./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 f690bd0b308b8d74e0ee0ea91ab3037911a0ede5caa4981030fbf7d571a3c297 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:59:18,395 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:59:18,463 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:59:18,468 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:59:18,469 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:59:18,503 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:59:18,503 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:59:18,504 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:59:18,505 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:59:18,505 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:59:18,506 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:59:18,506 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:59:18,507 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:59:18,507 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:59:18,508 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:59:18,508 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:59:18,509 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:59:18,509 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:59:18,510 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:59:18,510 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:59:18,511 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:59:18,515 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:59:18,516 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:59:18,516 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:59:18,522 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:59:18,523 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:59:18,523 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:59:18,524 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:59:18,524 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:59:18,524 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:59:18,525 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:59:18,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:59:18,525 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:59:18,526 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:59:18,526 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:59:18,526 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:59:18,526 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:59:18,526 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:59:18,527 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:59:18,527 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:59:18,527 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:59:18,527 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:59:18,527 INFO L153 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_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f690bd0b308b8d74e0ee0ea91ab3037911a0ede5caa4981030fbf7d571a3c297 [2023-11-29 04:59:18,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:59:18,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:59:18,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:59:18,765 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:59:18,766 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:59:18,767 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/product-lines/email_spec6_product15.cil.c [2023-11-29 04:59:21,824 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:59:22,153 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:59:22,154 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/sv-benchmarks/c/product-lines/email_spec6_product15.cil.c [2023-11-29 04:59:22,178 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/data/d184212d2/14fdd4725ef1499fb096f7f9fe15a2f0/FLAG604e5f590 [2023-11-29 04:59:22,194 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/data/d184212d2/14fdd4725ef1499fb096f7f9fe15a2f0 [2023-11-29 04:59:22,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:59:22,199 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:59:22,200 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:59:22,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:59:22,206 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:59:22,207 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:59:22" (1/1) ... [2023-11-29 04:59:22,208 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58b6e964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:22, skipping insertion in model container [2023-11-29 04:59:22,208 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:59:22" (1/1) ... [2023-11-29 04:59:22,295 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:59:22,508 WARN L240 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_fa7bdd98-4108-4697-aa25-a7c181d116e5/sv-benchmarks/c/product-lines/email_spec6_product15.cil.c[6819,6832] [2023-11-29 04:59:22,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:59:22,863 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:59:22,876 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2023-11-29 04:59:22,878 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [273] [2023-11-29 04:59:22,879 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [282] [2023-11-29 04:59:22,879 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [582] [2023-11-29 04:59:22,879 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [599] [2023-11-29 04:59:22,880 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1003] [2023-11-29 04:59:22,880 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1107] [2023-11-29 04:59:22,880 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2181] [2023-11-29 04:59:22,881 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptDecrypt_spec.i","") [2219] [2023-11-29 04:59:22,881 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2265] [2023-11-29 04:59:22,881 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2540] [2023-11-29 04:59:22,892 WARN L240 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_fa7bdd98-4108-4697-aa25-a7c181d116e5/sv-benchmarks/c/product-lines/email_spec6_product15.cil.c[6819,6832] [2023-11-29 04:59:22,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:59:23,021 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:59:23,030 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:59:23,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:23 WrapperNode [2023-11-29 04:59:23,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:59:23,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:59:23,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:59:23,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:59:23,043 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:23" (1/1) ... [2023-11-29 04:59:23,074 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:23" (1/1) ... [2023-11-29 04:59:23,130 INFO L138 Inliner]: procedures = 126, calls = 203, calls flagged for inlining = 53, calls inlined = 44, statements flattened = 888 [2023-11-29 04:59:23,130 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:59:23,131 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:59:23,131 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:59:23,131 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:59:23,141 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:23" (1/1) ... [2023-11-29 04:59:23,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:23" (1/1) ... [2023-11-29 04:59:23,146 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:23" (1/1) ... [2023-11-29 04:59:23,172 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2023-11-29 04:59:23,173 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:23" (1/1) ... [2023-11-29 04:59:23,173 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:23" (1/1) ... [2023-11-29 04:59:23,191 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:23" (1/1) ... [2023-11-29 04:59:23,202 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:23" (1/1) ... [2023-11-29 04:59:23,209 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:23" (1/1) ... [2023-11-29 04:59:23,215 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:23" (1/1) ... [2023-11-29 04:59:23,225 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:59:23,226 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:59:23,227 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:59:23,227 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:59:23,228 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:23" (1/1) ... [2023-11-29 04:59:23,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:59:23,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:59:23,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:59:23,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:59:23,302 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-11-29 04:59:23,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-11-29 04:59:23,303 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-29 04:59:23,303 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-29 04:59:23,303 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-29 04:59:23,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-29 04:59:23,304 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-29 04:59:23,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-29 04:59:23,304 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-29 04:59:23,304 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-29 04:59:23,304 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-29 04:59:23,304 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-29 04:59:23,305 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-29 04:59:23,305 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-29 04:59:23,305 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-29 04:59:23,305 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-29 04:59:23,305 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-29 04:59:23,305 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-29 04:59:23,306 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-29 04:59:23,306 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-29 04:59:23,306 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-29 04:59:23,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:59:23,306 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-29 04:59:23,306 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-29 04:59:23,307 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-29 04:59:23,307 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-29 04:59:23,307 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-29 04:59:23,307 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-29 04:59:23,307 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-29 04:59:23,307 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-29 04:59:23,307 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-29 04:59:23,308 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-29 04:59:23,308 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-29 04:59:23,308 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-29 04:59:23,308 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-29 04:59:23,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-29 04:59:23,308 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-29 04:59:23,309 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-29 04:59:23,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:59:23,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:59:23,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:59:23,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 04:59:23,309 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-29 04:59:23,310 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-29 04:59:23,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:59:23,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:59:23,524 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:59:23,526 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:59:24,249 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:59:24,325 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:59:24,325 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 04:59:24,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:59:24 BoogieIcfgContainer [2023-11-29 04:59:24,326 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:59:24,329 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:59:24,329 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:59:24,333 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:59:24,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:59:22" (1/3) ... [2023-11-29 04:59:24,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4297b397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:59:24, skipping insertion in model container [2023-11-29 04:59:24,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:23" (2/3) ... [2023-11-29 04:59:24,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4297b397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:59:24, skipping insertion in model container [2023-11-29 04:59:24,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:59:24" (3/3) ... [2023-11-29 04:59:24,337 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product15.cil.c [2023-11-29 04:59:24,356 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:59:24,356 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:59:24,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:59:24,426 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=LoopHeads, 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;@768f2302, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:59:24,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:59:24,434 INFO L276 IsEmpty]: Start isEmpty. Operand has 274 states, 207 states have (on average 1.5942028985507246) internal successors, (330), 211 states have internal predecessors, (330), 46 states have call successors, (46), 19 states have call predecessors, (46), 19 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-29 04:59:24,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 04:59:24,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:24,461 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-11-29 04:59:24,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:24,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:24,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1584080674, now seen corresponding path program 1 times [2023-11-29 04:59:24,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:24,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420307309] [2023-11-29 04:59:24,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:24,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:25,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:59:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:25,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 04:59:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:25,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 04:59:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:25,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 04:59:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:25,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 04:59:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:25,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 04:59:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:25,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 04:59:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:25,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 04:59:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:25,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 04:59:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:25,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 04:59:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:25,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 04:59:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:25,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 04:59:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:25,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 04:59:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:25,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 04:59:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:25,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 04:59:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 04:59:25,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:25,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420307309] [2023-11-29 04:59:25,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420307309] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:59:25,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023510640] [2023-11-29 04:59:25,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:25,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:25,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:59:25,285 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:59:25,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:59:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:25,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 04:59:25,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:59:25,735 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 04:59:25,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:59:25,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023510640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:59:25,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:59:25,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2023-11-29 04:59:25,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727788638] [2023-11-29 04:59:25,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:59:25,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:59:25,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:25,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:59:25,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:59:25,785 INFO L87 Difference]: Start difference. First operand has 274 states, 207 states have (on average 1.5942028985507246) internal successors, (330), 211 states have internal predecessors, (330), 46 states have call successors, (46), 19 states have call predecessors, (46), 19 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:59:25,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:25,879 INFO L93 Difference]: Finished difference Result 403 states and 607 transitions. [2023-11-29 04:59:25,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:59:25,882 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 107 [2023-11-29 04:59:25,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:25,898 INFO L225 Difference]: With dead ends: 403 [2023-11-29 04:59:25,899 INFO L226 Difference]: Without dead ends: 271 [2023-11-29 04:59:25,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:59:25,909 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:25,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 405 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:59:25,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-11-29 04:59:25,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2023-11-29 04:59:25,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 205 states have (on average 1.575609756097561) internal successors, (323), 208 states have internal predecessors, (323), 46 states have call successors, (46), 19 states have call predecessors, (46), 19 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-29 04:59:25,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 414 transitions. [2023-11-29 04:59:25,985 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 414 transitions. Word has length 107 [2023-11-29 04:59:25,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:25,986 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 414 transitions. [2023-11-29 04:59:25,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:59:25,987 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 414 transitions. [2023-11-29 04:59:25,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-29 04:59:25,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:25,992 