./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS --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 f589c9222141e642cc5dd52da93380b476d19c138575c9f6da35a3e335e5e2df --- 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-4e7fbc6 [2022-11-23 01:42:19,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 01:42:19,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 01:42:19,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 01:42:19,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 01:42:19,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 01:42:19,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 01:42:19,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 01:42:19,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 01:42:19,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 01:42:19,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 01:42:19,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 01:42:19,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 01:42:19,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 01:42:19,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 01:42:19,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 01:42:19,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 01:42:19,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 01:42:19,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 01:42:19,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 01:42:19,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 01:42:19,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 01:42:19,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 01:42:19,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 01:42:19,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 01:42:19,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 01:42:19,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 01:42:19,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 01:42:19,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 01:42:19,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 01:42:19,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 01:42:19,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 01:42:19,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 01:42:19,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 01:42:19,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 01:42:19,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 01:42:19,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 01:42:19,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 01:42:19,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 01:42:19,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 01:42:19,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 01:42:19,614 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 01:42:19,653 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 01:42:19,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 01:42:19,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 01:42:19,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 01:42:19,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 01:42:19,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 01:42:19,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 01:42:19,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 01:42:19,656 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 01:42:19,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 01:42:19,658 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 01:42:19,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 01:42:19,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 01:42:19,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 01:42:19,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 01:42:19,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 01:42:19,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 01:42:19,659 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 01:42:19,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 01:42:19,660 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 01:42:19,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 01:42:19,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 01:42:19,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 01:42:19,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 01:42:19,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:42:19,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 01:42:19,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 01:42:19,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 01:42:19,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 01:42:19,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 01:42:19,663 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 01:42:19,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 01:42:19,663 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 01:42:19,664 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 01:42:19,664 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_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f589c9222141e642cc5dd52da93380b476d19c138575c9f6da35a3e335e5e2df [2022-11-23 01:42:19,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 01:42:19,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 01:42:19,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 01:42:19,913 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 01:42:19,913 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 01:42:19,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/product-lines/email_spec6_product33.cil.c [2022-11-23 01:42:22,900 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 01:42:23,191 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 01:42:23,191 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/sv-benchmarks/c/product-lines/email_spec6_product33.cil.c [2022-11-23 01:42:23,219 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/data/c723852b3/385bb1504ec243128d4f8e29b6512a02/FLAG7aa5f98b9 [2022-11-23 01:42:23,232 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/data/c723852b3/385bb1504ec243128d4f8e29b6512a02 [2022-11-23 01:42:23,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 01:42:23,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 01:42:23,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 01:42:23,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 01:42:23,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 01:42:23,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:42:23" (1/1) ... [2022-11-23 01:42:23,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54c7a4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:23, skipping insertion in model container [2022-11-23 01:42:23,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:42:23" (1/1) ... [2022-11-23 01:42:23,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 01:42:23,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 01:42:23,491 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_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/sv-benchmarks/c/product-lines/email_spec6_product33.cil.c[1934,1947] [2022-11-23 01:42:23,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:42:23,937 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 01:42:23,955 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_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/sv-benchmarks/c/product-lines/email_spec6_product33.cil.c[1934,1947] [2022-11-23 01:42:24,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:42:24,159 INFO L208 MainTranslator]: Completed translation [2022-11-23 01:42:24,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:24 WrapperNode [2022-11-23 01:42:24,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 01:42:24,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 01:42:24,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 01:42:24,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 01:42:24,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:24" (1/1) ... [2022-11-23 01:42:24,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:24" (1/1) ... [2022-11-23 01:42:24,338 INFO L138 Inliner]: procedures = 135, calls = 235, calls flagged for inlining = 66, calls inlined = 61, statements flattened = 1097 [2022-11-23 01:42:24,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 01:42:24,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 01:42:24,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 01:42:24,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 01:42:24,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:24" (1/1) ... [2022-11-23 01:42:24,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:24" (1/1) ... [2022-11-23 01:42:24,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:24" (1/1) ... [2022-11-23 01:42:24,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:24" (1/1) ... [2022-11-23 01:42:24,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:24" (1/1) ... [2022-11-23 01:42:24,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:24" (1/1) ... [2022-11-23 01:42:24,428 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:24" (1/1) ... [2022-11-23 01:42:24,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:24" (1/1) ... [2022-11-23 01:42:24,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 01:42:24,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 01:42:24,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 01:42:24,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 01:42:24,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:24" (1/1) ... [2022-11-23 01:42:24,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:42:24,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:42:24,512 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 01:42:24,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 01:42:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-23 01:42:24,560 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-23 01:42:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-23 01:42:24,561 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-23 01:42:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-23 01:42:24,561 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-23 01:42:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 01:42:24,561 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 01:42:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 01:42:24,561 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 01:42:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-23 01:42:24,562 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-23 01:42:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 01:42:24,562 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 01:42:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-23 01:42:24,562 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-23 01:42:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-23 01:42:24,563 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-23 01:42:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 01:42:24,563 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 01:42:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 01:42:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 01:42:24,563 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 01:42:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-23 01:42:24,564 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-23 01:42:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 01:42:24,564 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 01:42:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 01:42:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-23 01:42:24,565 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-23 01:42:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-23 01:42:24,565 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-23 01:42:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 01:42:24,566 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 01:42:24,567 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 01:42:24,567 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 01:42:24,567 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 01:42:24,567 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 01:42:24,567 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-23 01:42:24,567 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-23 01:42:24,567 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 01:42:24,568 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 01:42:24,568 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-23 01:42:24,568 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-23 01:42:24,568 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 01:42:24,568 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 01:42:24,568 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-23 01:42:24,569 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-23 01:42:24,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 01:42:24,569 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 01:42:24,569 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 01:42:24,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 01:42:24,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 01:42:24,922 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 01:42:24,924 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 01:42:25,831 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 01:42:25,842 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 01:42:25,842 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 01:42:25,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:42:25 BoogieIcfgContainer [2022-11-23 01:42:25,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 01:42:25,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 01:42:25,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 01:42:25,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 01:42:25,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:42:23" (1/3) ... [2022-11-23 01:42:25,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199691a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:42:25, skipping insertion in model container [2022-11-23 01:42:25,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:24" (2/3) ... [2022-11-23 01:42:25,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199691a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:42:25, skipping insertion in model container [2022-11-23 01:42:25,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:42:25" (3/3) ... [2022-11-23 01:42:25,858 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product33.cil.c [2022-11-23 01:42:25,887 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 01:42:25,887 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 01:42:25,952 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 01:42:25,958 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;@658dd50b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 01:42:25,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 01:42:25,967 INFO L276 IsEmpty]: Start isEmpty. Operand has 393 states, 302 states have (on average 1.4966887417218544) internal successors, (452), 306 states have internal predecessors, (452), 65 states have call successors, (65), 24 states have call predecessors, (65), 24 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-23 01:42:25,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-23 01:42:25,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:42:25,998 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:42:25,999 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:42:26,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:42:26,003 INFO L85 PathProgramCache]: Analyzing trace with hash -722514137, now seen corresponding path program 1 times [2022-11-23 01:42:26,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:42:26,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928855740] [2022-11-23 01:42:26,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:42:26,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:42:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:26,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 01:42:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:26,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:42:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:26,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:42:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:26,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 01:42:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:26,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-23 01:42:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:26,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:42:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:26,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-23 01:42:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:26,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-23 01:42:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:26,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 01:42:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:26,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-23 01:42:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:26,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-23 01:42:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:26,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-23 01:42:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:26,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-23 01:42:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:26,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-23 01:42:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:26,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-23 