./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu --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 b453d764da4cb622a1911439b5a79bae9155e32b42a83c5d4472e5a8d62a8d39 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:50:12,290 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:50:12,417 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:50:12,428 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:50:12,429 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:50:12,457 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:50:12,459 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:50:12,460 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:50:12,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:50:12,467 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:50:12,468 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:50:12,468 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:50:12,469 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:50:12,471 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:50:12,471 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:50:12,472 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:50:12,472 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:50:12,473 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:50:12,473 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:50:12,474 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:50:12,474 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:50:12,475 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:50:12,476 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:50:12,476 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:50:12,477 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:50:12,478 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:50:12,478 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:50:12,479 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:50:12,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:12,480 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:50:12,481 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:50:12,481 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:50:12,482 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:50:12,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:50:12,482 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:50:12,483 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:50:12,483 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:50:12,483 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:50:12,484 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:50:12,484 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_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b453d764da4cb622a1911439b5a79bae9155e32b42a83c5d4472e5a8d62a8d39 [2023-11-19 07:50:12,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:50:12,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:50:12,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:50:12,855 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:50:12,856 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:50:12,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/product-lines/email_spec0_product24.cil.c [2023-11-19 07:50:16,071 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:50:16,452 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:50:16,453 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/sv-benchmarks/c/product-lines/email_spec0_product24.cil.c [2023-11-19 07:50:16,493 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/data/03f6f6d10/56e47e57cb294b1d871904f4d30b83a2/FLAGac03e4eca [2023-11-19 07:50:16,507 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/data/03f6f6d10/56e47e57cb294b1d871904f4d30b83a2 [2023-11-19 07:50:16,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:50:16,513 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:50:16,516 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:16,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:50:16,525 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:50:16,525 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:16" (1/1) ... [2023-11-19 07:50:16,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@797d8ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:16, skipping insertion in model container [2023-11-19 07:50:16,527 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:16" (1/1) ... [2023-11-19 07:50:16,611 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:50:17,099 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_0ac72817-3348-4fa5-ab6a-c9c10036b048/sv-benchmarks/c/product-lines/email_spec0_product24.cil.c[25283,25296] [2023-11-19 07:50:17,226 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:17,242 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:50:17,256 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [48] [2023-11-19 07:50:17,258 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [460] [2023-11-19 07:50:17,258 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [689] [2023-11-19 07:50:17,258 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1036] [2023-11-19 07:50:17,259 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1332] [2023-11-19 07:50:17,259 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1341] [2023-11-19 07:50:17,259 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1707] [2023-11-19 07:50:17,259 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptForward_spec.i","") [1803] [2023-11-19 07:50:17,259 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1822] [2023-11-19 07:50:17,260 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1857] [2023-11-19 07:50:17,260 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2922] [2023-11-19 07:50:17,353 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_0ac72817-3348-4fa5-ab6a-c9c10036b048/sv-benchmarks/c/product-lines/email_spec0_product24.cil.c[25283,25296] [2023-11-19 07:50:17,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:17,452 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:50:17,460 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:50:17,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:17 WrapperNode [2023-11-19 07:50:17,461 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:17,462 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:17,463 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:50:17,463 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:50:17,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:17" (1/1) ... [2023-11-19 07:50:17,517 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:17" (1/1) ... [2023-11-19 07:50:17,597 INFO L138 Inliner]: procedures = 130, calls = 208, calls flagged for inlining = 64, calls inlined = 59, statements flattened = 1057 [2023-11-19 07:50:17,598 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:17,599 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:50:17,599 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:50:17,600 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:50:17,626 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:17" (1/1) ... [2023-11-19 07:50:17,626 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:17" (1/1) ... [2023-11-19 07:50:17,649 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:17" (1/1) ... [2023-11-19 07:50:17,650 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:17" (1/1) ... [2023-11-19 07:50:17,689 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:17" (1/1) ... [2023-11-19 07:50:17,702 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:17" (1/1) ... [2023-11-19 07:50:17,708 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:17" (1/1) ... [2023-11-19 07:50:17,721 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:17" (1/1) ... [2023-11-19 07:50:17,743 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:50:17,748 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:50:17,749 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:50:17,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:50:17,756 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:17" (1/1) ... [2023-11-19 07:50:17,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:17,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:17,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:50:17,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:50:17,844 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-19 07:50:17,845 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-19 07:50:17,845 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-19 07:50:17,846 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-19 07:50:17,846 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-19 07:50:17,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-19 07:50:17,846 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-19 07:50:17,846 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-19 07:50:17,847 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-19 07:50:17,847 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-19 07:50:17,847 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-19 07:50:17,847 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-19 07:50:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-19 07:50:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-19 07:50:17,848 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-19 07:50:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-11-19 07:50:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-11-19 07:50:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-19 07:50:17,851 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-19 07:50:17,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:50:17,852 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-19 07:50:17,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-19 07:50:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-19 07:50:17,853 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-19 07:50:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-19 07:50:17,854 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-19 07:50:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-19 07:50:17,854 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-19 07:50:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-19 07:50:17,854 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-19 07:50:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-19 07:50:17,855 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-19 07:50:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-19 07:50:17,855 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-19 07:50:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:50:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-19 07:50:17,856 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-19 07:50:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:50:17,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:50:18,147 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:50:18,150 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:50:19,138 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:50:19,163 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:50:19,164 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:50:19,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:19 BoogieIcfgContainer [2023-11-19 07:50:19,177 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:50:19,180 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:50:19,180 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:50:19,184 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:50:19,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:50:16" (1/3) ... [2023-11-19 07:50:19,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50bdd4ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:19, skipping insertion in model container [2023-11-19 07:50:19,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:17" (2/3) ... [2023-11-19 07:50:19,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50bdd4ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:19, skipping insertion in model container [2023-11-19 07:50:19,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:19" (3/3) ... [2023-11-19 07:50:19,188 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product24.cil.c [2023-11-19 07:50:19,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:50:19,209 