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-11-29 04:59:26,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:59:26,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 04:59:26,193 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:26,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:26,194 INFO L85 PathProgramCache]: Analyzing trace with hash 873648122, now seen corresponding path program 1 times [2023-11-29 04:59:26,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:26,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731127030] [2023-11-29 04:59:26,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:26,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:26,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:59:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:26,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 04:59:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:26,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 04:59:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:26,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 04:59:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:26,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 04:59:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:26,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 04:59:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:26,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 04:59:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:26,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 04:59:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:26,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 04:59:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:26,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 04:59:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:26,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 04:59:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:26,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 04:59:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:26,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 04:59:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:26,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 04:59:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:26,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 04:59:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:26,600 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 04:59:26,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:26,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731127030] [2023-11-29 04:59:26,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731127030] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:59:26,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418935298] [2023-11-29 04:59:26,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:26,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:26,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:59:26,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:59:26,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:59:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:26,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:59:26,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:59:27,012 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 04:59:27,012 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:59:27,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418935298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:59:27,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:59:27,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-29 04:59:27,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641308386] [2023-11-29 04:59:27,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:59:27,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:59:27,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:27,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:59:27,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:59:27,016 INFO L87 Difference]: Start difference. First operand 271 states and 414 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:59:27,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:27,078 INFO L93 Difference]: Finished difference Result 399 states and 594 transitions. [2023-11-29 04:59:27,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:59:27,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 108 [2023-11-29 04:59:27,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:27,083 INFO L225 Difference]: With dead ends: 399 [2023-11-29 04:59:27,083 INFO L226 Difference]: Without dead ends: 273 [2023-11-29 04:59:27,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:59:27,086 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 0 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:27,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 803 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:59:27,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-11-29 04:59:27,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-11-29 04:59:27,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 207 states have (on average 1.570048309178744) internal successors, (325), 210 states have internal predecessors, (325), 46 states have call successors, (46), 19 states have call predecessors, (46), 19 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-29 04:59:27,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 416 transitions. [2023-11-29 04:59:27,112 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 416 transitions. Word has length 108 [2023-11-29 04:59:27,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:27,113 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 416 transitions. [2023-11-29 04:59:27,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:59:27,113 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 416 transitions. [2023-11-29 04:59:27,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 04:59:27,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:27,116 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:59:27,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 04:59:27,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:27,317 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:27,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:27,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1936479204, now seen corresponding path program 1 times [2023-11-29 04:59:27,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:27,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820463069] [2023-11-29 04:59:27,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:27,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:27,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:59:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:27,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 04:59:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:27,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 04:59:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:27,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 04:59:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:27,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 04:59:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:27,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 04:59:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:27,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 04:59:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:27,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 04:59:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:27,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 04:59:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:27,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 04:59:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:27,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 04:59:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:27,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 04:59:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:27,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 04:59:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:27,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 04:59:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:27,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 04:59:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:27,568 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 04:59:27,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:27,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820463069] [2023-11-29 04:59:27,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820463069] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:59:27,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812053244] [2023-11-29 04:59:27,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:27,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:27,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:59:27,570 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:59:27,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:59:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:27,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:59:27,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:59:27,912 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 04:59:27,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:59:27,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812053244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:59:27,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:59:27,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-29 04:59:27,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120659422] [2023-11-29 04:59:27,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:59:27,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:59:27,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:27,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:59:27,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:59:27,915 INFO L87 Difference]: Start difference. First operand 273 states and 416 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:59:27,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:27,979 INFO L93 Difference]: Finished difference Result 576 states and 891 transitions. [2023-11-29 04:59:27,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:59:27,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 115 [2023-11-29 04:59:27,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:27,984 INFO L225 Difference]: With dead ends: 576 [2023-11-29 04:59:27,984 INFO L226 Difference]: Without dead ends: 325 [2023-11-29 04:59:27,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:59:27,987 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 102 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:27,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 773 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:59:27,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-11-29 04:59:28,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 320. [2023-11-29 04:59:28,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 243 states have (on average 1.5843621399176955) internal successors, (385), 246 states have internal predecessors, (385), 57 states have call successors, (57), 19 states have call predecessors, (57), 19 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-29 04:59:28,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 498 transitions. [2023-11-29 04:59:28,017 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 498 transitions. Word has length 115 [2023-11-29 04:59:28,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:28,017 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 498 transitions. [2023-11-29 04:59:28,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:59:28,018 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 498 transitions. [2023-11-29 04:59:28,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 04:59:28,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:28,022 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:59:28,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:59:28,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:28,225 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:28,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:28,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1218779202, now seen corresponding path program 1 times [2023-11-29 04:59:28,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:28,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56916317] [2023-11-29 04:59:28,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:28,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:28,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:59:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:28,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 04:59:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:28,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 04:59:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:28,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 04:59:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:28,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 04:59:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:28,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 04:59:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:28,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 04:59:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:28,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 04:59:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:28,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 04:59:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:28,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 04:59:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:28,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 04:59:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:28,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 04:59:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:28,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 04:59:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:28,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 04:59:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:28,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 04:59:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 04:59:28,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:28,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56916317] [2023-11-29 04:59:28,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56916317] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:59:28,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550487136] [2023-11-29 04:59:28,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:28,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:28,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:59:28,535 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:59:28,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:59:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:28,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:59:28,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:59:28,960 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 04:59:28,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:59:28,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550487136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:59:28,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:59:28,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-11-29 04:59:28,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554713075] [2023-11-29 04:59:28,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:59:28,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:59:28,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:28,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:59:28,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:59:28,963 INFO L87 Difference]: Start difference. First operand 320 states and 498 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 04:59:29,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:29,087 INFO L93 Difference]: Finished difference Result 635 states and 990 transitions. [2023-11-29 04:59:29,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:59:29,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 116 [2023-11-29 04:59:29,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:29,091 INFO L225 Difference]: With dead ends: 635 [2023-11-29 04:59:29,092 INFO L226 Difference]: Without dead ends: 322 [2023-11-29 04:59:29,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:59:29,095 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 8 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:29,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1561 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:59:29,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-11-29 04:59:29,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2023-11-29 04:59:29,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 244 states have (on average 1.5819672131147542) internal successors, (386), 248 states have internal predecessors, (386), 57 states have call successors, (57), 19 states have call predecessors, (57), 20 states have return successors, (58), 56 states have call predecessors, (58), 56 states have call successors, (58) [2023-11-29 04:59:29,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 501 transitions. [2023-11-29 04:59:29,117 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 501 transitions. Word has length 116 [2023-11-29 04:59:29,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:29,117 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 501 transitions. [2023-11-29 04:59:29,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 04:59:29,117 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 501 transitions. [2023-11-29 04:59:29,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 04:59:29,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:29,120 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:59:29,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:59:29,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:29,325 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:29,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:29,325 INFO L85 PathProgramCache]: Analyzing trace with hash -100766674, now seen corresponding path program 1 times [2023-11-29 04:59:29,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:29,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135134288] [2023-11-29 04:59:29,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:29,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:29,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:59:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:29,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 04:59:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:29,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 04:59:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:29,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 04:59:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:29,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 04:59:29,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:29,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 04:59:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:29,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 04:59:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:29,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 04:59:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:29,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 04:59:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:29,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 04:59:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:29,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 04:59:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:29,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 