01:42:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:26,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-23 01:42:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:26,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-23 01:42:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:26,839 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 01:42:26,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:42:26,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928855740] [2022-11-23 01:42:26,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928855740] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:42:26,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043510537] [2022-11-23 01:42:26,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:42:26,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:42:26,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:42:26,844 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:42:26,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 01:42:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:27,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 1179 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 01:42:27,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:42:27,275 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 01:42:27,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 01:42:27,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043510537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:42:27,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 01:42:27,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-11-23 01:42:27,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460375735] [2022-11-23 01:42:27,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:42:27,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 01:42:27,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:42:27,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 01:42:27,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 01:42:27,313 INFO L87 Difference]: Start difference. First operand has 393 states, 302 states have (on average 1.4966887417218544) internal successors, (452), 306 states have internal predecessors, (452), 65 states have call successors, (65), 24 states have call predecessors, (65), 24 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:42:27,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:42:27,377 INFO L93 Difference]: Finished difference Result 627 states and 910 transitions. [2022-11-23 01:42:27,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 01:42:27,379 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 126 [2022-11-23 01:42:27,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:42:27,393 INFO L225 Difference]: With dead ends: 627 [2022-11-23 01:42:27,393 INFO L226 Difference]: Without dead ends: 386 [2022-11-23 01:42:27,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 01:42:27,401 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:42:27,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:42:27,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-11-23 01:42:27,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2022-11-23 01:42:27,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 296 states have (on average 1.489864864864865) internal successors, (441), 299 states have internal predecessors, (441), 65 states have call successors, (65), 24 states have call predecessors, (65), 24 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-23 01:42:27,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 570 transitions. [2022-11-23 01:42:27,475 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 570 transitions. Word has length 126 [2022-11-23 01:42:27,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:42:27,476 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 570 transitions. [2022-11-23 01:42:27,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:42:27,477 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 570 transitions. [2022-11-23 01:42:27,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-23 01:42:27,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:42:27,484 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:42:27,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 01:42:27,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-23 01:42:27,685 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:42:27,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:42:27,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1600743464, now seen corresponding path program 1 times [2022-11-23 01:42:27,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:42:27,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062445803] [2022-11-23 01:42:27,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:42:27,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:42:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:27,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 01:42:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:28,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:42:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:28,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:42:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:28,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 01:42:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:28,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-23 01:42:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:28,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:42:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:28,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-23 01:42:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:28,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-23 01:42:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:28,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-23 01:42:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:28,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-23 01:42:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:28,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-23 01:42:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:28,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-23 01:42:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:28,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-23 01:42:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:28,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-23 01:42:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:28,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-23 01:42:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:28,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-23 01:42:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:28,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-23 01:42:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:28,116 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 01:42:28,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:42:28,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062445803] [2022-11-23 01:42:28,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062445803] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:42:28,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987390917] [2022-11-23 01:42:28,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:42:28,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:42:28,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:42:28,123 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:42:28,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 01:42:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:28,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 01:42:28,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:42:28,531 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 01:42:28,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 01:42:28,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987390917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:42:28,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 01:42:28,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-23 01:42:28,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598102158] [2022-11-23 01:42:28,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:42:28,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:42:28,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:42:28,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:42:28,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:42:28,536 INFO L87 Difference]: Start difference. First operand 386 states and 570 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:42:28,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:42:28,605 INFO L93 Difference]: Finished difference Result 617 states and 891 transitions. [2022-11-23 01:42:28,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:42:28,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 127 [2022-11-23 01:42:28,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:42:28,614 INFO L225 Difference]: With dead ends: 617 [2022-11-23 01:42:28,614 INFO L226 Difference]: Without dead ends: 389 [2022-11-23 01:42:28,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:42:28,622 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 1 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:42:28,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1134 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:42:28,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-11-23 01:42:28,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 388. [2022-11-23 01:42:28,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 298 states have (on average 1.4865771812080537) internal successors, (443), 301 states have internal predecessors, (443), 65 states have call successors, (65), 24 states have call predecessors, (65), 24 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-23 01:42:28,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 572 transitions. [2022-11-23 01:42:28,658 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 572 transitions. Word has length 127 [2022-11-23 01:42:28,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:42:28,659 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 572 transitions. [2022-11-23 01:42:28,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:42:28,659 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 572 transitions. [2022-11-23 01:42:28,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-23 01:42:28,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:42:28,672 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-23 01:42:28,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 01:42:28,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:42:28,879 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:42:28,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:42:28,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1086346780, now seen corresponding path program 1 times [2022-11-23 01:42:28,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:42:28,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295065654] [2022-11-23 01:42:28,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:42:28,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:42:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:29,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 01:42:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:29,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:42:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:29,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:42:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:29,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 01:42:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:29,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-23 01:42:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:29,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:42:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:29,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-23 01:42:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:29,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-23 01:42:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:29,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-23 01:42:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:29,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-23 01:42:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:29,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-23 01:42:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:29,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 01:42:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:29,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 01:42:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:29,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-23 01:42:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:29,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 01:42:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:29,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-23 01:42:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:29,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-23 01:42:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-23 01:42:29,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:42:29,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295065654] [2022-11-23 01:42:29,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295065654] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:42:29,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314171699] [2022-11-23 01:42:29,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:42:29,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:42:29,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:42:29,279 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:42:29,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 01:42:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:29,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 01:42:29,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:42:29,650 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 01:42:29,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 01:42:29,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314171699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:42:29,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 01:42:29,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-23 01:42:29,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131764982] [2022-11-23 01:42:29,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:42:29,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:42:29,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:42:29,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:42:29,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:42:29,657 INFO L87 Difference]: Start difference. First operand 388 states and 572 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:42:29,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:42:29,706 INFO L93 Difference]: Finished difference Result 811 states and 1211 transitions. [2022-11-23 01:42:29,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:42:29,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2022-11-23 01:42:29,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:42:29,712 INFO L225 Difference]: With dead ends: 811 [2022-11-23 01:42:29,712 INFO L226 Difference]: Without dead ends: 450 [2022-11-23 01:42:29,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:42:29,716 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 115 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:42:29,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1108 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:42:29,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-11-23 01:42:29,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 442. [2022-11-23 01:42:29,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 341 states have (on average 1.5043988269794721) internal successors, (513), 344 states have internal predecessors, (513), 76 states have call successors, (76), 24 states have call predecessors, (76), 24 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-11-23 01:42:29,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 664 transitions. [2022-11-23 01:42:29,760 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 664 transitions. Word has length 136 [2022-11-23 01:42:29,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:42:29,761 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 664 transitions. [2022-11-23 01:42:29,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:42:29,761 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 664 transitions. [2022-11-23 01:42:29,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-23 01:42:29,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:42:29,764 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-23 01:42:29,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 01:42:29,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:42:29,971 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:42:29,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:42:29,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1017580011, now seen corresponding path program 1 times [2022-11-23 01:42:29,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:42:29,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193423656] [2022-11-23 01:42:29,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:42:29,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:42:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:30,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 