:49,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 20:04:50,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 20:04:50,177 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:04:50,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:04:50,178 INFO L85 PathProgramCache]: Analyzing trace with hash 399170301, now seen corresponding path program 1 times [2022-12-13 20:04:50,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:04:50,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059755809] [2022-12-13 20:04:50,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:50,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:04:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:50,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:04:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:50,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:50,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:04:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:50,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 20:04:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:50,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:50,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:50,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:50,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:04:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:50,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 20:04:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:51,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:51,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:51,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:04:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:51,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:04:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:51,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 20:04:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:51,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 20:04:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:51,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 20:04:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:51,240 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 20:04:51,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:04:51,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059755809] [2022-12-13 20:04:51,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059755809] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:04:51,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828576800] [2022-12-13 20:04:51,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:51,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:04:51,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:04:51,242 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:04:51,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 20:04:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:51,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 20:04:51,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:04:51,601 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 20:04:51,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:04:51,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828576800] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:04:51,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:04:51,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [26] total 31 [2022-12-13 20:04:51,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237485972] [2022-12-13 20:04:51,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:04:51,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:04:51,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:04:51,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:04:51,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=846, Unknown=0, NotChecked=0, Total=930 [2022-12-13 20:04:51,604 INFO L87 Difference]: Start difference. First operand 1355 states and 2211 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-13 20:04:53,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:04:53,596 INFO L93 Difference]: Finished difference Result 2891 states and 4760 transitions. [2022-12-13 20:04:53,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 20:04:53,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 143 [2022-12-13 20:04:53,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:04:53,601 INFO L225 Difference]: With dead ends: 2891 [2022-12-13 20:04:53,601 INFO L226 Difference]: Without dead ends: 1614 [2022-12-13 20:04:53,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 170 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=154, Invalid=1486, Unknown=0, NotChecked=0, Total=1640 [2022-12-13 20:04:53,604 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 2190 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 3881 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2274 SdHoareTripleChecker+Valid, 2056 SdHoareTripleChecker+Invalid, 4359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 3881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:04:53,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2274 Valid, 2056 Invalid, 4359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 3881 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 20:04:53,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2022-12-13 20:04:53,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1426. [2022-12-13 20:04:53,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1119 states have (on average 1.6157283288650581) internal successors, (1808), 1166 states have internal predecessors, (1808), 222 states have call successors, (222), 63 states have call predecessors, (222), 84 states have return successors, (287), 222 states have call predecessors, (287), 217 states have call successors, (287) [2022-12-13 20:04:53,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2317 transitions. [2022-12-13 20:04:53,992 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2317 transitions. Word has length 143 [2022-12-13 20:04:53,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:04:53,993 INFO L495 AbstractCegarLoop]: Abstraction has 1426 states and 2317 transitions. [2022-12-13 20:04:53,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-13 20:04:53,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2317 transitions. [2022-12-13 20:04:53,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-12-13 20:04:53,994 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:04:53,995 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] [2022-12-13 20:04:54,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 20:04:54,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 20:04:54,197 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:04:54,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:04:54,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1095795152, now seen corresponding path program 1 times [2022-12-13 20:04:54,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:04:54,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29748106] [2022-12-13 20:04:54,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:54,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:04:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:54,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:04:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:54,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:54,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:04:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:54,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 20:04:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:54,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:54,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:54,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:54,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:04:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:54,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 20:04:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:54,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:54,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:04:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:54,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:04:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:54,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:04:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:54,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 20:04:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:54,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 20:04:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:54,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 20:04:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:54,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 20:04:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:54,734 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 20:04:54,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:04:54,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29748106] [2022-12-13 20:04:54,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29748106] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:04:54,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:04:54,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 20:04:54,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695281805] [2022-12-13 20:04:54,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:04:54,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 20:04:54,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:04:54,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 20:04:54,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:04:54,736 INFO L87 Difference]: Start difference. First operand 1426 states and 2317 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-13 20:05:22,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:05:22,946 INFO L93 Difference]: Finished difference Result 9401 states and 16655 transitions. [2022-12-13 20:05:22,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-13 20:05:22,947 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 148 [2022-12-13 20:05:22,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:05:22,992 INFO L225 Difference]: With dead ends: 9401 [2022-12-13 20:05:22,992 INFO L226 Difference]: Without dead ends: 8057 [2022-12-13 20:05:23,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 20:05:23,002 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 7860 mSDsluCounter, 2582 mSDsCounter, 0 mSdLazyCounter, 10682 mSolverCounterSat, 5856 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7910 SdHoareTripleChecker+Valid, 3403 SdHoareTripleChecker+Invalid, 16538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5856 IncrementalHoareTripleChecker+Valid, 10682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.5s IncrementalHoareTripleChecker+Time [2022-12-13 20:05:23,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7910 Valid, 3403 Invalid, 16538 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5856 Valid, 10682 Invalid, 0 Unknown, 0 Unchecked, 21.5s Time] [2022-12-13 20:05:23,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8057 states. [2022-12-13 20:05:23,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8057 to 1422. [2022-12-13 20:05:23,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1117 states have (on average 1.6150402864816473) internal successors, (1804), 1162 states have internal predecessors, (1804), 222 states have call successors, (222), 63 states have call predecessors, (222), 82 states have return successors, (278), 222 states have call predecessors, (278), 217 states have call successors, (278) [2022-12-13 20:05:23,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 2304 transitions. [2022-12-13 20:05:23,610 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 2304 transitions. Word has length 148 [2022-12-13 20:05:23,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:05:23,610 INFO L495 AbstractCegarLoop]: Abstraction has 1422 