04:59:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:29,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 04:59:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:29,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 04:59:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:29,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 04:59:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:29,624 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:59:29,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:29,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135134288] [2023-11-29 04:59:29,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135134288] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:59:29,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901676757] [2023-11-29 04:59:29,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:29,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:29,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:59:29,627 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:59:29,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:59:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:29,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:59:29,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:59:30,025 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 04:59:30,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:59:30,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901676757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:59:30,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:59:30,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-11-29 04:59:30,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317150710] [2023-11-29 04:59:30,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:59:30,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:59:30,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:30,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:59:30,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:59:30,028 INFO L87 Difference]: Start difference. First operand 322 states and 501 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 04:59:30,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:30,147 INFO L93 Difference]: Finished difference Result 637 states and 995 transitions. [2023-11-29 04:59:30,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:59:30,147 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 117 [2023-11-29 04:59:30,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:30,150 INFO L225 Difference]: With dead ends: 637 [2023-11-29 04:59:30,151 INFO L226 Difference]: Without dead ends: 324 [2023-11-29 04:59:30,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-29 04:59:30,153 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 8 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:30,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1547 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:59:30,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-11-29 04:59:30,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2023-11-29 04:59:30,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 245 states have (on average 1.579591836734694) internal successors, (387), 250 states have internal predecessors, (387), 57 states have call successors, (57), 19 states have call predecessors, (57), 21 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2023-11-29 04:59:30,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 507 transitions. [2023-11-29 04:59:30,174 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 507 transitions. Word has length 117 [2023-11-29 04:59:30,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:30,175 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 507 transitions. [2023-11-29 04:59:30,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 04:59:30,175 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 507 transitions. [2023-11-29 04:59:30,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 04:59:30,178 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:30,178 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 04:59:30,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:59:30,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:30,379 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:30,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:30,380 INFO L85 PathProgramCache]: Analyzing trace with hash 152101615, now seen corresponding path program 1 times [2023-11-29 04:59:30,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:30,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669655856] [2023-11-29 04:59:30,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:30,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:30,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:59:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:30,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 04:59:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:30,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 04:59:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:30,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 04:59:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:30,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:59:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:30,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 04:59:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:30,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 04:59:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:30,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 04:59:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:30,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 04:59:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:30,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 04:59:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:30,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 04:59:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:30,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 04:59:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:30,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 04:59:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:30,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 04:59:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:30,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 04:59:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:30,623 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 04:59:30,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:30,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669655856] [2023-11-29 04:59:30,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669655856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:59:30,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:59:30,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 04:59:30,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512300247] [2023-11-29 04:59:30,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:59:30,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:59:30,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:30,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:59:30,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:59:30,626 INFO L87 Difference]: Start difference. First operand 324 states and 507 transitions. Second operand has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 04:59:32,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:32,760 INFO L93 Difference]: Finished difference Result 699 states and 1104 transitions. [2023-11-29 04:59:32,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:59:32,761 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 118 [2023-11-29 04:59:32,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:32,767 INFO L225 Difference]: With dead ends: 699 [2023-11-29 04:59:32,767 INFO L226 Difference]: Without dead ends: 394 [2023-11-29 04:59:32,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:59:32,770 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 840 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 2056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:32,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 963 Invalid, 2056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 04:59:32,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-11-29 04:59:32,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 324. [2023-11-29 04:59:32,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 245 states have (on average 1.579591836734694) internal successors, (387), 250 states have internal predecessors, (387), 57 states have call successors, (57), 19 states have call predecessors, (57), 21 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2023-11-29 04:59:32,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 506 transitions. [2023-11-29 04:59:32,827 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 506 transitions. Word has length 118 [2023-11-29 04:59:32,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:32,827 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 506 transitions. [2023-11-29 04:59:32,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 04:59:32,828 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 506 transitions. [2023-11-29 04:59:32,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 04:59:32,832 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:32,833 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:59:32,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:59:32,833 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:32,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:32,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1613567105, now seen corresponding path program 2 times [2023-11-29 04:59:32,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:32,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285186046] [2023-11-29 04:59:32,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:32,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:33,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:59:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:33,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 04:59:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:33,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 04:59:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:33,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 04:59:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:33,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:59:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:33,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 04:59:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:33,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 04:59:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:33,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 04:59:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:33,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 04:59:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:33,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 04:59:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:33,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 04:59:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:33,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 04:59:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:33,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 04:59:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:33,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 04:59:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:33,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 04:59:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:33,132 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 04:59:33,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:33,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285186046] [2023-11-29 04:59:33,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285186046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:59:33,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:59:33,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 04:59:33,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604199592] [2023-11-29 04:59:33,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:59:33,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:59:33,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:33,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:59:33,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:59:33,135 INFO L87 Difference]: Start difference. First operand 324 states and 506 transitions. Second operand has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 04:59:35,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:35,093 INFO L93 Difference]: Finished difference Result 701 states and 1107 transitions. [2023-11-29 04:59:35,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:59:35,093 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 119 [2023-11-29 04:59:35,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:35,098 INFO L225 Difference]: With dead ends: 701 [2023-11-29 04:59:35,098 INFO L226 Difference]: Without dead ends: 396 [2023-11-29 04:59:35,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:59:35,101 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 835 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 1789 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 2067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:35,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 963 Invalid, 2067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1789 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 04:59:35,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-29 04:59:35,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 326. [2023-11-29 04:59:35,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 246 states have (on average 1.5772357723577235) internal successors, (388), 252 states have internal predecessors, (388), 57 states have call successors, (57), 19 states have call predecessors, (57), 22 states have return successors, (64), 56 states have call predecessors, (64), 56 states have call successors, (64) [2023-11-29 04:59:35,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 509 transitions. [2023-11-29 04:59:35,140 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 509 transitions. Word has length 119 [2023-11-29 04:59:35,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:35,140 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 509 transitions. [2023-11-29 04:59:35,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 04:59:35,141 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 509 transitions. [2023-11-29 04:59:35,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 04:59:35,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:35,144 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 04:59:35,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 04:59:35,145 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:35,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:35,145 INFO L85 PathProgramCache]: Analyzing trace with hash -664893558, now seen corresponding path program 1 times [2023-11-29 04:59:35,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:35,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228046363] [2023-11-29 04:59:35,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:35,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:35,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:59:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:35,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 04:59:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:35,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 04:59:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:35,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 04:59:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:35,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:59:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:35,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 04:59:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:35,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 04:59:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:35,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 04:59:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:35,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 04:59:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:35,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 04:59:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:35,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 04:59:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:35,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 04:59:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:35,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 04:59:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:35,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 04:59:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:35,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 04:59:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:35,473 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:59:35,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:35,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228046363] [2023-11-29 04:59:35,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228046363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:59:35,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:59:35,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 04:59:35,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928746596] [2023-11-29 04:59:35,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:59:35,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:59:35,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:35,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:59:35,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:59:35,476 INFO L87 Difference]: Start difference. First operand 326 states and 509 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-29 04:59:37,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:37,869 INFO L93 Difference]: Finished difference Result 699 states and 1102 transitions. [2023-11-29 04:59:37,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:59:37,870 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 120 [2023-11-29 04:59:37,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:37,875 INFO L225 Difference]: With dead ends: 699 [2023-11-29 04:59:37,875 INFO L226 Difference]: Without dead ends: 396 [2023-11-29 04:59:37,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-11-29 04:59:37,878 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 845 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 2963 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 3248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 2963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:37,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 1332 Invalid, 3248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 2963 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 04:59:37,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-29 04:59:37,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 326. [2023-11-29 04:59:37,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 246 states have (on average 1.5772357723577235) internal successors, (388), 252 states have internal predecessors, (388), 57 states have call successors, (57), 19 states have call predecessors, (57), 22 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2023-11-29 04:59:37,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 508 transitions. [2023-11-29 04:59:37,905 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 508 transitions. Word has length 120 [2023-11-29 04:59:37,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:37,906 