01:42:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:30,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:42:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:30,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:42:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:30,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 01:42:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:30,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-23 01:42:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:30,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 01:42:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:30,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-23 01:42:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:30,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-23 01:42:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:30,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-23 01:42:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:30,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-23 01:42:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:30,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-23 01:42:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:30,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-23 01:42:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:30,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-23 01:42:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:30,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-23 01:42:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:30,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-23 01:42:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:30,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-23 01:42:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:30,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-23 01:42:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:30,278 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-23 01:42:30,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:42:30,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193423656] [2022-11-23 01:42:30,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193423656] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:42:30,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539886208] [2022-11-23 01:42:30,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:42:30,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:42:30,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:42:30,280 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:42:30,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 01:42:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:30,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 01:42:30,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:42:30,713 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 01:42:30,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 01:42:30,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539886208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:42:30,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 01:42:30,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-23 01:42:30,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750657917] [2022-11-23 01:42:30,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:42:30,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 01:42:30,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:42:30,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 01:42:30,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-23 01:42:30,716 INFO L87 Difference]: Start difference. First operand 442 states and 664 transitions. Second operand has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 01:42:30,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:42:30,796 INFO L93 Difference]: Finished difference Result 875 states and 1318 transitions. [2022-11-23 01:42:30,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 01:42:30,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 137 [2022-11-23 01:42:30,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:42:30,801 INFO L225 Difference]: With dead ends: 875 [2022-11-23 01:42:30,801 INFO L226 Difference]: Without dead ends: 444 [2022-11-23 01:42:30,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-23 01:42:30,805 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 133 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:42:30,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 2091 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:42:30,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-11-23 01:42:30,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2022-11-23 01:42:30,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 342 states have (on average 1.5029239766081872) internal successors, (514), 346 states have internal predecessors, (514), 76 states have call successors, (76), 24 states have call predecessors, (76), 25 states have return successors, (77), 75 states have call predecessors, (77), 75 states have call successors, (77) [2022-11-23 01:42:30,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 667 transitions. [2022-11-23 01:42:30,843 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 667 transitions. Word has length 137 [2022-11-23 01:42:30,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:42:30,844 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 667 transitions. [2022-11-23 01:42:30,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 01:42:30,844 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 667 transitions. [2022-11-23 01:42:30,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-23 01:42:30,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:42:30,848 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:42:30,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 01:42:31,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:42:31,056 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:42:31,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:42:31,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1744171678, now seen corresponding path program 1 times [2022-11-23 01:42:31,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:42:31,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990761152] [2022-11-23 01:42:31,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:42:31,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:42:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:31,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 01:42:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:31,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:42:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:31,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:42:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:31,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 01:42:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:31,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 01:42:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:31,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 01:42:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:31,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-23 01:42:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:31,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-23 01:42:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:31,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-23 01:42:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:31,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-23 01:42:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:31,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-23 01:42:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:31,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-23 01:42:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:31,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-23 01:42:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:31,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-23 01:42:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:31,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-23 01:42:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:31,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-23 01:42:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:31,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-23 01:42:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:31,394 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-23 01:42:31,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:42:31,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990761152] [2022-11-23 01:42:31,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990761152] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:42:31,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591658872] [2022-11-23 01:42:31,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:42:31,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:42:31,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:42:31,397 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:42:31,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 01:42:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:31,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 01:42:31,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:42:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 01:42:31,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 01:42:31,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591658872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:42:31,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 01:42:31,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-11-23 01:42:31,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923567230] [2022-11-23 01:42:31,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:42:31,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 01:42:31,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:42:31,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 01:42:31,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-23 01:42:31,820 INFO L87 Difference]: Start difference. First operand 444 states and 667 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 01:42:31,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:42:31,902 INFO L93 Difference]: Finished difference Result 877 states and 1323 transitions. [2022-11-23 01:42:31,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 01:42:31,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 138 [2022-11-23 01:42:31,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:42:31,905 INFO L225 Difference]: With dead ends: 877 [2022-11-23 01:42:31,905 INFO L226 Difference]: Without dead ends: 446 [2022-11-23 01:42:31,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-23 01:42:31,907 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 132 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:42:31,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 2080 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:42:31,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-11-23 01:42:31,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2022-11-23 01:42:31,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 343 states have (on average 1.501457725947522) internal successors, (515), 348 states have internal predecessors, (515), 76 states have call successors, (76), 24 states have call predecessors, (76), 26 states have return successors, (82), 75 states have call predecessors, (82), 75 states have call successors, (82) [2022-11-23 01:42:31,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 673 transitions. [2022-11-23 01:42:31,929 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 673 transitions. Word has length 138 [2022-11-23 01:42:31,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:42:31,929 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 673 transitions. [2022-11-23 01:42:31,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 01:42:31,929 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 673 transitions. [2022-11-23 01:42:31,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-23 01:42:31,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:42:31,932 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-23 01:42:31,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 01:42:32,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:42:32,149 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:42:32,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:42:32,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2120382922, now seen corresponding path program 1 times [2022-11-23 01:42:32,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:42:32,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755300267] [2022-11-23 01:42:32,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:42:32,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:42:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:32,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 01:42:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:32,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:42:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:32,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:42:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:32,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 01:42:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:32,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 01:42:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:32,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-23 01:42:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:32,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-23 01:42:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:32,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-23 01:42:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:32,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-23 01:42:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:32,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-23 01:42:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:32,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-23 01:42:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:32,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-23 01:42:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:32,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-23 01:42:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:32,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-23 01:42:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:32,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-23 01:42:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:32,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-23 01:42:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:32,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-23 01:42:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:32,442 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-23 01:42:32,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:42:32,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755300267] [2022-11-23 01:42:32,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755300267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:42:32,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:42:32,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 01:42:32,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202871283] [2022-11-23 01:42:32,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:42:32,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 01:42:32,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:42:32,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 01:42:32,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 01:42:32,446 INFO L87 Difference]: Start difference. First operand 446 states and 673 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 01:42:35,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:42:35,602 INFO L93 Difference]: Finished difference Result 1088 states and 1651 transitions. [2022-11-23 01:42:35,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 01:42:35,602 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 139 [2022-11-23 01:42:35,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:42:35,607 INFO L225 Difference]: With dead ends: 1088 [2022-11-23 01:42:35,607 INFO L226 Difference]: Without dead ends: 665 [2022-11-23 01:42:35,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-23 01:42:35,610 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 1407 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 3220 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 3809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 3220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-23 01:42:35,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1424 Valid, 1044 Invalid, 3809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 3220 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-23 01:42:35,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-11-23 01:42:35,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 446. [2022-11-23 01:42:35,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 343 states have (on average 1.501457725947522) internal successors, (515), 348 states have internal predecessors, (515), 76 states have call successors, (76), 24 states have call predecessors, (76), 26 states have return successors, (81), 75 states have call predecessors, (81), 75 states have call successors, (81) [2022-11-23 01:42:35,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 672 transitions. [2022-11-23 01:42:35,670 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 672 transitions. Word has length 139 [2022-11-23 01:42:35,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:42:35,671 