states and 2304 transitions. [2022-12-13 20:05:23,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-13 20:05:23,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 2304 transitions. [2022-12-13 20:05:23,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-12-13 20:05:23,612 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:05:23,613 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] [2022-12-13 20:05:23,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 20:05:23,613 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:05:23,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:05:23,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1149784302, now seen corresponding path program 1 times [2022-12-13 20:05:23,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:05:23,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448772151] [2022-12-13 20:05:23,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:05:23,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:05:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:23,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:05:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:23,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:23,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:05:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:23,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 20:05:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:24,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:24,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:24,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:24,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:05:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:24,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 20:05:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:24,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:24,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:24,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:05:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:24,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:05:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:24,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 20:05:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:24,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 20:05:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:24,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 20:05:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:24,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 20:05:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:24,344 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 20:05:24,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:05:24,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448772151] [2022-12-13 20:05:24,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448772151] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:05:24,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311913151] [2022-12-13 20:05:24,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:05:24,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:05:24,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:05:24,346 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:05:24,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 20:05:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:24,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 20:05:24,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:05:24,538 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 20:05:24,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:05:24,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311913151] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:05:24,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:05:24,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [21] total 24 [2022-12-13 20:05:24,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100431775] [2022-12-13 20:05:24,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:05:24,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:05:24,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:05:24,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:05:24,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2022-12-13 20:05:24,540 INFO L87 Difference]: Start difference. First operand 1422 states and 2304 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-12-13 20:05:25,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:05:25,242 INFO L93 Difference]: Finished difference Result 1521 states and 2455 transitions. [2022-12-13 20:05:25,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:05:25,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 148 [2022-12-13 20:05:25,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:05:25,247 INFO L225 Difference]: With dead ends: 1521 [2022-12-13 20:05:25,247 INFO L226 Difference]: Without dead ends: 1506 [2022-12-13 20:05:25,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-12-13 20:05:25,248 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 67 mSDsluCounter, 2731 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 3664 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:05:25,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 3664 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:05:25,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-12-13 20:05:25,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1428. [2022-12-13 20:05:25,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1123 states have (on average 1.611754229741763) internal successors, (1810), 1168 states have internal predecessors, (1810), 222 states have call successors, (222), 63 states have call predecessors, (222), 82 states have return successors, (278), 222 states have call predecessors, (278), 217 states have call successors, (278) [2022-12-13 20:05:25,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 2310 transitions. [2022-12-13 20:05:25,767 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 2310 transitions. Word has length 148 [2022-12-13 20:05:25,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:05:25,767 INFO L495 AbstractCegarLoop]: Abstraction has 1428 states and 2310 transitions. [2022-12-13 20:05:25,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-12-13 20:05:25,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 2310 transitions. [2022-12-13 20:05:25,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-12-13 20:05:25,770 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:05:25,770 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:05:25,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 20:05:25,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 20:05:25,972 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:05:25,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:05:25,973 INFO L85 PathProgramCache]: Analyzing trace with hash 2137025644, now seen corresponding path program 1 times [2022-12-13 20:05:25,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:05:25,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068573445] [2022-12-13 20:05:25,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:05:25,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:05:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:05:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:05:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 20:05:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:05:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 20:05:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:05:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:05:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 20:05:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 20:05:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 20:05:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 20:05:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 20:05:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:05:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 20:05:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:05:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 20:05:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 20:05:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 20:05:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 20:05:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,664 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 27 proven. 32 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-12-13 20:05:26,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:05:26,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068573445] [2022-12-13 20:05:26,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068573445] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:05:26,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639903825] [2022-12-13 20:05:26,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:05:26,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:05:26,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:05:26,666 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:05:26,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 20:05:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:26,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 1996 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:05:26,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:05:26,900 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-12-13 20:05:26,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:05:26,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639903825] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:05:26,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:05:26,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2022-12-13 20:05:26,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075086273] [2022-12-13 20:05:26,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:05:26,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:05:26,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:05:26,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:05:26,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:05:26,903 INFO L87 Difference]: Start difference. First operand 1428 states and 2310 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2022-12-13 20:05:27,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:05:27,961 INFO L93 Difference]: Finished difference Result 4100 states and 6732 transitions. [2022-12-13 20:05:27,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:05:27,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) Word has length 241 [2022-12-13 20:05:27,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:05:27,970 INFO L225 Difference]: With dead ends: 4100 [2022-12-13 20:05:27,970 INFO L226 Difference]: Without dead ends: 2750 [2022-12-13 20:05:27,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 299 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:05:27,973 INFO L413 NwaCegarLoop]: 1068 mSDtfsCounter, 870 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1871 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 20:05:27,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 1871 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:05:27,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2750 states. [2022-12-13 20:05:29,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2750 to 2748. [2022-12-13 20:05:29,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2748 states, 2157 states have (on average 1.6249420491423272) internal successors, (3505), 2243 states have internal predecessors, (3505), 429 states have call successors, (429), 121 states have call predecessors, (429), 161 states have return successors, (566), 435 states have call predecessors, (566), 424 states have call successors, (566) [2022-12-13 20:05:29,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2748 states to 2748 states and 4500 transitions. [2022-12-13 20:05:29,045 INFO L78 Accepts]: Start accepts. Automaton has 2748 states and 