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 508 transitions. [2023-11-29 04:59:37,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-29 04:59:37,906 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 508 transitions. [2023-11-29 04:59:37,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 04:59:37,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:37,908 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:59:37,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:59:37,909 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:37,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:37,909 INFO L85 PathProgramCache]: Analyzing trace with hash -675321925, now seen corresponding path program 2 times [2023-11-29 04:59:37,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:37,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872643751] [2023-11-29 04:59:37,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:37,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:38,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:59:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:38,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 04:59:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:38,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 04:59:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:38,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 04:59:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:38,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:59:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:38,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 04:59:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:38,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 04:59:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:38,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 04:59:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:38,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 04:59:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:38,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 04:59:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:38,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 04:59:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:38,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 04:59:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:38,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 04:59:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:38,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 04:59:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:38,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 04:59:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:38,175 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:59:38,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:38,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872643751] [2023-11-29 04:59:38,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872643751] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:59:38,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:59:38,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 04:59:38,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538393616] [2023-11-29 04:59:38,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:59:38,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:59:38,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:38,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:59:38,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:59:38,179 INFO L87 Difference]: Start difference. First operand 326 states and 508 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-29 04:59:40,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:40,358 INFO L93 Difference]: Finished difference Result 701 states and 1108 transitions. [2023-11-29 04:59:40,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:59:40,359 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 121 [2023-11-29 04:59:40,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:40,363 INFO L225 Difference]: With dead ends: 701 [2023-11-29 04:59:40,363 INFO L226 Difference]: Without dead ends: 398 [2023-11-29 04:59:40,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-11-29 04:59:40,366 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 840 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 3007 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 3289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 3007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:40,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1332 Invalid, 3289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 3007 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 04:59:40,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2023-11-29 04:59:40,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 328. [2023-11-29 04:59:40,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 247 states have (on average 1.5748987854251013) internal successors, (389), 254 states have internal predecessors, (389), 57 states have call successors, (57), 19 states have call predecessors, (57), 23 states have return successors, (68), 56 states have call predecessors, (68), 56 states have call successors, (68) [2023-11-29 04:59:40,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 514 transitions. [2023-11-29 04:59:40,402 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 514 transitions. Word has length 121 [2023-11-29 04:59:40,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:40,402 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 514 transitions. [2023-11-29 04:59:40,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-29 04:59:40,403 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 514 transitions. [2023-11-29 04:59:40,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 04:59:40,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:40,406 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2023-11-29 04:59:40,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 04:59:40,406 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:40,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:40,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1376673723, now seen corresponding path program 1 times [2023-11-29 04:59:40,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:40,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69815046] [2023-11-29 04:59:40,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:40,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:40,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:59:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:40,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 04:59:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:40,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 04:59:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:40,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 04:59:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:40,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:59:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:40,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 04:59:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:40,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 04:59:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:40,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 04:59:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:40,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 04:59:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:40,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 04:59:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:40,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 04:59:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:40,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 04:59:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:40,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 04:59:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:40,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 04:59:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:40,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-29 04:59:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 04:59:40,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:40,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69815046] [2023-11-29 04:59:40,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69815046] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:59:40,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679294878] [2023-11-29 04:59:40,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:40,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:40,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:59:40,722 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:59:40,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:59:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:41,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:59:41,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:59:41,137 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 04:59:41,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:59:41,265 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 04:59:41,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679294878] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:59:41,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:59:41,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2023-11-29 04:59:41,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929609645] [2023-11-29 04:59:41,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:59:41,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 04:59:41,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:41,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 04:59:41,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:59:41,269 INFO L87 Difference]: Start difference. First operand 328 states and 514 transitions. Second operand has 15 states, 14 states have (on average 9.214285714285714) internal successors, (129), 11 states have internal predecessors, (129), 4 states have call successors, (35), 6 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-29 04:59:43,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:43,855 INFO L93 Difference]: Finished difference Result 1030 states and 1719 transitions. [2023-11-29 04:59:43,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 04:59:43,856 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.214285714285714) internal successors, (129), 11 states have internal predecessors, (129), 4 states have call successors, (35), 6 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) Word has length 122 [2023-11-29 04:59:43,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:43,864 INFO L225 Difference]: With dead ends: 1030 [2023-11-29 04:59:43,864 INFO L226 Difference]: Without dead ends: 728 [2023-11-29 04:59:43,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2023-11-29 04:59:43,868 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 1812 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 3359 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 3942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 3359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:43,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1829 Valid, 1487 Invalid, 3942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 3359 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 04:59:43,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2023-11-29 04:59:43,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 643. [2023-11-29 04:59:43,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 498 states have (on average 1.6204819277108433) internal successors, (807), 505 states have internal predecessors, (807), 121 states have call successors, (121), 19 states have call predecessors, (121), 23 states have return successors, (142), 120 states have call predecessors, (142), 120 states have call successors, (142) [2023-11-29 04:59:43,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1070 transitions. [2023-11-29 04:59:43,931 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1070 transitions. Word has length 122 [2023-11-29 04:59:43,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:43,932 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 1070 transitions. [2023-11-29 04:59:43,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.214285714285714) internal successors, (129), 11 states have internal predecessors, (129), 4 states have call successors, (35), 6 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-29 04:59:43,933 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1070 transitions. [2023-11-29 04:59:43,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-29 04:59:43,939 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:43,939 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:59:43,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 04:59:44,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 04:59:44,140 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:44,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:44,140 INFO L85 PathProgramCache]: Analyzing trace with hash -536979665, now seen corresponding path program 1 times [2023-11-29 04:59:44,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:44,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085324117] [2023-11-29 04:59:44,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:44,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:44,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:59:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:44,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 04:59:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:44,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 04:59:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:44,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 04:59:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:44,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:59:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:44,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 04:59:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:44,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 04:59:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:44,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 04:59:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:44,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 04:59:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:44,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 04:59:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:44,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 04:59:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:44,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 04:59:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:44,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 04:59:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:44,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 04:59:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:44,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-29 04:59:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:44,291 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 04:59:44,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:44,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085324117] [2023-11-29 04:59:44,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085324117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:59:44,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:59:44,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:59:44,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715458796] [2023-11-29 04:59:44,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:59:44,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:59:44,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:44,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:59:44,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:59:44,294 INFO L87 Difference]: Start difference. First operand 643 states and 1070 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:59:45,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:45,483 INFO L93 Difference]: Finished difference Result 1585 states and 2708 transitions. [2023-11-29 04:59:45,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:59:45,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 126 [2023-11-29 04:59:45,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:45,491 INFO L225 Difference]: With dead ends: 1585 [2023-11-29 04:59:45,491 INFO L226 Difference]: Without dead ends: 1010 [2023-11-29 04:59:45,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:59:45,494 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 928 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:45,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 724 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 04:59:45,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-11-29 04:59:45,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 935. [2023-11-29 04:59:45,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 726 states have (on average 1.6308539944903582) internal successors, (1184), 733 states have internal predecessors, (1184), 185 states have call successors, (185), 19 states have call predecessors, (185), 23 states have return successors, (216), 184 states have call predecessors, (216), 184 states have call successors, (216) [2023-11-29 04:59:45,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1585 transitions. [2023-11-29 04:59:45,607 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1585 transitions. Word has length 126 [2023-11-29 04:59:45,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:45,607 INFO L495 AbstractCegarLoop]: Abstraction has 935 states and 1585 transitions. [2023-11-29 04:59:45,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:59:45,608 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1585 transitions. [2023-11-29 04:59:45,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-29 04:59:45,617 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:45,617 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:59:45,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 04:59:45,618 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:45,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:45,618 INFO L85 PathProgramCache]: Analyzing trace with hash 956502652, now seen corresponding path program 1 times [2023-11-29 04:59:45,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:45,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357170376] [2023-11-29 04:59:45,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:45,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:45,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:59:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:45,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 04:59:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:45,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 04:59:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:45,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 04:59:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:45,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:59:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:45,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 04:59:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:45,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 04:59:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:45,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 04:59:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:45,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 04:59:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:45,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 04:59:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:45,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 