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 672 transitions. [2022-11-23 01:42:35,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 01:42:35,671 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 672 transitions. [2022-11-23 01:42:35,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-23 01:42:35,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:42:35,674 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:42:35,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 01:42:35,675 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:42:35,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:42:35,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1634749281, now seen corresponding path program 2 times [2022-11-23 01:42:35,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:42:35,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320520062] [2022-11-23 01:42:35,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:42:35,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:42:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:35,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 01:42:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:35,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:42:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:35,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:42:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:35,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 01:42:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:35,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 01:42:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:35,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:42:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:35,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 01:42:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:35,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-23 01:42:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:35,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-23 01:42:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:35,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-23 01:42:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:35,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-23 01:42:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:35,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-23 01:42:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:35,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-23 01:42:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:35,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-23 01:42:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:35,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-23 01:42:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:35,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-23 01:42:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:35,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-23 01:42:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:35,948 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-23 01:42:35,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:42:35,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320520062] [2022-11-23 01:42:35,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320520062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:42:35,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:42:35,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 01:42:35,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229614979] [2022-11-23 01:42:35,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:42:35,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 01:42:35,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:42:35,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 01:42:35,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 01:42:35,951 INFO L87 Difference]: Start difference. First operand 446 states and 672 transitions. Second operand has 9 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 01:42:39,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:42:39,063 INFO L93 Difference]: Finished difference Result 1090 states and 1654 transitions. [2022-11-23 01:42:39,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 01:42:39,064 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 140 [2022-11-23 01:42:39,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:42:39,068 INFO L225 Difference]: With dead ends: 1090 [2022-11-23 01:42:39,068 INFO L226 Difference]: Without dead ends: 667 [2022-11-23 01:42:39,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-23 01:42:39,071 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 1402 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 3213 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 3811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 3213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-23 01:42:39,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1420 Valid, 1044 Invalid, 3811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 3213 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-23 01:42:39,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-11-23 01:42:39,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 448. [2022-11-23 01:42:39,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 344 states have (on average 1.5) internal successors, (516), 350 states have internal predecessors, (516), 76 states have call successors, (76), 24 states have call predecessors, (76), 27 states have return successors, (83), 75 states have call predecessors, (83), 75 states have call successors, (83) [2022-11-23 01:42:39,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 675 transitions. [2022-11-23 01:42:39,118 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 675 transitions. Word has length 140 [2022-11-23 01:42:39,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:42:39,119 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 675 transitions. [2022-11-23 01:42:39,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 01:42:39,119 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 675 transitions. [2022-11-23 01:42:39,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-23 01:42:39,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:42:39,122 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-23 01:42:39,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 01:42:39,122 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:42:39,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:42:39,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1665185423, now seen corresponding path program 1 times [2022-11-23 01:42:39,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:42:39,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331775380] [2022-11-23 01:42:39,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:42:39,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:42:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:39,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 01:42:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:39,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:42:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:39,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:42:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:39,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 01:42:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:39,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 01:42:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:39,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 01:42:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:39,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-23 01:42:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:39,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 01:42:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:39,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-23 01:42:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:39,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-23 01:42:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:39,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-23 01:42:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:39,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-23 01:42:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:39,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-23 01:42:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:39,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-23 01:42:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:39,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-23 01:42:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:39,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-23 01:42:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:39,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-23 01:42:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:39,422 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-23 01:42:39,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:42:39,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331775380] [2022-11-23 01:42:39,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331775380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:42:39,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:42:39,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 01:42:39,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567578735] [2022-11-23 01:42:39,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:42:39,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 01:42:39,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:42:39,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 01:42:39,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 01:42:39,424 INFO L87 Difference]: Start difference. First operand 448 states and 675 transitions. Second operand has 9 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 01:42:42,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:42:42,461 INFO L93 Difference]: Finished difference Result 1090 states and 1653 transitions. [2022-11-23 01:42:42,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 01:42:42,462 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 141 [2022-11-23 01:42:42,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:42:42,466 INFO L225 Difference]: With dead ends: 1090 [2022-11-23 01:42:42,466 INFO L226 Difference]: Without dead ends: 667 [2022-11-23 01:42:42,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-11-23 01:42:42,469 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 1405 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 3205 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 3800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 3205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-23 01:42:42,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1422 Valid, 1044 Invalid, 3800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 3205 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-23 01:42:42,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-11-23 01:42:42,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 448. [2022-11-23 01:42:42,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 344 states have (on average 1.5) internal successors, (516), 350 states have internal predecessors, (516), 76 states have call successors, (76), 24 states have call predecessors, (76), 27 states have return successors, (83), 75 states have call predecessors, (83), 75 states have call successors, (83) [2022-11-23 01:42:42,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 675 transitions. [2022-11-23 01:42:42,519 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 675 transitions. Word has length 141 [2022-11-23 01:42:42,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:42:42,519 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 675 transitions. [2022-11-23 01:42:42,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 01:42:42,520 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 675 transitions. [2022-11-23 01:42:42,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-23 01:42:42,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:42:42,523 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-23 01:42:42,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 01:42:42,523 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:42:42,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:42:42,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1783626897, now seen corresponding path program 1 times [2022-11-23 01:42:42,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:42:42,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297391875] [2022-11-23 01:42:42,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:42:42,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:42:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:42,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 01:42:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:42,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:42:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:42,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:42:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:42,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 01:42:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:42,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 01:42:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:42,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 01:42:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:42,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-23 01:42:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:42,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 01:42:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:42,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-23 01:42:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:42,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-23 01:42:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:42,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-23 01:42:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:42,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-23 01:42:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:42,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-23 01:42:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:42,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-23 01:42:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:42,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-23 01:42:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:42,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-23 01:42:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:42,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-23 01:42:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:42,813 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-23 01:42:42,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:42:42,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297391875] [2022-11-23 01:42:42,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297391875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:42:42,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:42:42,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 01:42:42,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189006534] [2022-11-23 01:42:42,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:42:42,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 01:42:42,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:42:42,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 01:42:42,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-23 01:42:42,817 INFO L87 Difference]: Start difference. First operand 448 states and 675 transitions. Second operand has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-23 01:42:46,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:42:46,758 INFO L93 Difference]: Finished difference Result 1088 states and 1648 transitions. [2022-11-23 01:42:46,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 01:42:46,759 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 141 [2022-11-23 01:42:46,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:42:46,764 INFO L225 Difference]: With dead ends: 1088 [2022-11-23 01:42:46,764 INFO L226 Difference]: Without dead ends: 667 [2022-11-23 01:42:46,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-23 01:42:46,768 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1534 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 5334 mSolverCounterSat, 631 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 5965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 631 IncrementalHoareTripleChecker+Valid, 5334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-23 01:42:46,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 1362 Invalid, 5965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [631 Valid, 5334 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-23 01:42:46,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-11-23 01:42:46,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 448. [2022-11-23 01:42:46,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 344 states have (on average 1.5) internal successors, (516), 350 states have internal predecessors, (516), 76 states have call successors, (76), 24 states have call predecessors, (76), 27 states have return successors, (82), 75 states have call predecessors, (82), 75 states have call successors, (82) [2022-11-23 01:42:46,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 674 transitions. [2022-11-23 01:42:46,835 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 674 transitions. Word has length 141 [2022-11-23 