4500 transitions. Word has length 241 [2022-12-13 20:05:29,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:05:29,045 INFO L495 AbstractCegarLoop]: Abstraction has 2748 states and 4500 transitions. [2022-12-13 20:05:29,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2022-12-13 20:05:29,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2748 states and 4500 transitions. [2022-12-13 20:05:29,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-12-13 20:05:29,049 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:05:29,049 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:05:29,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 20:05:29,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 20:05:29,251 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:05:29,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:05:29,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1731810252, now seen corresponding path program 1 times [2022-12-13 20:05:29,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:05:29,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852963171] [2022-12-13 20:05:29,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:05:29,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:05:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:05:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:05:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 20:05:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:05:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 20:05:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:05:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:05:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 20:05:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 20:05:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 20:05:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 20:05:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 20:05:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:05:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 20:05:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:05:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:05:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 20:05:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 20:05:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 20:05:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:29,866 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 31 proven. 32 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-12-13 20:05:29,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:05:29,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852963171] [2022-12-13 20:05:29,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852963171] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:05:29,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922414297] [2022-12-13 20:05:29,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:05:29,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:05:29,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:05:29,868 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:05:29,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 20:05:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:30,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 1983 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:05:30,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:05:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 33 proven. 88 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-12-13 20:05:30,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:05:30,515 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-12-13 20:05:30,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922414297] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:05:30,516 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:05:30,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-12-13 20:05:30,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540730069] [2022-12-13 20:05:30,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:05:30,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 20:05:30,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:05:30,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 20:05:30,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-12-13 20:05:30,518 INFO L87 Difference]: Start difference. First operand 2748 states and 4500 transitions. Second operand has 19 states, 19 states have (on average 12.789473684210526) internal successors, (243), 15 states have internal predecessors, (243), 9 states have call successors, (52), 8 states have call predecessors, (52), 9 states have return successors, (52), 11 states have call predecessors, (52), 9 states have call successors, (52) [2022-12-13 20:06:07,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:06:07,297 INFO L93 Difference]: Finished difference Result 18563 states and 33503 transitions. [2022-12-13 20:06:07,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-12-13 20:06:07,299 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.789473684210526) internal successors, (243), 15 states have internal predecessors, (243), 9 states have call successors, (52), 8 states have call predecessors, (52), 9 states have return successors, (52), 11 states have call predecessors, (52), 9 states have call successors, (52) Word has length 239 [2022-12-13 20:06:07,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:06:07,367 INFO L225 Difference]: With dead ends: 18563 [2022-12-13 20:06:07,367 INFO L226 Difference]: Without dead ends: 15749 [2022-12-13 20:06:07,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 553 SyntacticMatches, 4 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3078 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1714, Invalid=7028, Unknown=0, NotChecked=0, Total=8742 [2022-12-13 20:06:07,396 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 9208 mSDsluCounter, 9735 mSDsCounter, 0 mSdLazyCounter, 19196 mSolverCounterSat, 5096 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9216 SdHoareTripleChecker+Valid, 10652 SdHoareTripleChecker+Invalid, 24292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5096 IncrementalHoareTripleChecker+Valid, 19196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:06:07,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9216 Valid, 10652 Invalid, 24292 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5096 Valid, 19196 Invalid, 0 Unknown, 0 Unchecked, 20.3s Time] [2022-12-13 20:06:07,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15749 states. [2022-12-13 20:06:10,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15749 to 4930. [2022-12-13 20:06:10,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4930 states, 3857 states have (on average 1.5911330049261083) internal successors, (6137), 4003 states have internal predecessors, (6137), 781 states have call successors, (781), 213 states have call predecessors, (781), 291 states have return successors, (1081), 761 states have call predecessors, (1081), 776 states have call successors, (1081) [2022-12-13 20:06:10,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4930 states to 4930 states and 7999 transitions. [2022-12-13 20:06:10,550 INFO L78 Accepts]: Start accepts. Automaton has 4930 states and 7999 transitions. Word has length 239 [2022-12-13 20:06:10,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:06:10,550 INFO L495 AbstractCegarLoop]: Abstraction has 4930 states and 7999 transitions. [2022-12-13 20:06:10,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.789473684210526) internal successors, (243), 15 states have internal predecessors, (243), 9 states have call successors, (52), 8 states have call predecessors, (52), 9 states have return successors, (52), 11 states have call predecessors, (52), 9 states have call successors, (52) [2022-12-13 20:06:10,550 INFO L276 IsEmpty]: Start isEmpty. Operand 4930 states and 7999 transitions. [2022-12-13 20:06:10,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-12-13 20:06:10,554 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:06:10,554 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 20:06:10,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 20:06:10,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 20:06:10,755 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:06:10,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:06:10,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1662512235, now seen corresponding path program 1 times [2022-12-13 20:06:10,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:06:10,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359638782] [2022-12-13 20:06:10,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:06:10,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:06:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:10,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:06:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:06:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:06:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 20:06:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:06:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:06:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:06:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:06:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 20:06:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:06:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:06:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:06:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:06:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 20:06:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 20:06:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 20:06:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 20:06:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 20:06:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:06:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:06:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:06:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:06:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 20:06:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:06:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:06:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:06:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 20:06:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 20:06:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 20:06:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,535 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 39 proven. 15 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-12-13 20:06:11,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:06:11,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359638782] [2022-12-13 20:06:11,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359638782] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:06:11,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409821890] [2022-12-13 20:06:11,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:06:11,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:06:11,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:06:11,537 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:06:11,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 20:06:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 1998 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 20:06:11,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:06:12,070 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 12 proven. 32 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-12-13 20:06:12,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:06:12,765 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 15 proven. 