04:59:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:45,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 04:59:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:45,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 04:59:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:45,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 04:59:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:45,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-29 04:59:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:45,768 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 04:59:45,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:45,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357170376] [2023-11-29 04:59:45,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357170376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:59:45,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:59:45,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:59:45,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719866799] [2023-11-29 04:59:45,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:59:45,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:59:45,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:45,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:59:45,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:59:45,771 INFO L87 Difference]: Start difference. First operand 935 states and 1585 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:59:47,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:47,209 INFO L93 Difference]: Finished difference Result 2302 states and 3965 transitions. [2023-11-29 04:59:47,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:59:47,210 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 127 [2023-11-29 04:59:47,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:47,223 INFO L225 Difference]: With dead ends: 2302 [2023-11-29 04:59:47,223 INFO L226 Difference]: Without dead ends: 1485 [2023-11-29 04:59:47,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:59:47,230 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 926 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:47,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 715 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 04:59:47,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2023-11-29 04:59:47,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1410. [2023-11-29 04:59:47,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1106 states have (on average 1.6347197106690778) internal successors, (1808), 1113 states have internal predecessors, (1808), 280 states have call successors, (280), 19 states have call predecessors, (280), 23 states have return successors, (311), 279 states have call predecessors, (311), 279 states have call successors, (311) [2023-11-29 04:59:47,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 2399 transitions. [2023-11-29 04:59:47,354 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 2399 transitions. Word has length 127 [2023-11-29 04:59:47,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:47,355 INFO L495 AbstractCegarLoop]: Abstraction has 1410 states and 2399 transitions. [2023-11-29 04:59:47,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:59:47,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 2399 transitions. [2023-11-29 04:59:47,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-29 04:59:47,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:47,366 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:59:47,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 04:59:47,367 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:47,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:47,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1974222785, now seen corresponding path program 1 times [2023-11-29 04:59:47,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:47,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466480872] [2023-11-29 04:59:47,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:47,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:47,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:59:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:47,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 04:59:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:47,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 04:59:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:47,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 04:59:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:47,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:59:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:47,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 04:59:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:47,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 04:59:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:47,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 04:59:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:47,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 04:59:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:47,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 04:59:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:47,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 04:59:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:47,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 04:59:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:47,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 04:59:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:47,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-29 04:59:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:47,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-29 04:59:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:47,506 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 04:59:47,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:47,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466480872] [2023-11-29 04:59:47,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466480872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:59:47,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:59:47,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:59:47,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048584012] [2023-11-29 04:59:47,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:59:47,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:59:47,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:47,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:59:47,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:59:47,509 INFO L87 Difference]: Start difference. First operand 1410 states and 2399 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:59:48,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:48,799 INFO L93 Difference]: Finished difference Result 3364 states and 5843 transitions. [2023-11-29 04:59:48,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:59:48,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2023-11-29 04:59:48,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:48,819 INFO L225 Difference]: With dead ends: 3364 [2023-11-29 04:59:48,820 INFO L226 Difference]: Without dead ends: 2200 [2023-11-29 04:59:48,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:59:48,827 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 924 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:48,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 702 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 04:59:48,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2200 states. [2023-11-29 04:59:49,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2200 to 2125. [2023-11-29 04:59:49,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2125 states, 1698 states have (on average 1.6383981154299176) internal successors, (2782), 1705 states have internal predecessors, (2782), 403 states have call successors, (403), 19 states have call predecessors, (403), 23 states have return successors, (450), 402 states have call predecessors, (450), 402 states have call successors, (450) [2023-11-29 04:59:49,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2125 states to 2125 states and 3635 transitions. [2023-11-29 04:59:49,032 INFO L78 Accepts]: Start accepts. Automaton has 2125 states and 3635 transitions. Word has length 128 [2023-11-29 04:59:49,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:49,032 INFO L495 AbstractCegarLoop]: Abstraction has 2125 states and 3635 transitions. [2023-11-29 04:59:49,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:59:49,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2125 states and 3635 transitions. [2023-11-29 04:59:49,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-29 04:59:49,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:49,051 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:59:49,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 04:59:49,052 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:49,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:49,052 INFO L85 PathProgramCache]: Analyzing trace with hash 546777691, now seen corresponding path program 1 times [2023-11-29 04:59:49,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:49,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848061109] [2023-11-29 04:59:49,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:49,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:49,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:59:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:49,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 04:59:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:49,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 04:59:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:49,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 04:59:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:49,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:59:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:49,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 04:59:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:49,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 04:59:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:49,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 04:59:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:49,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 04:59:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:49,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 04:59:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:49,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 04:59:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:49,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 04:59:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:49,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 04:59:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:49,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 04:59:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:49,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 04:59:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:49,200 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 04:59:49,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:49,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848061109] [2023-11-29 04:59:49,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848061109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:59:49,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:59:49,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:59:49,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682091594] [2023-11-29 04:59:49,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:59:49,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:59:49,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:49,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:59:49,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:59:49,203 INFO L87 Difference]: Start difference. First operand 2125 states and 3635 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:59:50,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:50,664 INFO L93 Difference]: Finished difference Result 5006 states and 8756 transitions. [2023-11-29 04:59:50,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:59:50,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 129 [2023-11-29 04:59:50,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:50,688 INFO L225 Difference]: With dead ends: 5006 [2023-11-29 04:59:50,689 INFO L226 Difference]: Without dead ends: 3336 [2023-11-29 04:59:50,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:59:50,694 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 922 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:50,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 702 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 04:59:50,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2023-11-29 04:59:50,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 3261. [2023-11-29 04:59:50,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3261 states, 2655 states have (on average 1.6406779661016948) internal successors, (4356), 2662 states have internal predecessors, (4356), 582 states have call successors, (582), 19 states have call predecessors, (582), 23 states have return successors, (655), 581 states have call predecessors, (655), 581 states have call successors, (655) [2023-11-29 04:59:50,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3261 states to 3261 states and 5593 transitions. [2023-11-29 04:59:50,864 INFO L78 Accepts]: Start accepts. Automaton has 3261 states and 5593 transitions. Word has length 129 [2023-11-29 04:59:50,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:50,864 INFO L495 AbstractCegarLoop]: Abstraction has 3261 states and 5593 transitions. [2023-11-29 04:59:50,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:59:50,865 INFO L276 IsEmpty]: Start isEmpty. Operand 3261 states and 5593 transitions. [2023-11-29 04:59:50,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-29 04:59:50,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:50,878 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:59:50,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 04:59:50,878 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:50,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:50,878 INFO L85 PathProgramCache]: Analyzing trace with hash 300694373, now seen corresponding path program 1 times [2023-11-29 04:59:50,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:50,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982870934] [2023-11-29 04:59:50,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:50,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:50,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:59:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:51,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 04:59:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:51,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 04:59:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:51,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 04:59:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:51,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:59:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:51,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 04:59:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:51,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 04:59:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:51,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 04:59:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:51,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 04:59:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:51,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 04:59:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:51,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 04:59:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:51,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 04:59:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:51,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 04:59:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:51,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-29 04:59:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:51,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 04:59:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 04:59:51,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:51,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982870934] [2023-11-29 04:59:51,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982870934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:59:51,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:59:51,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:59:51,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457763321] [2023-11-29 04:59:51,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:59:51,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:59:51,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:51,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:59:51,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:59:51,062 INFO L87 Difference]: Start difference. First operand 3261 states and 5593 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:59:52,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:52,448 INFO L93 Difference]: Finished difference Result 7961 states and 13954 transitions. [2023-11-29 04:59:52,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:59:52,448 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 130 [2023-11-29 04:59:52,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:52,485 INFO L225 Difference]: With dead ends: 7961 [2023-11-29 04:59:52,485 INFO L226 Difference]: Without dead ends: 5394 [2023-11-29 04:59:52,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:59:52,493 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 920 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:52,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 737 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 04:59:52,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5394 states. [2023-11-29 04:59:52,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5394 to 5319. [2023-11-29 04:59:52,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5319 states, 4337 states have (on average 1.632234263315656) internal successors, (7079), 4344 states have internal predecessors, (7079), 958 states have call successors, (958), 19 states have call predecessors, (958), 23 states have return successors, (1075), 957 states have call predecessors, (1075), 957 states have call successors, (1075) [2023-11-29 04:59:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 9112 transitions. [2023-11-29 04:59:52,920 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 9112 transitions. Word has length 130 [2023-11-29 04:59:52,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:52,921 INFO L495 AbstractCegarLoop]: Abstraction has 5319 states and 9112 transitions. [2023-11-29 04:59:52,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:59:52,921 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 9112 transitions. [2023-11-29 04:59:52,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-29 04:59:52,952 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:52,952 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:59:52,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 04:59:52,953 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:52,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:52,953 INFO L85 PathProgramCache]: Analyzing trace with hash 49153719, now seen corresponding path program 1 times [2023-11-29 04:59:52,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:52,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875592678] [2023-11-29 04:59:52,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:52,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:53,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:59:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:53,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 