01:42:46,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:42:46,837 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 674 transitions. [2022-11-23 01:42:46,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-23 01:42:46,837 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 674 transitions. [2022-11-23 01:42:46,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-23 01:42:46,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:42:46,859 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:42:46,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 01:42:46,859 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:42:46,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:42:46,861 INFO L85 PathProgramCache]: Analyzing trace with hash -8261163, now seen corresponding path program 2 times [2022-11-23 01:42:46,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:42:46,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49653857] [2022-11-23 01:42:46,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:42:46,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:42:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:47,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 01:42:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:47,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:42:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:47,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:42:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:47,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 01:42:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:47,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 01:42:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:47,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 01:42:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:47,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-23 01:42:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:47,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 01:42:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:47,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-23 01:42:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:47,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-23 01:42:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:47,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-23 01:42:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:47,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 01:42:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:47,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-23 01:42:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:47,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-23 01:42:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:47,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-23 01:42:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:47,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-23 01:42:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:47,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-23 01:42:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:47,217 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-23 01:42:47,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:42:47,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49653857] [2022-11-23 01:42:47,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49653857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:42:47,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:42:47,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 01:42:47,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937639177] [2022-11-23 01:42:47,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:42:47,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 01:42:47,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:42:47,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 01:42:47,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-23 01:42:47,220 INFO L87 Difference]: Start difference. First operand 448 states and 674 transitions. Second operand has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-23 01:42:51,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:42:51,179 INFO L93 Difference]: Finished difference Result 1090 states and 1654 transitions. [2022-11-23 01:42:51,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 01:42:51,179 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 142 [2022-11-23 01:42:51,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:42:51,184 INFO L225 Difference]: With dead ends: 1090 [2022-11-23 01:42:51,184 INFO L226 Difference]: Without dead ends: 669 [2022-11-23 01:42:51,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-23 01:42:51,187 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1529 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 5359 mSolverCounterSat, 632 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 5991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 632 IncrementalHoareTripleChecker+Valid, 5359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-23 01:42:51,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 1362 Invalid, 5991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [632 Valid, 5359 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-23 01:42:51,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-11-23 01:42:51,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 450. [2022-11-23 01:42:51,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 345 states have (on average 1.4985507246376812) internal successors, (517), 352 states have internal predecessors, (517), 76 states have call successors, (76), 24 states have call predecessors, (76), 28 states have return successors, (87), 75 states have call predecessors, (87), 75 states have call successors, (87) [2022-11-23 01:42:51,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 680 transitions. [2022-11-23 01:42:51,246 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 680 transitions. Word has length 142 [2022-11-23 01:42:51,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:42:51,246 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 680 transitions. [2022-11-23 01:42:51,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-23 01:42:51,247 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 680 transitions. [2022-11-23 01:42:51,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-23 01:42:51,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:42:51,250 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:42:51,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 01:42:51,250 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:42:51,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:42:51,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1771103988, now seen corresponding path program 1 times [2022-11-23 01:42:51,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:42:51,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108545435] [2022-11-23 01:42:51,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:42:51,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:42:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:51,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 01:42:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:51,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:42:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:51,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:42:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:51,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 01:42:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:51,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 01:42:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:51,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 01:42:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:51,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-23 01:42:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:51,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-23 01:42:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:51,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-23 01:42:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:51,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-23 01:42:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:51,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-23 01:42:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:51,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-23 01:42:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:51,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-23 01:42:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:51,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 01:42:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:51,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-23 01:42:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:51,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-23 01:42:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:51,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-23 01:42:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:51,551 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-23 01:42:51,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:42:51,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108545435] [2022-11-23 01:42:51,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108545435] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:42:51,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117337730] [2022-11-23 01:42:51,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:42:51,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:42:51,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:42:51,554 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:42:51,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 01:42:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:51,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 01:42:51,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:42:51,983 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-23 01:42:51,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:42:52,083 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-23 01:42:52,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117337730] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:42:52,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:42:52,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-11-23 01:42:52,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810356025] [2022-11-23 01:42:52,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:42:52,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 01:42:52,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:42:52,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 01:42:52,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-23 01:42:52,116 INFO L87 Difference]: Start difference. First operand 450 states and 680 transitions. Second operand has 15 states, 14 states have (on average 10.857142857142858) internal successors, (152), 11 states have internal predecessors, (152), 4 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2022-11-23 01:42:57,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:42:57,434 INFO L93 Difference]: Finished difference Result 1819 states and 2962 transitions. [2022-11-23 01:42:57,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 01:42:57,434 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 10.857142857142858) internal successors, (152), 11 states have internal predecessors, (152), 4 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) Word has length 143 [2022-11-23 01:42:57,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:42:57,445 INFO L225 Difference]: With dead ends: 1819 [2022-11-23 01:42:57,445 INFO L226 Difference]: Without dead ends: 1400 [2022-11-23 01:42:57,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-11-23 01:42:57,450 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 3833 mSDsluCounter, 2794 mSDsCounter, 0 mSdLazyCounter, 6667 mSolverCounterSat, 1462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3835 SdHoareTripleChecker+Valid, 3145 SdHoareTripleChecker+Invalid, 8129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1462 IncrementalHoareTripleChecker+Valid, 6667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-23 01:42:57,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3835 Valid, 3145 Invalid, 8129 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1462 Valid, 6667 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-23 01:42:57,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2022-11-23 01:42:57,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 803. [2022-11-23 01:42:57,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 634 states have (on average 1.5583596214511042) internal successors, (988), 641 states have internal predecessors, (988), 140 states have call successors, (140), 24 states have call predecessors, (140), 28 states have return successors, (161), 139 states have call predecessors, (161), 139 states have call successors, (161) [2022-11-23 01:42:57,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1289 transitions. [2022-11-23 01:42:57,567 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1289 transitions. Word has length 143 [2022-11-23 01:42:57,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:42:57,567 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1289 transitions. [2022-11-23 01:42:57,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 10.857142857142858) internal successors, (152), 11 states have internal predecessors, (152), 4 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2022-11-23 01:42:57,568 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1289 transitions. [2022-11-23 01:42:57,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-23 01:42:57,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:42:57,573 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:42:57,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 01:42:57,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3320eda-0c65-4739-bbba-1b8f9c5cdbae/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 01:42:57,796 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:42:57,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:42:57,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1855806362, now seen corresponding path program 1 times [2022-11-23 01:42:57,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:42:57,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381539698] [2022-11-23 01:42:57,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:42:57,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:42:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:57,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 01:42:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:57,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:42:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:57,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:42:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:57,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 01:42:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:57,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 01:42:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:57,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 01:42:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:57,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 01:42:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:57,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-23 01:42:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:57,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-23 01:42:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:57,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-23 01:42:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:57,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-23 01:42:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:57,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-23 01:42:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:57,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-23 01:42:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:57,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-23 01:42:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:57,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-23 01:42:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:57,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-23 01:42:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:57,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-23 01:42:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:57,942 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-23 01:42:57,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:42:57,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381539698] [2022-11-23 01:42:57,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381539698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:42:57,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:42:57,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:42:57,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351121059] [2022-11-23 01:42:57,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:42:57,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:42:57,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:42:57,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:42:57,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:42:57,945 INFO L87 Difference]: Start difference. First operand 803 states and 1289 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:43:00,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:43:00,461 INFO L93 Difference]: Finished