33 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-12-13 20:06:12,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409821890] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:06:12,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:06:12,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10, 11] total 29 [2022-12-13 20:06:12,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950780622] [2022-12-13 20:06:12,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:06:12,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 20:06:12,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:06:12,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 20:06:12,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2022-12-13 20:06:12,767 INFO L87 Difference]: Start difference. First operand 4930 states and 7999 transitions. Second operand has 29 states, 29 states have (on average 10.206896551724139) internal successors, (296), 23 states have internal predecessors, (296), 12 states have call successors, (58), 9 states have call predecessors, (58), 15 states have return successors, (60), 18 states have call predecessors, (60), 12 states have call successors, (60) [2022-12-13 20:07:56,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:07:56,677 INFO L93 Difference]: Finished difference Result 49272 states and 89747 transitions. [2022-12-13 20:07:56,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2022-12-13 20:07:56,678 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 10.206896551724139) internal successors, (296), 23 states have internal predecessors, (296), 12 states have call successors, (58), 9 states have call predecessors, (58), 15 states have return successors, (60), 18 states have call predecessors, (60), 12 states have call successors, (60) Word has length 242 [2022-12-13 20:07:56,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:07:56,907 INFO L225 Difference]: With dead ends: 49272 [2022-12-13 20:07:56,908 INFO L226 Difference]: Without dead ends: 39774 [2022-12-13 20:07:57,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 608 SyntacticMatches, 5 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33581 ImplicationChecksByTransitivity, 30.8s TimeCoverageRelationStatistics Valid=7167, Invalid=71513, Unknown=0, NotChecked=0, Total=78680 [2022-12-13 20:07:57,098 INFO L413 NwaCegarLoop]: 1798 mSDtfsCounter, 37223 mSDsluCounter, 20086 mSDsCounter, 0 mSdLazyCounter, 57382 mSolverCounterSat, 19755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37223 SdHoareTripleChecker+Valid, 21884 SdHoareTripleChecker+Invalid, 77137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 19755 IncrementalHoareTripleChecker+Valid, 57382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:07:57,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37223 Valid, 21884 Invalid, 77137 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [19755 Valid, 57382 Invalid, 0 Unknown, 0 Unchecked, 44.2s Time] [2022-12-13 20:07:57,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39774 states. [2022-12-13 20:08:15,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39774 to 32902. [2022-12-13 20:08:15,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32902 states, 25139 states have (on average 1.533593221687418) internal successors, (38553), 26175 states have internal predecessors, (38553), 5731 states have call successors, (5731), 1544 states have call predecessors, (5731), 2031 states have return successors, (9400), 5646 states have call predecessors, (9400), 5726 states have call successors, (9400) [2022-12-13 20:08:15,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32902 states to 32902 states and 53684 transitions. [2022-12-13 20:08:15,980 INFO L78 Accepts]: Start accepts. Automaton has 32902 states and 53684 transitions. Word has length 242 [2022-12-13 20:08:15,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:08:15,981 INFO L495 AbstractCegarLoop]: Abstraction has 32902 states and 53684 transitions. [2022-12-13 20:08:15,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 10.206896551724139) internal successors, (296), 23 states have internal predecessors, (296), 12 states have call successors, (58), 9 states have call predecessors, (58), 15 states have return successors, (60), 18 states have call predecessors, (60), 12 states have call successors, (60) [2022-12-13 20:08:15,981 INFO L276 IsEmpty]: Start isEmpty. Operand 32902 states and 53684 transitions. [2022-12-13 20:08:15,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-12-13 20:08:15,989 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:08:15,989 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] [2022-12-13 20:08:15,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 20:08:16,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:08:16,190 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:08:16,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:08:16,190 INFO L85 PathProgramCache]: Analyzing trace with hash 865568589, now seen corresponding path program 1 times [2022-12-13 20:08:16,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:08:16,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378085959] [2022-12-13 20:08:16,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:08:16,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:08:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:16,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:08:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:16,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:08:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:16,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:08:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:16,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 20:08:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:16,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:08:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:16,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:08:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:16,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:08:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:16,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:08:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:16,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 20:08:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:16,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:08:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:16,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:08:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:16,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:08:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:16,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:08:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:16,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 20:08:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:16,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 20:08:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:16,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 20:08:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:16,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 20:08:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:16,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 20:08:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:16,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 20:08:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:16,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 20:08:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:16,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 20:08:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:16,457 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 20:08:16,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:08:16,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378085959] [2022-12-13 20:08:16,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378085959] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:08:16,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:08:16,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:08:16,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816361909] [2022-12-13 20:08:16,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:08:16,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:08:16,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:08:16,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:08:16,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:08:16,458 INFO L87 Difference]: Start difference. First operand 32902 states and 53684 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-13 20:08:44,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:08:44,105 INFO L93 Difference]: Finished difference Result 70264 states and 116754 transitions. [2022-12-13 20:08:44,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 20:08:44,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 192 [2022-12-13 20:08:44,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:08:44,301 INFO L225 Difference]: With dead ends: 70264 [2022-12-13 20:08:44,301 INFO L226 Difference]: Without dead ends: 38518 [2022-12-13 20:08:44,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-12-13 20:08:44,392 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 1420 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 2827 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 3213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 2827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:08:44,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1940 Invalid, 3213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 2827 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-12-13 20:08:44,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38518 states. [2022-12-13 20:09:03,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38518 to 32908. [2022-12-13 20:09:03,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32908 states, 25145 states have (on average 1.5334658977928017) internal successors, (38559), 26181 states have internal predecessors, (38559), 5731 states have call successors, (5731), 1544 states have call predecessors, (5731), 2031 states have return successors, (9400), 5646 states have call predecessors, (9400), 5726 states have call successors, (9400) [2022-12-13 20:09:03,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32908 states to 32908 states and 53690 transitions. [2022-12-13 20:09:03,213 INFO L78 Accepts]: Start accepts. Automaton has 32908 states and 53690 transitions. Word has length 192 [2022-12-13 20:09:03,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:09:03,213 INFO L495 AbstractCegarLoop]: Abstraction has 32908 states and 53690 transitions. [2022-12-13 20:09:03,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-13 20:09:03,213 INFO L276 IsEmpty]: Start isEmpty. Operand 32908 states and 53690 transitions. [2022-12-13 20:09:03,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-12-13 20:09:03,222 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:09:03,222 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] [2022-12-13 20:09:03,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 20:09:03,222 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:09:03,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:09:03,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1506659609, now seen corresponding path program 1 times [2022-12-13 20:09:03,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:09:03,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701637148] [2022-12-13 20:09:03,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:09:03,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:09:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:03,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:09:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:03,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:09:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:03,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:09:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:03,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 