04:59:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:53,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 04:59:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:53,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 04:59:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:53,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:59:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:53,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 04:59:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:53,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 04:59:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:53,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 04:59:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:53,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 04:59:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:53,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 04:59:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:53,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 04:59:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:53,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 04:59:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:53,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 04:59:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:53,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 04:59:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:53,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 04:59:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 04:59:53,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:53,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875592678] [2023-11-29 04:59:53,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875592678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:59:53,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:59:53,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:59:53,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301632276] [2023-11-29 04:59:53,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:59:53,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:59:53,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:53,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:59:53,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:59:53,109 INFO L87 Difference]: Start difference. First operand 5319 states and 9112 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:59:54,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:54,938 INFO L93 Difference]: Finished difference Result 13166 states and 23038 transitions. [2023-11-29 04:59:54,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:59:54,938 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2023-11-29 04:59:54,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:54,992 INFO L225 Difference]: With dead ends: 13166 [2023-11-29 04:59:54,993 INFO L226 Difference]: Without dead ends: 8927 [2023-11-29 04:59:55,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:59:55,005 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 918 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:55,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 722 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 04:59:55,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8927 states. [2023-11-29 04:59:55,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8927 to 8852. [2023-11-29 04:59:55,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8852 states, 7264 states have (on average 1.6294052863436124) internal successors, (11836), 7271 states have internal predecessors, (11836), 1564 states have call successors, (1564), 19 states have call predecessors, (1564), 23 states have return successors, (1759), 1563 states have call predecessors, (1759), 1563 states have call successors, (1759) [2023-11-29 04:59:55,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8852 states to 8852 states and 15159 transitions. [2023-11-29 04:59:55,425 INFO L78 Accepts]: Start accepts. Automaton has 8852 states and 15159 transitions. Word has length 131 [2023-11-29 04:59:55,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:55,425 INFO L495 AbstractCegarLoop]: Abstraction has 8852 states and 15159 transitions. [2023-11-29 04:59:55,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:59:55,426 INFO L276 IsEmpty]: Start isEmpty. Operand 8852 states and 15159 transitions. [2023-11-29 04:59:55,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-29 04:59:55,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:55,455 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:59:55,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 04:59:55,455 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:55,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:55,456 INFO L85 PathProgramCache]: Analyzing trace with hash 864687747, now seen corresponding path program 1 times [2023-11-29 04:59:55,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:55,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45984266] [2023-11-29 04:59:55,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:55,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:55,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:59:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:55,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 04:59:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:55,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 04:59:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:55,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 04:59:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:55,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:59:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:55,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 04:59:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:55,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 04:59:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:55,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 04:59:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:55,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 04:59:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:55,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 04:59:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:55,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 04:59:55,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:55,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 04:59:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:55,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 04:59:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:55,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-29 04:59:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:55,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 04:59:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:55,582 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 04:59:55,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:55,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45984266] [2023-11-29 04:59:55,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45984266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:59:55,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:59:55,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:59:55,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386021355] [2023-11-29 04:59:55,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:59:55,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:59:55,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:55,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:59:55,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:59:55,585 INFO L87 Difference]: Start difference. First operand 8852 states and 15159 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:59:57,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:57,454 INFO L93 Difference]: Finished difference Result 22938 states and 40067 transitions. [2023-11-29 04:59:57,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:59:57,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2023-11-29 04:59:57,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:57,500 INFO L225 Difference]: With dead ends: 22938 [2023-11-29 04:59:57,500 INFO L226 Difference]: Without dead ends: 15599 [2023-11-29 04:59:57,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:59:57,520 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 916 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:57,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 759 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 04:59:57,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15599 states. [2023-11-29 04:59:58,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15599 to 15524. [2023-11-29 04:59:58,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15524 states, 12733 states have (on average 1.619806801225163) internal successors, (20625), 12740 states have internal predecessors, (20625), 2767 states have call successors, (2767), 19 states have call predecessors, (2767), 23 states have return successors, (3106), 2766 states have call predecessors, (3106), 2766 states have call successors, (3106) [2023-11-29 04:59:58,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15524 states to 15524 states and 26498 transitions. [2023-11-29 04:59:58,345 INFO L78 Accepts]: Start accepts. Automaton has 15524 states and 26498 transitions. Word has length 132 [2023-11-29 04:59:58,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:58,346 INFO L495 AbstractCegarLoop]: Abstraction has 15524 states and 26498 transitions. [2023-11-29 04:59:58,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 04:59:58,346 INFO L276 IsEmpty]: Start isEmpty. Operand 15524 states and 26498 transitions. [2023-11-29 04:59:58,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-29 04:59:58,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:58,377 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:59:58,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 04:59:58,377 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:58,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:58,377 INFO L85 PathProgramCache]: Analyzing trace with hash 599647990, now seen corresponding path program 1 times [2023-11-29 04:59:58,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:58,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688848654] [2023-11-29 04:59:58,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:58,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:58,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 04:59:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:58,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 04:59:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:58,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 04:59:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:58,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 04:59:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:58,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 04:59:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:58,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 04:59:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:58,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 04:59:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:58,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 04:59:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:58,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 04:59:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:58,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 04:59:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:58,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 04:59:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:58,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 04:59:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:58,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 04:59:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:58,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-29 04:59:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:58,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-29 04:59:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 04:59:58,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:58,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688848654] [2023-11-29 04:59:58,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688848654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:59:58,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:59:58,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:59:58,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215040126] [2023-11-29 04:59:58,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:59:58,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:59:58,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:58,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:59:58,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:59:58,522 INFO L87 Difference]: Start difference. First operand 15524 states and 26498 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 05:00:00,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:00:00,879 INFO L93 Difference]: Finished difference Result 41105 states and 71665 transitions. [2023-11-29 05:00:00,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:00:00,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 133 [2023-11-29 05:00:00,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:00:00,982 INFO L225 Difference]: With dead ends: 41105 [2023-11-29 05:00:00,983 INFO L226 Difference]: Without dead ends: 27714 [2023-11-29 05:00:01,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:00:01,010 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 914 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:00:01,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 703 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 05:00:01,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27714 states. [2023-11-29 05:00:02,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27714 to 27639. [2023-11-29 05:00:02,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27639 states, 22809 states have (on average 1.6156780218334867) internal successors, (36852), 22816 states have internal predecessors, (36852), 4806 states have call successors, (4806), 19 states have call predecessors, (4806), 23 states have return successors, (5419), 4805 states have call predecessors, (5419), 4805 states have call successors, (5419) [2023-11-29 05:00:02,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27639 states to 27639 states and 47077 transitions. [2023-11-29 05:00:02,738 INFO L78 Accepts]: Start accepts. Automaton has 27639 states and 47077 transitions. Word has length 133 [2023-11-29 05:00:02,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:00:02,739 INFO L495 AbstractCegarLoop]: Abstraction has 27639 states and 47077 transitions. [2023-11-29 05:00:02,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 05:00:02,739 INFO L276 IsEmpty]: Start isEmpty. Operand 27639 states and 47077 transitions. [2023-11-29 05:00:02,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-29 05:00:02,902 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:00:02,902 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:02,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 05:00:02,903 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:00:02,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:02,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1491809601, now seen corresponding path program 1 times [2023-11-29 05:00:02,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:02,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430035225] [2023-11-29 05:00:02,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:02,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:02,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:00:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:03,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:00:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:03,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:00:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:03,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:00:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:03,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 05:00:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:03,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 05:00:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:03,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 05:00:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:03,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 05:00:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:03,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 05:00:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:03,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 05:00:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:03,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 05:00:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:03,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 05:00:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:03,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-29 05:00:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:03,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-29 05:00:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:03,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 05:00:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:03,052 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 05:00:03,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:03,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430035225] [2023-11-29 05:00:03,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430035225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:03,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:03,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:00:03,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199537260] [2023-11-29 05:00:03,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:03,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:00:03,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:03,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:00:03,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:00:03,055 INFO L87 Difference]: Start difference. First operand 27639 states and 47077 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 05:00:05,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:00:05,709 INFO L93 Difference]: Finished difference Result 75297 states and 130459 transitions. [2023-11-29 05:00:05,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:00:05,711 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 134 [2023-11-29 05:00:05,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:00:05,863 INFO L225 Difference]: With dead ends: 75297 [2023-11-29 05:00:05,863 INFO L226 Difference]: Without dead ends: 50538 [2023-11-29 05:00:05,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:00:05,917 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 912 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:00:05,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 714 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 05:00:05,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50538 states. [2023-11-29 05:00:08,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50538 to 50463. [2023-11-29 05:00:08,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50463 states, 41918 states have (on average 1.6102867503220573) internal successors, (67500), 41925 states have internal predecessors, (67500), 8521 states have call successors, (8521), 19 states have call predecessors, (8521), 23 states have return successors, (9666), 8520 states have