difference Result 2080 states and 3405 transitions. [2022-11-23 01:43:00,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 01:43:00,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2022-11-23 01:43:00,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:43:00,471 INFO L225 Difference]: With dead ends: 2080 [2022-11-23 01:43:00,471 INFO L226 Difference]: Without dead ends: 1355 [2022-11-23 01:43:00,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-23 01:43:00,475 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 1385 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1918 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 2563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 1918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:43:00,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1400 Valid, 887 Invalid, 2563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 1918 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-23 01:43:00,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2022-11-23 01:43:00,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1128. [2022-11-23 01:43:00,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 895 states have (on average 1.5787709497206703) internal successors, (1413), 902 states have internal predecessors, (1413), 204 states have call successors, (204), 24 states have call predecessors, (204), 28 states have return successors, (235), 203 states have call predecessors, (235), 203 states have call successors, (235) [2022-11-23 01:43:00,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1852 transitions. [2022-11-23 01:43:00,628 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1852 transitions. Word has length 146 [2022-11-23 01:43:00,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:43:00,628 INFO L495 AbstractCegarLoop]: Abstraction has 1128 states and 1852 transitions. [2022-11-23 01:43:00,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:43:00,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1852 transitions. [2022-11-23 01:43:00,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-23 01:43:00,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:43:00,636 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:43:00,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 01:43:00,636 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:43:00,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:43:00,637 INFO L85 PathProgramCache]: Analyzing trace with hash -995460552, now seen corresponding path program 1 times [2022-11-23 01:43:00,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:43:00,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051039766] [2022-11-23 01:43:00,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:43:00,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:43:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:00,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 01:43:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:00,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:43:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:00,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:43:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:00,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 01:43:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:00,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 01:43:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:00,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 01:43:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:00,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 01:43:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:00,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-23 01:43:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:00,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-23 01:43:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:00,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-23 01:43:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:00,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 01:43:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:00,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-23 01:43:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:00,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-23 01:43:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:00,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-23 01:43:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:00,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-23 01:43:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:00,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-23 01:43:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:00,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-23 01:43:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:00,780 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-23 01:43:00,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:43:00,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051039766] [2022-11-23 01:43:00,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051039766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:43:00,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:43:00,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:43:00,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699115484] [2022-11-23 01:43:00,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:43:00,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:43:00,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:43:00,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:43:00,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:43:00,783 INFO L87 Difference]: Start difference. First operand 1128 states and 1852 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:43:03,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:43:03,346 INFO L93 Difference]: Finished difference Result 2885 states and 4789 transitions. [2022-11-23 01:43:03,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 01:43:03,347 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2022-11-23 01:43:03,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:43:03,358 INFO L225 Difference]: With dead ends: 2885 [2022-11-23 01:43:03,359 INFO L226 Difference]: Without dead ends: 1888 [2022-11-23 01:43:03,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-23 01:43:03,364 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 1383 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 2550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:43:03,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 875 Invalid, 2550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-23 01:43:03,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2022-11-23 01:43:03,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1661. [2022-11-23 01:43:03,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1333 states have (on average 1.5896474118529633) internal successors, (2119), 1340 states have internal predecessors, (2119), 299 states have call successors, (299), 24 states have call predecessors, (299), 28 states have return successors, (330), 298 states have call predecessors, (330), 298 states have call successors, (330) [2022-11-23 01:43:03,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2748 transitions. [2022-11-23 01:43:03,615 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2748 transitions. Word has length 147 [2022-11-23 01:43:03,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:43:03,616 INFO L495 AbstractCegarLoop]: Abstraction has 1661 states and 2748 transitions. [2022-11-23 01:43:03,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:43:03,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2748 transitions. [2022-11-23 01:43:03,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-23 01:43:03,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:43:03,627 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:43:03,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 01:43:03,627 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:43:03,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:43:03,628 INFO L85 PathProgramCache]: Analyzing trace with hash -158490932, now seen corresponding path program 1 times [2022-11-23 01:43:03,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:43:03,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333792027] [2022-11-23 01:43:03,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:43:03,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:43:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:03,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 01:43:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:03,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:43:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:03,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:43:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:03,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 01:43:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:03,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 01:43:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:03,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 01:43:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:03,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-23 01:43:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:03,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-23 01:43:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:03,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-23 01:43:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:03,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-23 01:43:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:03,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-23 01:43:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:03,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-23 01:43:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:03,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-23 01:43:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:03,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-23 01:43:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:03,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-23 01:43:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:03,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-23 01:43:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:03,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-23 01:43:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:03,777 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-23 01:43:03,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:43:03,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333792027] [2022-11-23 01:43:03,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333792027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:43:03,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:43:03,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:43:03,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044682416] [2022-11-23 01:43:03,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:43:03,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:43:03,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:43:03,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:43:03,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:43:03,780 INFO L87 Difference]: Start difference. First operand 1661 states and 2748 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:43:06,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:43:06,375 INFO L93 Difference]: Finished difference Result 4092 states and 6875 transitions. [2022-11-23 01:43:06,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 01:43:06,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 148 [2022-11-23 01:43:06,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:43:06,389 INFO L225 Difference]: With dead ends: 4092 [2022-11-23 01:43:06,390 INFO L226 Difference]: Without dead ends: 2697 [2022-11-23 01:43:06,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-23 01:43:06,395 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 1381 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1903 mSolverCounterSat, 641 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 641 IncrementalHoareTripleChecker+Valid, 1903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:43:06,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1396 Valid, 870 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [641 Valid, 1903 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-23 01:43:06,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2697 states. [2022-11-23 01:43:06,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2697 to 2470. [2022-11-23 01:43:06,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2470 states, 2019 states have (on average 1.5978207033184746) internal successors, (3226), 2026 states have internal predecessors, (3226), 422 states have call successors, (422), 24 states have call predecessors, (422), 28 states have return successors, (469), 421 states have call predecessors, (469), 421 states have call successors, (469) [2022-11-23 01:43:06,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 4117 transitions. [2022-11-23 01:43:06,779 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 4117 transitions. Word has length 148 [2022-11-23 01:43:06,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:43:06,780 INFO L495 AbstractCegarLoop]: Abstraction has 2470 states and 4117 transitions. [2022-11-23 01:43:06,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:43:06,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 4117 transitions. [2022-11-23 01:43:06,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-23 01:43:06,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:43:06,796 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:43:06,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 01:43:06,797 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:43:06,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:43:06,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1156685385, now seen corresponding path program 1 times [2022-11-23 01:43:06,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:43:06,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019650393] [2022-11-23 01:43:06,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:43:06,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:43:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:06,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 01:43:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:06,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:43:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:06,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:43:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:06,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 01:43:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:06,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 01:43:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:06,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 01:43:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:06,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-23 01:43:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:06,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-23 01:43:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:06,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-23 01:43:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:06,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-23 01:43:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:06,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-23 01:43:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:06,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-23 01:43:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:06,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-23 01:43:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:06,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-23 01:43:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:06,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-23 01:43:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:06,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-23 01:43:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:06,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-23 01:43:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:06,964 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-23 01:43:06,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:43:06,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019650393] [2022-11-23 01:43:06,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019650393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:43:06,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:43:06,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:43:06,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38379137] [2022-11-23 01:43:06,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:43:06,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:43:06,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:43:06,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:43:06,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:43:06,967 INFO L87 Difference]: Start difference. First operand 2470 states and 4117 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:43:09,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:43:09,662 INFO L93 Difference]: Finished difference Result 5976 states and 10135 transitions. [2022-11-23 01:43:09,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 01:43:09,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 149 [2022-11-23 