20:09:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:03,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:09:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:03,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:09:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:03,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:09:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:03,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:09:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:03,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 20:09:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:03,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:09:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:03,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:09:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:03,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:09:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:03,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:09:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:03,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 20:09:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:03,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 20:09:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:03,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 20:09:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:03,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 20:09:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:03,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 20:09:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:03,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 20:09:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:03,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 20:09:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:03,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 20:09:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:03,546 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 20:09:03,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:09:03,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701637148] [2022-12-13 20:09:03,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701637148] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:09:03,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:09:03,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 20:09:03,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024681969] [2022-12-13 20:09:03,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:09:03,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 20:09:03,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:09:03,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 20:09:03,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:09:03,547 INFO L87 Difference]: Start difference. First operand 32908 states and 53690 transitions. Second operand has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 6 states have internal predecessors, (120), 3 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-12-13 20:09:21,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:09:21,283 INFO L93 Difference]: Finished difference Result 53858 states and 88357 transitions. [2022-12-13 20:09:21,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 20:09:21,284 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 6 states have internal predecessors, (120), 3 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 198 [2022-12-13 20:09:21,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:09:21,365 INFO L225 Difference]: With dead ends: 53858 [2022-12-13 20:09:21,365 INFO L226 Difference]: Without dead ends: 21005 [2022-12-13 20:09:21,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-13 20:09:21,444 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 1405 mSDsluCounter, 2853 mSDsCounter, 0 mSdLazyCounter, 5054 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 3356 SdHoareTripleChecker+Invalid, 5434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 5054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-13 20:09:21,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 3356 Invalid, 5434 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [380 Valid, 5054 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-12-13 20:09:21,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21005 states. [2022-12-13 20:09:31,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21005 to 18231. [2022-12-13 20:09:31,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18231 states, 14155 states have (on average 1.5263864358883787) internal successors, (21606), 14728 states have internal predecessors, (21606), 2848 states have call successors, (2848), 933 states have call predecessors, (2848), 1227 states have return successors, (4604), 2761 states have call predecessors, (4604), 2843 states have call successors, (4604) [2022-12-13 20:09:31,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18231 states to 18231 states and 29058 transitions. [2022-12-13 20:09:31,353 INFO L78 Accepts]: Start accepts. Automaton has 18231 states and 29058 transitions. Word has length 198 [2022-12-13 20:09:31,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:09:31,353 INFO L495 AbstractCegarLoop]: Abstraction has 18231 states and 29058 transitions. [2022-12-13 20:09:31,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 6 states have internal predecessors, (120), 3 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-12-13 20:09:31,353 INFO L276 IsEmpty]: Start isEmpty. Operand 18231 states and 29058 transitions. [2022-12-13 20:09:31,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-12-13 20:09:31,357 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:09:31,357 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:09:31,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 20:09:31,357 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:09:31,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:09:31,358 INFO L85 PathProgramCache]: Analyzing trace with hash 231192746, now seen corresponding path program 1 times [2022-12-13 20:09:31,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:09:31,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367357274] [2022-12-13 20:09:31,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:09:31,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:09:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:09:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:09:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:09:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 20:09:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:09:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:09:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:09:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:09:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:09:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 20:09:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:09:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:09:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 20:09:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 20:09:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 20:09:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 20:09:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 20:09:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 20:09:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 20:09:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 20:09:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 20:09:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 20:09:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-12-13 20:09:31,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:09:31,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367357274] [2022-12-13 20:09:31,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367357274] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:09:31,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:09:31,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 20:09:31,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479018289] [2022-12-13 20:09:31,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:09:31,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 20:09:31,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:09:31,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 20:09:31,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:09:31,819 INFO L87 Difference]: Start difference. First operand 18231 states and 29058 transitions. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-13 20:09:52,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:09:52,634 INFO L93 Difference]: Finished difference Result 38489 states and 64649 transitions. [2022-12-13 20:09:52,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 20:09:52,635 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 204 [2022-12-13 20:09:52,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:09:52,716 INFO L225 Difference]: With dead ends: 38489 [2022-12-13 20:09:52,717 INFO L226 Difference]: Without dead ends: 20338 [2022-12-13 20:09:52,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-12-13 20:09:52,768 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 1756 mSDsluCounter, 3046 mSDsCounter, 0 mSdLazyCounter, 5562 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1793 SdHoareTripleChecker+Valid, 3623 SdHoareTripleChecker+Invalid, 6279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 5562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:09:52,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1793 Valid, 3623 Invalid, 6279 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [717 Valid, 5562 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-12-13 20:09:52,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20338 states. [2022-12-13 20:10:01,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20338 to 15418. [2022-12-13 20:10:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15418 states, 11977 states have (on average 1.5372797862569925) internal successors, (18412), 12410 states have internal predecessors, (18412), 2473 states have call successors, (2473), 701 states have call predecessors, (2473), 967 states have return successors, (3951), 2498 states have call predecessors, (3951), 2468 states have call successors, (3951) [2022-12-13 20:10:01,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15418 states to 15418 states and 24836 transitions. [2022-12-13 20:10:01,302 INFO L78 Accepts]: Start accepts. Automaton has 15418 states and 24836 transitions. Word has length 204 [2022-12-13 20:10:01,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:10:01,302 INFO L495 AbstractCegarLoop]: Abstraction has 15418 states and 24836 transitions. [2022-12-13 20:10:01,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-13 20:10:01,303 INFO L276 IsEmpty]: Start isEmpty. Operand 15418 states and 24836 transitions. [2022-12-13 20:10:01,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-12-13 20:10:01,306 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:10:01,306 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:10:01,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 20:10:01,306 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:10:01,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:01,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1723466364, now seen corresponding path program 1 times [2022-12-13 20:10:01,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:01,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679949624] [2022-12-13 20:10:01,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:01,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:10:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:10:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 20:10:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:10:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 20:10:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 20:10:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 20:10:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 