call predecessors, (9666), 8520 states have call successors, (9666) [2023-11-29 05:00:08,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50463 states to 50463 states and 85687 transitions. [2023-11-29 05:00:08,646 INFO L78 Accepts]: Start accepts. Automaton has 50463 states and 85687 transitions. Word has length 134 [2023-11-29 05:00:08,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:00:08,646 INFO L495 AbstractCegarLoop]: Abstraction has 50463 states and 85687 transitions. [2023-11-29 05:00:08,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 05:00:08,647 INFO L276 IsEmpty]: Start isEmpty. Operand 50463 states and 85687 transitions. [2023-11-29 05:00:08,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 05:00:08,713 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:00:08,713 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:08,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 05:00:08,714 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:00:08,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:08,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1810073078, now seen corresponding path program 1 times [2023-11-29 05:00:08,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:08,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025257564] [2023-11-29 05:00:08,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:08,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:08,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:00:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:08,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:00:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:08,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:00:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:08,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:00:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:08,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 05:00:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:08,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 05:00:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:08,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 05:00:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:08,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 05:00:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:08,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 05:00:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:08,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 05:00:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:08,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 05:00:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:08,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 05:00:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:08,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 05:00:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:08,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 05:00:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:08,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-29 05:00:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:08,864 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 05:00:08,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:08,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025257564] [2023-11-29 05:00:08,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025257564] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:08,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:08,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:00:08,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614177341] [2023-11-29 05:00:08,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:08,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:00:08,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:08,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:00:08,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:00:08,867 INFO L87 Difference]: Start difference. First operand 50463 states and 85687 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 05:00:13,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:00:13,468 INFO L93 Difference]: Finished difference Result 94044 states and 163365 transitions. [2023-11-29 05:00:13,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:00:13,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 135 [2023-11-29 05:00:13,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:00:13,794 INFO L225 Difference]: With dead ends: 94044 [2023-11-29 05:00:13,794 INFO L226 Difference]: Without dead ends: 93918 [2023-11-29 05:00:13,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:00:13,827 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 910 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:00:13,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 703 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 05:00:13,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93918 states. [2023-11-29 05:00:17,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93918 to 93843. [2023-11-29 05:00:17,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93843 states, 78499 states have (on average 1.6034344386552695) internal successors, (125868), 78506 states have internal predecessors, (125868), 15320 states have call successors, (15320), 19 states have call predecessors, (15320), 23 states have return successors, (17511), 15319 states have call predecessors, (17511), 15319 states have call successors, (17511) [2023-11-29 05:00:17,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93843 states to 93843 states and 158699 transitions. [2023-11-29 05:00:17,845 INFO L78 Accepts]: Start accepts. Automaton has 93843 states and 158699 transitions. Word has length 135 [2023-11-29 05:00:17,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:00:17,846 INFO L495 AbstractCegarLoop]: Abstraction has 93843 states and 158699 transitions. [2023-11-29 05:00:17,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 05:00:17,846 INFO L276 IsEmpty]: Start isEmpty. Operand 93843 states and 158699 transitions. [2023-11-29 05:00:17,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-29 05:00:17,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:00:17,900 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:17,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 05:00:17,901 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:00:17,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:17,901 INFO L85 PathProgramCache]: Analyzing trace with hash 889451906, now seen corresponding path program 1 times [2023-11-29 05:00:17,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:17,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868011705] [2023-11-29 05:00:17,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:17,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:18,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:00:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:18,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:00:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:18,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:00:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:18,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:00:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:18,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 05:00:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:18,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 05:00:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:18,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 05:00:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:18,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 05:00:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:18,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 05:00:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:18,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 05:00:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:18,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 05:00:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:18,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 05:00:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:18,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-29 05:00:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:18,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 05:00:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:18,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 05:00:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:18,416 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 05:00:18,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:18,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868011705] [2023-11-29 05:00:18,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868011705] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:00:18,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837980088] [2023-11-29 05:00:18,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:18,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:00:18,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:00:18,418 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:00:18,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:00:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:18,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:00:18,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:00:19,177 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 05:00:19,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:00:19,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837980088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:19,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:00:19,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 26 [2023-11-29 05:00:19,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19017423] [2023-11-29 05:00:19,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:19,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:00:19,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:19,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:00:19,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2023-11-29 05:00:19,180 INFO L87 Difference]: Start difference. First operand 93843 states and 158699 transitions. Second operand has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 9 states have internal predecessors, (98), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-29 05:00:25,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:00:25,863 INFO L93 Difference]: Finished difference Result 187003 states and 321745 transitions. [2023-11-29 05:00:25,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:00:25,864 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 9 states have internal predecessors, (98), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 136 [2023-11-29 05:00:25,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:00:26,741 INFO L225 Difference]: With dead ends: 187003 [2023-11-29 05:00:26,741 INFO L226 Difference]: Without dead ends: 186882 [2023-11-29 05:00:26,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=1162, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 05:00:26,786 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 674 mSDsluCounter, 3574 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 4059 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:00:26,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 4059 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 05:00:26,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186882 states. [2023-11-29 05:00:35,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186882 to 186858. [2023-11-29 05:00:35,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186858 states, 156372 states have (on average 1.6043920906556162) internal successors, (250882), 156274 states have internal predecessors, (250882), 30429 states have call successors, (30429), 50 states have call predecessors, (30429), 56 states have return successors, (38082), 30539 states have call predecessors, (38082), 30426 states have call successors, (38082) [2023-11-29 05:00:36,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186858 states to 186858 states and 319393 transitions. [2023-11-29 05:00:36,922 INFO L78 Accepts]: Start accepts. Automaton has 186858 states and 319393 transitions. Word has length 136 [2023-11-29 05:00:36,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:00:36,922 INFO L495 AbstractCegarLoop]: Abstraction has 186858 states and 319393 transitions. [2023-11-29 05:00:36,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 9 states have internal predecessors, (98), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-29 05:00:36,923 INFO L276 IsEmpty]: Start isEmpty. Operand 186858 states and 319393 transitions. [2023-11-29 05:00:37,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-29 05:00:37,041 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:00:37,041 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:37,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:00:37,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7bdd98-4108-4697-aa25-a7c181d116e5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 05:00:37,242 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:00:37,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:37,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2108028691, now seen corresponding path program 1 times [2023-11-29 05:00:37,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:37,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360272734] [2023-11-29 05:00:37,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:37,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:37,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:00:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:37,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:00:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:37,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:00:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:37,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:00:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:37,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 05:00:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:37,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 05:00:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:37,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 05:00:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:37,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 05:00:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:37,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 05:00:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:37,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 05:00:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:37,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 05:00:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:37,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 05:00:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:37,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 05:00:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:37,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 05:00:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:37,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 05:00:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 05:00:37,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:37,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360272734] [2023-11-29 05:00:37,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360272734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:37,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:37,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 05:00:37,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138097503] [2023-11-29 05:00:37,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:37,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:00:37,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:37,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:00:37,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:00:37,529 INFO L87 Difference]: Start difference. First operand 186858 states and 319393 transitions. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 6 states have internal predecessors, (89), 4 states have call successors, (17), 7 states have call predecessors, (17), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-29 05:00:46,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:00:46,798 INFO L93 Difference]: Finished difference Result 187721 states and 327201 transitions. [2023-11-29 05:00:46,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 05:00:46,798 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 6 states have internal predecessors, (89), 4 states have call successors, (17), 7 states have call predecessors, (17), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 137 [2023-11-29 05:00:46,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:00:47,464 INFO L225 Difference]: With dead ends: 187721 [2023-11-29 05:00:47,464 INFO L226 Difference]: Without dead ends: 187187 [2023-11-29 05:00:47,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2023-11-29 05:00:47,514 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 1530 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 2569 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 3103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 2569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:00:47,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 1170 Invalid, 3103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 2569 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 05:00:47,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187187 states. [2023-11-29 05:00:56,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187187 to 186949. [2023-11-29 05:00:56,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186949 states, 156434 states have (on average 1.6042676144572152) internal successors, (250962), 156338 states have internal predecessors, (250962), 30456 states have call successors, (30456), 53 states have call predecessors, (30456), 58 states have return successors, (38114), 30566 states have call predecessors, (38114), 30453 states have call successors, (38114) [2023-11-29 05:00:58,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186949 states to 186949 states and 319532 transitions. [2023-11-29 05:00:58,038 INFO L78 Accepts]: Start accepts. Automaton has 186949 states and 319532 transitions. Word has length 137 [2023-11-29 05:00:58,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:00:58,039 INFO L495 AbstractCegarLoop]: Abstraction has 186949 states and 319532 transitions. [2023-11-29 05:00:58,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 6 states have internal predecessors, (89), 4 states have call successors, (17), 7 states have call predecessors, (17), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-29 05:00:58,039 INFO L276 IsEmpty]: Start isEmpty. Operand 186949 states and 319532 transitions. [2023-11-29 05:00:58,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-29 05:00:58,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:00:58,158 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:58,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 05:00:58,158 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:00:58,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:58,158 INFO L85 PathProgramCache]: Analyzing trace with hash -2030027499, now seen corresponding path program 1 times [2023-11-29 05:00:58,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:58,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701737343] [2023-11-29 