01:43:09,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:43:09,688 INFO L225 Difference]: With dead ends: 5976 [2022-11-23 01:43:09,688 INFO L226 Difference]: Without dead ends: 3991 [2022-11-23 01:43:09,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-23 01:43:09,695 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 1379 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1886 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 2536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 1886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:43:09,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 868 Invalid, 2536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 1886 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-23 01:43:09,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3991 states. [2022-11-23 01:43:10,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3991 to 3764. [2022-11-23 01:43:10,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3134 states have (on average 1.603063178047224) internal successors, (5024), 3141 states have internal predecessors, (5024), 601 states have call successors, (601), 24 states have call predecessors, (601), 28 states have return successors, (674), 600 states have call predecessors, (674), 600 states have call successors, (674) [2022-11-23 01:43:10,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 6299 transitions. [2022-11-23 01:43:10,218 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 6299 transitions. Word has length 149 [2022-11-23 01:43:10,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:43:10,219 INFO L495 AbstractCegarLoop]: Abstraction has 3764 states and 6299 transitions. [2022-11-23 01:43:10,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:43:10,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 6299 transitions. [2022-11-23 01:43:10,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-23 01:43:10,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:43:10,238 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:43:10,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 01:43:10,238 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:43:10,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:43:10,239 INFO L85 PathProgramCache]: Analyzing trace with hash 695739792, now seen corresponding path program 1 times [2022-11-23 01:43:10,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:43:10,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663865332] [2022-11-23 01:43:10,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:43:10,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:43:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:10,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 01:43:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:10,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:43:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:10,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:43:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:10,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 01:43:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:10,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 01:43:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:10,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 01:43:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:10,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-23 01:43:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:10,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-23 01:43:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:10,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-23 01:43:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:10,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-23 01:43:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:10,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-23 01:43:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:10,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-23 01:43:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:10,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 01:43:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:10,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-23 01:43:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:10,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-23 01:43:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:10,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-23 01:43:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:10,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-23 01:43:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:10,411 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-23 01:43:10,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:43:10,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663865332] [2022-11-23 01:43:10,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663865332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:43:10,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:43:10,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:43:10,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510736922] [2022-11-23 01:43:10,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:43:10,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:43:10,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:43:10,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:43:10,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:43:10,413 INFO L87 Difference]: Start difference. First operand 3764 states and 6299 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:43:13,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:43:13,219 INFO L93 Difference]: Finished difference Result 9079 states and 15499 transitions. [2022-11-23 01:43:13,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 01:43:13,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 150 [2022-11-23 01:43:13,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:43:13,250 INFO L225 Difference]: With dead ends: 9079 [2022-11-23 01:43:13,251 INFO L226 Difference]: Without dead ends: 6132 [2022-11-23 01:43:13,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-23 01:43:13,262 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 1377 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1911 mSolverCounterSat, 654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 2565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 654 IncrementalHoareTripleChecker+Valid, 1911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:43:13,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1392 Valid, 891 Invalid, 2565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [654 Valid, 1911 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-23 01:43:13,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6132 states. [2022-11-23 01:43:14,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6132 to 5905. [2022-11-23 01:43:14,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5905 states, 4899 states have (on average 1.5982853643600734) internal successors, (7830), 4906 states have internal predecessors, (7830), 977 states have call successors, (977), 24 states have call predecessors, (977), 28 states have return successors, (1094), 976 states have call predecessors, (1094), 976 states have call successors, (1094) [2022-11-23 01:43:14,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5905 states to 5905 states and 9901 transitions. [2022-11-23 01:43:14,032 INFO L78 Accepts]: Start accepts. Automaton has 5905 states and 9901 transitions. Word has length 150 [2022-11-23 01:43:14,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:43:14,033 INFO L495 AbstractCegarLoop]: Abstraction has 5905 states and 9901 transitions. [2022-11-23 01:43:14,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:43:14,033 INFO L276 IsEmpty]: Start isEmpty. Operand 5905 states and 9901 transitions. [2022-11-23 01:43:14,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-23 01:43:14,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:43:14,061 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:43:14,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 01:43:14,061 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:43:14,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:43:14,062 INFO L85 PathProgramCache]: Analyzing trace with hash -812124429, now seen corresponding path program 1 times [2022-11-23 01:43:14,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:43:14,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375829338] [2022-11-23 01:43:14,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:43:14,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:43:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:14,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 01:43:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:14,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:43:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:14,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:43:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:14,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 01:43:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:14,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 01:43:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:14,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 01:43:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:14,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-23 01:43:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:14,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-23 01:43:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:14,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-23 01:43:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:14,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-23 01:43:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:14,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-23 01:43:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:14,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-23 01:43:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:14,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-23 01:43:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:14,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-23 01:43:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:14,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-23 01:43:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:14,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-23 01:43:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:14,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-23 01:43:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:14,194 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-23 01:43:14,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:43:14,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375829338] [2022-11-23 01:43:14,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375829338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:43:14,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:43:14,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:43:14,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007703800] [2022-11-23 01:43:14,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:43:14,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:43:14,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:43:14,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:43:14,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:43:14,198 INFO L87 Difference]: Start difference. First operand 5905 states and 9901 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:43:17,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:43:17,393 INFO L93 Difference]: Finished difference Result 14696 states and 25112 transitions. [2022-11-23 01:43:17,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 01:43:17,393 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 151 [2022-11-23 01:43:17,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:43:17,435 INFO L225 Difference]: With dead ends: 14696 [2022-11-23 01:43:17,435 INFO L226 Difference]: Without dead ends: 10010 [2022-11-23 01:43:17,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-23 01:43:17,449 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 1375 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1900 mSolverCounterSat, 654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 2554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 654 IncrementalHoareTripleChecker+Valid, 1900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-23 01:43:17,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1390 Valid, 871 Invalid, 2554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [654 Valid, 1900 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-23 01:43:17,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10010 states. [2022-11-23 01:43:18,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10010 to 9783. [2022-11-23 01:43:18,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9783 states, 8171 states have (on average 1.5969893525884225) internal successors, (13049), 8178 states have internal predecessors, (13049), 1583 states have call successors, (1583), 24 states have call predecessors, (1583), 28 states have return successors, (1778), 1582 states have call predecessors, (1778), 1582 states have call successors, (1778) [2022-11-23 01:43:18,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9783 states to 9783 states and 16410 transitions. [2022-11-23 01:43:18,775 INFO L78 Accepts]: Start accepts. Automaton has 9783 states and 16410 transitions. Word has length 151 [2022-11-23 01:43:18,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:43:18,775 INFO L495 AbstractCegarLoop]: Abstraction has 9783 states and 16410 transitions. [2022-11-23 01:43:18,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:43:18,777 INFO L276 IsEmpty]: Start isEmpty. Operand 9783 states and 16410 transitions. [2022-11-23 01:43:18,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-23 01:43:18,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:43:18,822 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:43:18,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 01:43:18,822 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:43:18,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:43:18,823 INFO L85 PathProgramCache]: Analyzing trace with hash -818656670, now seen corresponding path program 1 times [2022-11-23 01:43:18,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:43:18,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923276951] [2022-11-23 01:43:18,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:43:18,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:43:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:18,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 01:43:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:18,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:43:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:18,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:43:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:18,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 01:43:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:18,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 01:43:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:18,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 01:43:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:18,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-23 01:43:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:18,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-23 01:43:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:18,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-23 01:43:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:18,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-23 01:43:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:18,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-23 01:43:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:18,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-23 01:43:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:18,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-23 01:43:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:18,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-23 01:43:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:18,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-23 01:43:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:18,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-23 01:43:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:18,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-23 01:43:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-23 01:43:18,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:43:18,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923276951] [2022-11-23 01:43:18,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923276951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:43:18,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:43:18,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:43:18,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860597572] [2022-11-23 01:43:18,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:43:18,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:43:18,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:43:18,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:43:18,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:43:18,980 INFO L87 Difference]: Start difference. First operand 9783 states and 16410 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:43:22,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:43:22,749 