20:10:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 20:10:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 20:10:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 20:10:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 20:10:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 20:10:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 20:10:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 20:10:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:10:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 20:10:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 20:10:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 20:10:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 20:10:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 20:10:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:01,919 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-12-13 20:10:01,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:01,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679949624] [2022-12-13 20:10:01,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679949624] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:10:01,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232849558] [2022-12-13 20:10:01,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:01,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:10:01,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:10:01,921 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:10:01,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 20:10:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:02,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 2142 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:10:02,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:10:02,161 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-12-13 20:10:02,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:10:02,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232849558] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:10:02,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:10:02,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2022-12-13 20:10:02,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127218523] [2022-12-13 20:10:02,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:10:02,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:10:02,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:02,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:10:02,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-12-13 20:10:02,164 INFO L87 Difference]: Start difference. First operand 15418 states and 24836 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-12-13 20:10:10,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:10:10,809 INFO L93 Difference]: Finished difference Result 31380 states and 51040 transitions. [2022-12-13 20:10:10,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:10:10,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 281 [2022-12-13 20:10:10,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:10:10,859 INFO L225 Difference]: With dead ends: 31380 [2022-12-13 20:10:10,859 INFO L226 Difference]: Without dead ends: 16042 [2022-12-13 20:10:10,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-12-13 20:10:10,891 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 213 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2382 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 20:10:10,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 2382 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:10:10,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16042 states. [2022-12-13 20:10:19,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16042 to 16042. [2022-12-13 20:10:19,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16042 states, 12585 states have (on average 1.5558204211362734) internal successors, (19580), 13018 states have internal predecessors, (19580), 2473 states have call successors, (2473), 717 states have call predecessors, (2473), 983 states have return successors, (3951), 2498 states have call predecessors, (3951), 2468 states have call successors, (3951) [2022-12-13 20:10:19,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16042 states to 16042 states and 26004 transitions. [2022-12-13 20:10:19,367 INFO L78 Accepts]: Start accepts. Automaton has 16042 states and 26004 transitions. Word has length 281 [2022-12-13 20:10:19,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:10:19,367 INFO L495 AbstractCegarLoop]: Abstraction has 16042 states and 26004 transitions. [2022-12-13 20:10:19,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-12-13 20:10:19,368 INFO L276 IsEmpty]: Start isEmpty. Operand 16042 states and 26004 transitions. [2022-12-13 20:10:19,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-12-13 20:10:19,371 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:10:19,371 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:10:19,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 20:10:19,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-12-13 20:10:19,572 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:10:19,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:19,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1387693185, now seen corresponding path program 1 times [2022-12-13 20:10:19,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:19,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476007859] [2022-12-13 20:10:19,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:19,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:19,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:10:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:19,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:19,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:10:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:19,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 20:10:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:19,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:20,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:20,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:20,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:10:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:20,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:20,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 20:10:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:20,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:20,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:20,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 20:10:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:20,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 20:10:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:20,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 20:10:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:20,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 20:10:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:20,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 20:10:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:20,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 20:10:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:20,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 20:10:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:20,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 20:10:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:20,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-12-13 20:10:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:20,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-12-13 20:10:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:20,095 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-12-13 20:10:20,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:20,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476007859] [2022-12-13 20:10:20,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476007859] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:10:20,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:10:20,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 20:10:20,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467935629] [2022-12-13 20:10:20,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:10:20,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 20:10:20,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:20,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 20:10:20,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:10:20,096 INFO L87 Difference]: Start difference. First operand 16042 states and 26004 transitions. Second operand has 10 states, 9 states have (on average 14.444444444444445) internal successors, (130), 6 states have internal predecessors, (130), 4 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-12-13 20:10:36,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:10:36,587 INFO L93 Difference]: Finished difference Result 35550 states and 59545 transitions. [2022-12-13 20:10:36,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 20:10:36,588 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.444444444444445) internal successors, (130), 6 states have internal predecessors, (130), 4 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 211 [2022-12-13 20:10:36,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:10:36,696 INFO L225 Difference]: With dead ends: 35550 [2022-12-13 20:10:36,696 INFO L226 Difference]: Without dead ends: 18784 [2022-12-13 20:10:36,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-12-13 20:10:36,745 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 2087 mSDsluCounter, 2708 mSDsCounter, 0 mSdLazyCounter, 4425 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2154 SdHoareTripleChecker+Valid, 3186 SdHoareTripleChecker+Invalid, 4933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 4425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-13 20:10:36,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2154 Valid, 3186 Invalid, 4933 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [508 Valid, 4425 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-12-13 20:10:36,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18784 states. [2022-12-13 20:10:45,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18784 to 16042. [2022-12-13 20:10:45,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16042 states, 12585 states have (on average 1.5477155343663092) internal successors, (19478), 13018 states have internal predecessors, (19478), 2473 states have call successors, (2473), 717 states have call predecessors, (2473), 983 states have return successors, (3951), 2498 states have call predecessors, (3951), 2468 states have call successors, (3951) [2022-12-13 20:10:45,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16042 states to 16042 states and 25902 transitions. [2022-12-13 20:10:45,406 INFO L78 Accepts]: Start accepts. Automaton has 16042 states and 25902 transitions. Word has length 211 [2022-12-13 20:10:45,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:10:45,406 INFO L495 AbstractCegarLoop]: Abstraction has 16042 states and 25902 transitions. [2022-12-13 20:10:45,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.444444444444445) internal successors, (130), 6 states have internal predecessors, (130), 4 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-12-13 20:10:45,406 INFO L276 IsEmpty]: Start isEmpty. Operand 16042 states and 25902 transitions. [2022-12-13 20:10:45,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-12-13 20:10:45,409 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:10:45,410 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:10:45,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-13 20:10:45,410 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:10:45,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:45,410 INFO L85 PathProgramCache]: Analyzing trace with hash -297560668, now seen corresponding path program 1 times [2022-12-13 