05:00:58,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:58,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:58,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:00:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:58,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:00:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:58,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:00:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:58,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:00:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:58,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 05:00:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:58,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 05:00:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:58,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 05:00:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:58,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 05:00:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:58,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 05:00:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:58,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 05:00:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:58,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 05:00:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:58,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 05:00:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:58,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 05:00:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:58,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 05:00:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:58,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 05:00:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:58,289 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 05:00:58,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:58,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701737343] [2023-11-29 05:00:58,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701737343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:58,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:58,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:00:58,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049444080] [2023-11-29 05:00:58,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:58,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:00:58,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:58,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:00:58,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:00:58,291 INFO L87 Difference]: Start difference. First operand 186949 states and 319532 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 05:01:10,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:01:10,447 INFO L93 Difference]: Finished difference Result 280689 states and 498567 transitions. [2023-11-29 05:01:10,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 05:01:10,448 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 137 [2023-11-29 05:01:10,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:01:11,425 INFO L225 Difference]: With dead ends: 280689 [2023-11-29 05:01:11,425 INFO L226 Difference]: Without dead ends: 280397 [2023-11-29 05:01:11,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2023-11-29 05:01:11,501 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 1846 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 561 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1856 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 2086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 561 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:01:11,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1856 Valid, 1104 Invalid, 2086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [561 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-29 05:01:11,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280397 states. [2023-11-29 05:01:26,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280397 to 280016. [2023-11-29 05:01:26,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280016 states, 234340 states have (on average 1.6045574805837672) internal successors, (376012), 234142 states have internal predecessors, (376012), 45583 states have call successors, (45583), 84 states have call predecessors, (45583), 92 states have return successors, (64063), 45804 states have call predecessors, (64063), 45578 states have call successors, (64063) [2023-11-29 05:01:28,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280016 states to 280016 states and 485658 transitions. [2023-11-29 05:01:28,606 INFO L78 Accepts]: Start accepts. Automaton has 280016 states and 485658 transitions. Word has length 137 [2023-11-29 05:01:28,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:01:28,607 INFO L495 AbstractCegarLoop]: Abstraction has 280016 states and 485658 transitions. [2023-11-29 05:01:28,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 05:01:28,608 INFO L276 IsEmpty]: Start isEmpty. Operand 280016 states and 485658 transitions. [2023-11-29 05:01:28,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-29 05:01:28,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:01:28,785 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:28,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 05:01:28,786 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:01:28,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:28,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1136541161, now seen corresponding path program 1 times [2023-11-29 05:01:28,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:28,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626436922] [2023-11-29 05:01:28,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:28,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:29,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:01:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:29,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:01:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:29,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:01:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:29,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:01:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:29,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 05:01:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:29,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 05:01:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:29,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 05:01:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:29,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 05:01:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:29,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 05:01:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:29,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 05:01:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:29,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 05:01:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:29,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 05:01:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:29,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 05:01:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:29,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 05:01:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:29,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 05:01:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:29,142 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 05:01:29,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:29,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626436922] [2023-11-29 05:01:29,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626436922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:29,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:29,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 05:01:29,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432091198] [2023-11-29 05:01:29,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:29,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:01:29,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:29,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:01:29,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:01:29,146 INFO L87 Difference]: Start difference. First operand 280016 states and 485658 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 05:01:45,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:01:45,048 INFO L93 Difference]: Finished difference Result 283689 states and 500944 transitions. [2023-11-29 05:01:45,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 05:01:45,049 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 137 [2023-11-29 05:01:45,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:01:46,330 INFO L225 Difference]: With dead ends: 283689 [2023-11-29 05:01:46,330 INFO L226 Difference]: Without dead ends: 283001 [2023-11-29 05:01:46,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=366, Invalid=1116, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 05:01:46,423 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 2678 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 2769 mSolverCounterSat, 853 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2678 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 3622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 853 IncrementalHoareTripleChecker+Valid, 2769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:01:46,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2678 Valid, 788 Invalid, 3622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [853 Valid, 2769 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 05:01:46,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283001 states. [2023-11-29 05:02:03,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283001 to 281858. [2023-11-29 05:02:03,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281858 states, 235703 states have (on average 1.6037767868885844) internal successors, (378015), 235562 states have internal predecessors, (378015), 45848 states have call successors, (45848), 249 states have call predecessors, (45848), 306 states have return successors, (64425), 46091 states have call predecessors, (64425), 45828 states have call successors, (64425) [2023-11-29 05:02:04,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281858 states to 281858 states and 488288 transitions. [2023-11-29 05:02:04,657 INFO L78 Accepts]: Start accepts. Automaton has 281858 states and 488288 transitions. Word has length 137 [2023-11-29 05:02:04,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:04,657 INFO L495 AbstractCegarLoop]: Abstraction has 281858 states and 488288 transitions. [2023-11-29 05:02:04,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 05:02:04,658 INFO L276 IsEmpty]: Start isEmpty. Operand 281858 states and 488288 transitions. [2023-11-29 05:02:04,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-29 05:02:04,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:04,831 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:02:04,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 05:02:04,832 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:04,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:04,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1679142597, now seen corresponding path program 1 times [2023-11-29 05:02:04,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:04,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828386570] [2023-11-29 05:02:04,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:04,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:05,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:02:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:05,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:02:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:05,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:02:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:05,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:02:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:05,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 05:02:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:05,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 05:02:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:05,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 05:02:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:05,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 05:02:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:05,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 05:02:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:05,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 05:02:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:05,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 05:02:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:05,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 05:02:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:05,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-29 05:02:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:05,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 05:02:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:05,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-29 05:02:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:05,103 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 05:02:05,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:05,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828386570] [2023-11-29 05:02:05,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828386570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:05,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:05,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 05:02:05,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603905153] [2023-11-29 05:02:05,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:05,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:02:05,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:05,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:02:05,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:02:05,106 INFO L87 Difference]: Start difference. First operand 281858 states and 488288 transitions. Second operand has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 05:02:17,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:17,913 INFO L93 Difference]: Finished difference Result 286042 states and 504465 transitions. [2023-11-29 05:02:17,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 05:02:17,914 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 138 [2023-11-29 05:02:17,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:19,084 INFO L225 Difference]: With dead ends: 286042 [2023-11-29 05:02:19,084 INFO L226 Difference]: Without dead ends: 283572 [2023-11-29 05:02:19,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2023-11-29 05:02:19,158 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 1083 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 2924 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 3374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 2924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:19,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 1353 Invalid, 3374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 2924 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 05:02:19,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283572 states. [2023-11-29 05:02:34,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283572 to 281948. [2023-11-29 05:02:34,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281948 states, 235748 states have (on average 1.603640327807659) internal successors, (378055), 235632 states have internal predecessors, (378055), 45868 states have call successors, (45868), 249 states have call predecessors, (45868), 331 states have return successors, (64493), 46111 states have call predecessors, (64493), 45848 states have call successors, (64493) [2023-11-29 05:02:35,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281948 states to 281948 states and 488416 transitions. [2023-11-29 05:02:35,684 INFO L78 Accepts]: Start accepts. Automaton has 281948 states and 488416 transitions. Word has length 138 [2023-11-29 05:02:35,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:35,685 INFO L495 AbstractCegarLoop]: Abstraction has 281948 states and 488416 transitions. [2023-11-29 05:02:35,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 05:02:35,685 INFO L276 IsEmpty]: Start isEmpty. Operand 281948 states and 488416 transitions. [2023-11-29 05:02:35,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-29 05:02:35,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:35,860 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:02:35,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 05:02:35,861 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:35,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:35,861 INFO L85 PathProgramCache]: Analyzing trace with hash -613605254, now seen corresponding path program 1 times [2023-11-29 05:02:35,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:35,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112863017] [2023-11-29 05:02:35,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:35,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:36,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:02:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:36,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:02:36,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:36,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:02:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:36,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:02:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:36,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 05:02:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:36,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 05:02:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:36,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 05:02:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:36,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 05:02:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:36,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 05:02:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:36,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 05:02:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:36,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 05:02:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:36,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 05:02:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:36,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-29 05:02:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:36,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-29 05:02:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:36,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-29 05:02:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:36,096 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 05:02:36,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:36,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112863017] [2023-11-29 05:02:36,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112863017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:36,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:36,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-29 05:02:36,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587896268] [2023-11-29 05:02:36,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:36,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 05:02:36,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:36,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 05:02:36,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:02:36,098 INFO L87 Difference]: Start difference. First operand 281948 states and 488416 transitions. Second operand has 13 states, 12 states have (on average 8.083333333333334) internal successors, (97), 8 states have internal predecessors, (97), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15)