INFO L93 Difference]: Finished difference Result 25405 states and 43393 transitions. [2022-11-23 01:43:22,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 01:43:22,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 152 [2022-11-23 01:43:22,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:43:22,817 INFO L225 Difference]: With dead ends: 25405 [2022-11-23 01:43:22,817 INFO L226 Difference]: Without dead ends: 17323 [2022-11-23 01:43:22,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-23 01:43:22,842 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 1373 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 2570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:43:22,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1388 Valid, 907 Invalid, 2570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 1912 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-23 01:43:22,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17323 states. [2022-11-23 01:43:25,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17323 to 17096. [2022-11-23 01:43:25,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17096 states, 14281 states have (on average 1.589174427561095) internal successors, (22695), 14288 states have internal predecessors, (22695), 2786 states have call successors, (2786), 24 states have call predecessors, (2786), 28 states have return successors, (3125), 2785 states have call predecessors, (3125), 2785 states have call successors, (3125) [2022-11-23 01:43:25,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17096 states to 17096 states and 28606 transitions. [2022-11-23 01:43:25,103 INFO L78 Accepts]: Start accepts. Automaton has 17096 states and 28606 transitions. Word has length 152 [2022-11-23 01:43:25,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:43:25,103 INFO L495 AbstractCegarLoop]: Abstraction has 17096 states and 28606 transitions. [2022-11-23 01:43:25,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:43:25,104 INFO L276 IsEmpty]: Start isEmpty. Operand 17096 states and 28606 transitions. [2022-11-23 01:43:25,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-23 01:43:25,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:43:25,140 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:43:25,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-23 01:43:25,141 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:43:25,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:43:25,141 INFO L85 PathProgramCache]: Analyzing trace with hash 836374866, now seen corresponding path program 1 times [2022-11-23 01:43:25,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:43:25,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513628359] [2022-11-23 01:43:25,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:43:25,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:43:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:25,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 01:43:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:25,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:43:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:25,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:43:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:25,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 01:43:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:25,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 01:43:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:25,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 01:43:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:25,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-23 01:43:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:25,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-23 01:43:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:25,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-23 01:43:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:25,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 01:43:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:25,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 01:43:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:25,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-23 01:43:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:25,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-23 01:43:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:25,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-23 01:43:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:25,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-23 01:43:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:25,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-23 01:43:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:25,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-23 01:43:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:25,260 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-23 01:43:25,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:43:25,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513628359] [2022-11-23 01:43:25,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513628359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:43:25,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:43:25,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:43:25,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589241705] [2022-11-23 01:43:25,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:43:25,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:43:25,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:43:25,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:43:25,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:43:25,263 INFO L87 Difference]: Start difference. First operand 17096 states and 28606 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:43:30,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:43:30,564 INFO L93 Difference]: Finished difference Result 45381 states and 77406 transitions. [2022-11-23 01:43:30,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 01:43:30,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2022-11-23 01:43:30,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:43:30,712 INFO L225 Difference]: With dead ends: 45381 [2022-11-23 01:43:30,712 INFO L226 Difference]: Without dead ends: 30663 [2022-11-23 01:43:30,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-23 01:43:30,756 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 1371 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 2565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-23 01:43:30,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1386 Valid, 873 Invalid, 2565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 1907 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-23 01:43:30,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30663 states. [2022-11-23 01:43:34,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30663 to 30436. [2022-11-23 01:43:34,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30436 states, 25582 states have (on average 1.5854116175435853) internal successors, (40558), 25589 states have internal predecessors, (40558), 4825 states have call successors, (4825), 24 states have call predecessors, (4825), 28 states have return successors, (5438), 4824 states have call predecessors, (5438), 4824 states have call successors, (5438) [2022-11-23 01:43:34,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30436 states to 30436 states and 50821 transitions. [2022-11-23 01:43:34,311 INFO L78 Accepts]: Start accepts. Automaton has 30436 states and 50821 transitions. Word has length 153 [2022-11-23 01:43:34,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:43:34,311 INFO L495 AbstractCegarLoop]: Abstraction has 30436 states and 50821 transitions. [2022-11-23 01:43:34,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:43:34,312 INFO L276 IsEmpty]: Start isEmpty. Operand 30436 states and 50821 transitions. [2022-11-23 01:43:34,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-23 01:43:34,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:43:34,364 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:43:34,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-23 01:43:34,364 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:43:34,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:43:34,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1472805952, now seen corresponding path program 1 times [2022-11-23 01:43:34,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:43:34,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479742685] [2022-11-23 01:43:34,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:43:34,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:43:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:34,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 01:43:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:34,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:43:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:34,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:43:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:34,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 01:43:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:34,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 01:43:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:34,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 01:43:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:34,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-23 01:43:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:34,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-23 01:43:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:34,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-23 01:43:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:34,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-23 01:43:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:34,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-23 01:43:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:34,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-23 01:43:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:34,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-23 01:43:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:34,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-23 01:43:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:34,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-23 01:43:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:34,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-23 01:43:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:34,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-23 01:43:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:34,494 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-23 01:43:34,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:43:34,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479742685] [2022-11-23 01:43:34,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479742685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:43:34,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:43:34,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:43:34,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533292594] [2022-11-23 01:43:34,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:43:34,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:43:34,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:43:34,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:43:34,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:43:34,497 INFO L87 Difference]: Start difference. First operand 30436 states and 50821 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:43:42,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:43:42,691 INFO L93 Difference]: Finished difference Result 83118 states and 140930 transitions. [2022-11-23 01:43:42,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 01:43:42,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 154 [2022-11-23 01:43:42,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:43:42,898 INFO L225 Difference]: With dead ends: 83118 [2022-11-23 01:43:42,898 INFO L226 Difference]: Without dead ends: 55872 [2022-11-23 01:43:42,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-23 01:43:42,960 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1369 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1893 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 2556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 1893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-23 01:43:42,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1384 Valid, 876 Invalid, 2556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 1893 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-23 01:43:43,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55872 states. [2022-11-23 01:43:48,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55872 to 55645. [2022-11-23 01:43:48,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55645 states, 47076 states have (on average 1.5801894808394936) internal successors, (74389), 47083 states have internal predecessors, (74389), 8540 states have call successors, (8540), 24 states have call predecessors, (8540), 28 states have return successors, (9685), 8539 states have call predecessors, (9685), 8539 states have call successors, (9685) [2022-11-23 01:43:48,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55645 states to 55645 states and 92614 transitions. [2022-11-23 01:43:48,969 INFO L78 Accepts]: Start accepts. Automaton has 55645 states and 92614 transitions. Word has length 154 [2022-11-23 01:43:48,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:43:48,969 INFO L495 AbstractCegarLoop]: Abstraction has 55645 states and 92614 transitions. [2022-11-23 01:43:48,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:43:48,970 INFO L276 IsEmpty]: Start isEmpty. Operand 55645 states and 92614 transitions. [2022-11-23 01:43:49,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-23 01:43:49,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:43:49,060 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:43:49,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-23 01:43:49,060 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:43:49,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:43:49,061 INFO L85 PathProgramCache]: Analyzing trace with hash -679154510, now seen corresponding path program 1 times [2022-11-23 01:43:49,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:43:49,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295073060] [2022-11-23 01:43:49,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:43:49,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:43:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:49,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 01:43:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:49,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:43:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:49,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:43:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:49,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 01:43:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:49,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 01:43:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:49,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 01:43:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:49,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-23 01:43:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:49,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-23 01:43:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:49,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-23 01:43:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:49,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-23 01:43:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:49,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-23 01:43:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:49,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-23 01:43:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:49,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-23 01:43:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:49,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-23 01:43:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:49,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-23 01:43:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:49,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-23 01:43:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:49,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-23 01:43:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:49,569 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-23 01:43:49,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:43:49,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295073060] [2022-11-23 01:43:49,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295073060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:43:49,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:43:49,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:43:49,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084496323] [2022-11-23 01:43:49,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:43:49,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:43:49,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:43:49,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:43:49,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:43:49,571 INFO L87 Difference]: Start difference. First operand 55645 states and 92614 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17)