20:10:45,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:45,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435197545] [2022-12-13 20:10:45,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:45,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:10:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:10:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 20:10:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:10:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 20:10:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 20:10:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 20:10:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 20:10:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 20:10:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 20:10:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 20:10:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 20:10:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 20:10:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 20:10:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 20:10:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:10:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 20:10:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:10:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 20:10:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 20:10:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 20:10:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 20:10:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 20:10:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:45,964 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-12-13 20:10:45,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:45,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435197545] [2022-12-13 20:10:45,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435197545] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:10:45,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160980928] [2022-12-13 20:10:45,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:45,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:10:45,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:10:45,965 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:10:45,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 20:10:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:46,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 2164 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:10:46,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:10:46,236 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-12-13 20:10:46,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:10:46,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160980928] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:10:46,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:10:46,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2022-12-13 20:10:46,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886675047] [2022-12-13 20:10:46,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:10:46,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:10:46,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:46,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:10:46,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-12-13 20:10:46,238 INFO L87 Difference]: Start difference. First operand 16042 states and 25902 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-12-13 20:10:55,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:10:55,189 INFO L93 Difference]: Finished difference Result 32628 states and 53140 transitions. [2022-12-13 20:10:55,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:10:55,190 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), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 291 [2022-12-13 20:10:55,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:10:55,246 INFO L225 Difference]: With dead ends: 32628 [2022-12-13 20:10:55,246 INFO L226 Difference]: Without dead ends: 16666 [2022-12-13 20:10:55,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-12-13 20:10:55,304 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 211 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 2352 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 20:10:55,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 2352 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:10:55,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16666 states. [2022-12-13 20:11:03,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16666 to 16666. [2022-12-13 20:11:03,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16666 states, 13193 states have (on average 1.5649207913287349) internal successors, (20646), 13626 states have internal predecessors, (20646), 2473 states have call successors, (2473), 733 states have call predecessors, (2473), 999 states have return successors, (3951), 2498 states have call predecessors, (3951), 2468 states have call successors, (3951) [2022-12-13 20:11:03,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16666 states to 16666 states and 27070 transitions. [2022-12-13 20:11:03,764 INFO L78 Accepts]: Start accepts. Automaton has 16666 states and 27070 transitions. Word has length 291 [2022-12-13 20:11:03,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:11:03,764 INFO L495 AbstractCegarLoop]: Abstraction has 16666 states and 27070 transitions. [2022-12-13 20:11:03,764 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), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-12-13 20:11:03,764 INFO L276 IsEmpty]: Start isEmpty. Operand 16666 states and 27070 transitions. [2022-12-13 20:11:03,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-12-13 20:11:03,767 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:11:03,767 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:11:03,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 20:11:03,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-12-13 20:11:03,969 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:11:03,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:11:03,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1778861971, now seen corresponding path program 1 times [2022-12-13 20:11:03,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:11:03,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059154588] [2022-12-13 20:11:03,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:11:03,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:11:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:11:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:11:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:11:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 20:11:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:11:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:11:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:11:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:11:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:11:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 20:11:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:11:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:11:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 20:11:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 20:11:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 20:11:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 20:11:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 20:11:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 20:11:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 20:11:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 20:11:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 20:11:04,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 20:11:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-12-13 20:11:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,491 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-12-13 20:11:04,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:11:04,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059154588] [2022-12-13 20:11:04,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059154588] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:11:04,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271048026] [2022-12-13 20:11:04,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:11:04,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:11:04,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:11:04,492 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:11:04,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 20:11:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 1711 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 20:11:04,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:11:04,806 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 100 proven. 6 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-12-13 20:11:04,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:11:05,127 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-12-13 20:11:05,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271048026] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:11:05,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:11:05,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 23 [2022-12-13 20:11:05,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756157431] [2022-12-13 20:11:05,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:11:05,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 20:11:05,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:11:05,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 20:11:05,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-12-13 20:11:05,129 INFO L87 Difference]: Start difference. First operand 16666 states and 27070 transitions. Second operand has 23 states, 23 states have (on average 10.478260869565217) internal successors, (241), 16 states have internal predecessors, (241), 8 states have call successors, (51), 8 states have call predecessors, (51), 12 states have return successors, (50), 12 states have call predecessors, (50), 8 states have call successors, (50) [2022-12-13 20:12:12,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:12:12,449 INFO L93 Difference]: Finished difference Result 86772 states and 155696 transitions. [2022-12-13 20:12:12,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-12-13 20:12:12,450 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.478260869565217) internal successors, (241), 16 states have internal predecessors, (241), 8 states have call successors, (51), 8 states have call predecessors, (51), 12 states have return successors, (50), 12 states have call predecessors, (50), 8 states have call successors, (50) Word has length 216 [2022-12-13 20:12:12,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:12:13,069 INFO L225 Difference]: With dead ends: 86772 [2022-12-13 20:12:13,069 INFO L226 Difference]: Without dead ends: 70194 [2022-12-13 20:12:13,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 482 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2572 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1260, Invalid=7296, Unknown=0, NotChecked=0, Total=8556 [2022-12-13 20:12:13,216 INFO L413 NwaCegarLoop]: 1317 mSDtfsCounter, 9984 mSDsluCounter, 8410 mSDsCounter, 0 mSdLazyCounter, 20318 mSolverCounterSat, 5165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9995 SdHoareTripleChecker+Valid, 9727 SdHoareTripleChecker+Invalid, 25483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5165 IncrementalHoareTripleChecker+Valid, 20318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:12:13,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9995 Valid, 9727 Invalid, 25483 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5165 Valid, 20318 Invalid, 0 Unknown, 0 Unchecked, 19.1s Time] [2022-12-13 20:12:13,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70194 states. [2022-12-13 20:12:43,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70194 to 54940. [2022-12-13 20:12:44,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54940 states, 42887 states have (on average 1.5557161843915406) internal successors, (66720), 44309 states have internal predecessors, (66720), 8941 states have call successors, (8941), 2190 states have call predecessors, (8941), 3111 states have return successors, (16146), 9176 states have call predecessors, (16146), 8936 states have call successors, (16146) [2022-12-13 20:12:44,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54940 states to 54940 states and 91807 transitions. [2022-12-13 20:12:44,354 INFO L78 Accepts]: Start accepts. Automaton has 54940 states and 91807 transitions. Word has length 216 [2022-12-13 20:12:44,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:12:44,354 INFO L495 AbstractCegarLoop]: Abstraction has 54940 states and 91807 transitions. [2022-12-13 20:12:44,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.478260869565217) internal successors, (241), 16 states have internal predecessors, (241), 8 states have call successors, (51), 8 states have call predecessors, (51), 12 states have return successors, (50), 12 states have call predecessors, (50), 8 states have call successors, (50) [2022-12-13 20:12:44,355 INFO L276 IsEmpty]: Start isEmpty. Operand 54940 states and 91807 transitions. [2022-12-13 20:12:44,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-12-13 20:12:44,366 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:12:44,366 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:12:44,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 20:12:44,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-13 20:12:44,568 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:12:44,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:12:44,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1349889947, now seen corresponding path program 2 times [2022-12-13 20:12:44,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:12:44,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514007669] [2022-12-13 20:12:44,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:44,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:12:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:12:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:12:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:12:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 20:12:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:12:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:12:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:12:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:12:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:12:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 20:12:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:12:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:12:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 20:12:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 20:12:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 20:12:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 20:12:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 20:12:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 20:12:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 20:12:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 20:12:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 20:12:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 20:12:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-12-13 20:12:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:44,913 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 20 proven. 15 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-12-13 20:12:44,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:12:44,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514007669] [2022-12-13 20:12:44,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514007669] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:12:44,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299523361] [2022-12-13 20:12:44,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:12:44,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:12:44,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:12:44,914 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:12:44,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 20:12:45,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:12:45,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:12:45,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 1299 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 20:12:45,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:12:45,139 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-12-13 20:12:45,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:12:45,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299523361] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:12:45,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:12:45,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-13 20:12:45,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107680400] [2022-12-13 20:12:45,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:12:45,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:12:45,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:12:45,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:12:45,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-13 20:12:45,141 INFO L87 Difference]: Start difference. First operand 54940 states and 91807 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 4 states have call successors, (23), 4 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 20:14:07,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:14:07,388 INFO L93 Difference]: Finished difference Result 177715 states and 317585 transitions. [2022-12-13 20:14:07,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:14:07,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 4 states have call successors, (23), 4 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 217 [2022-12-13 20:14:07,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:14:08,327 INFO L225 Difference]: With dead ends: 177715 [2022-12-13 20:14:08,328 INFO L226 Difference]: Without dead ends: 122855 [2022-12-13 20:14:08,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:14:08,684 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 1899 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1973 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 1770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:14:08,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1973 Valid, 831 Invalid, 1770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 20:14:08,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122855 states. [2022-12-13 20:15:19,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122855 to 115974. [2022-12-13 20:15:19,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115974 states, 89310 states have (on average 1.5493897659836524) internal successors, (138376), 92824 states have internal predecessors, (138376), 20096 states have call successors, (20096), 4374 states have call predecessors, (20096), 6567 states have return successors, (43458), 20647 states have call predecessors, (43458), 20091 states have call successors, (43458) [2022-12-13 20:15:20,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115974 states to 115974 states and 201930 transitions. [2022-12-13 20:15:20,722 INFO L78 Accepts]: Start accepts. Automaton has 115974 states and 201930 transitions. Word has length 217 [2022-12-13 20:15:20,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:15:20,722 INFO L495 AbstractCegarLoop]: Abstraction has 115974 states and 201930 transitions. [2022-12-13 20:15:20,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 4 states have call successors, (23), 4 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 20:15:20,722 INFO L276 IsEmpty]: Start isEmpty. Operand 115974 states and 201930 transitions. [2022-12-13 20:15:20,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-12-13 20:15:20,739 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:15:20,739 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:15:20,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 20:15:20,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-12-13 20:15:20,941 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:15:20,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:15:20,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1102950118, now seen corresponding path program 1 times [2022-12-13 20:15:20,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:15:20,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735821591] [2022-12-13 20:15:20,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:15:20,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:15:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:15:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:15:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 20:15:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 20:15:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:15:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:15:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:15:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:15:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:15:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 20:15:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:15:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 20:15:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 20:15:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 20:15:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 20:15:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 20:15:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 20:15:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 20:15:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 20:15:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 20:15:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 20:15:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 20:15:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-12-13 20:15:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,345 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 20 proven. 15 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-12-13 20:15:21,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:15:21,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735821591] [2022-12-13 20:15:21,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735821591] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:15:21,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700797621] [2022-12-13 20:15:21,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:15:21,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:15:21,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:15:21,346 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:15:21,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850ff9f1-e7fa-4193-bd56-4d272035c216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 20:15:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:21,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:15:21,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:15:21,569 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-12-13 20:15:21,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:15:21,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700797621] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:15:21,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:15:21,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-13 20:15:21,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196761148] [2022-12-13 20:15:21,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:15:21,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:15:21,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:15:21,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:15:21,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 20:15:21,571 INFO L87 Difference]: Start difference. First operand 115974 states and 201930 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22)