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:50:19,272 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:50:19,279 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;@5940c4d9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:50:19,279 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:50:19,286 INFO L276 IsEmpty]: Start isEmpty. Operand has 320 states, 255 states have (on average 1.5333333333333334) internal successors, (391), 257 states have internal predecessors, (391), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-19 07:50:19,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-19 07:50:19,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:19,311 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-19 07:50:19,311 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:19,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:19,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1529654468, now seen corresponding path program 1 times [2023-11-19 07:50:19,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:19,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169542053] [2023-11-19 07:50:19,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:19,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:50:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:50:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-19 07:50:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-19 07:50:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-19 07:50:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-19 07:50:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-19 07:50:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-19 07:50:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-19 07:50:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-19 07:50:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-19 07:50:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-19 07:50:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,489 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-19 07:50:20,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:20,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169542053] [2023-11-19 07:50:20,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169542053] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:20,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781142260] [2023-11-19 07:50:20,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:20,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:20,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:20,500 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:20,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:50:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:50:20,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:20,970 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-19 07:50:20,971 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:20,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781142260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:20,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:20,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2023-11-19 07:50:20,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108782534] [2023-11-19 07:50:20,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:20,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:50:20,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:21,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:50:21,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:50:21,038 INFO L87 Difference]: Start difference. First operand has 320 states, 255 states have (on average 1.5333333333333334) internal successors, (391), 257 states have internal predecessors, (391), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 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 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 07:50:21,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:21,135 INFO L93 Difference]: Finished difference Result 481 states and 712 transitions. [2023-11-19 07:50:21,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:50:21,137 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 108 [2023-11-19 07:50:21,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:21,151 INFO L225 Difference]: With dead ends: 481 [2023-11-19 07:50:21,151 INFO L226 Difference]: Without dead ends: 313 [2023-11-19 07:50:21,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:50:21,161 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:21,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:21,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-11-19 07:50:21,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2023-11-19 07:50:21,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 249 states have (on average 1.5261044176706828) internal successors, (380), 250 states have internal predecessors, (380), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-19 07:50:21,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 471 transitions. [2023-11-19 07:50:21,242 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 471 transitions. Word has length 108 [2023-11-19 07:50:21,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:21,244 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 471 transitions. [2023-11-19 07:50:21,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 07:50:21,245 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 471 transitions. [2023-11-19 07:50:21,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-19 07:50:21,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:21,253 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-19 07:50:21,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:21,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:21,476 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:21,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:21,477 INFO L85 PathProgramCache]: Analyzing trace with hash -482448083, now seen corresponding path program 1 times [2023-11-19 07:50:21,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:21,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623985569] [2023-11-19 07:50:21,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:21,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:21,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:21,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:50:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:21,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:50:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:21,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-19 07:50:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:21,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-19 07:50:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:21,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-19 07:50:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:21,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-19 07:50:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:21,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-19 07:50:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:21,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-19 07:50:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:21,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-19 07:50:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:21,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-19 07:50:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:21,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-19 07:50:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:21,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-19 07:50:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-19 07:50:21,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:21,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623985569] [2023-11-19 07:50:21,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623985569] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:21,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798841451] [2023-11-19 07:50:21,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:21,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:21,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:21,913 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:21,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:50:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:22,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:50:22,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:22,381 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-19 07:50:22,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:22,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798841451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:22,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:22,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-19 07:50:22,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482620935] [2023-11-19 07:50:22,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:22,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:22,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:22,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:22,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:50:22,388 INFO L87 Difference]: Start difference. First operand 313 states and 471 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 07:50:22,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:22,456 INFO L93 Difference]: Finished difference Result 471 states and 693 transitions. [2023-11-19 07:50:22,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:22,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 109 [2023-11-19 07:50:22,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:22,464 INFO L225 Difference]: With dead ends: 471 [2023-11-19 07:50:22,469 INFO L226 Difference]: Without dead ends: 316 [2023-11-19 07:50:22,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:50:22,473 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 1 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:22,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 936 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:22,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-19 07:50:22,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2023-11-19 07:50:22,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 251 states have (on average 1.5219123505976095) internal successors, (382), 252 states have internal predecessors, (382), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-19 07:50:22,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 473 transitions. [2023-11-19 07:50:22,524 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 473 transitions. Word has length 109 [2023-11-19 07:50:22,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:22,527 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 473 transitions. [2023-11-19 07:50:22,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 07:50:22,528 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 473 transitions. [2023-11-19 07:50:22,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-19 07:50:22,535 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:22,535 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:22,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:22,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:22,749 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:22,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:22,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1960014467, now seen corresponding path program 1 times [2023-11-19 07:50:22,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:22,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277100370] [2023-11-19 07:50:22,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:22,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:22,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:22,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:50:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:22,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:50:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:22,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-19 07:50:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:22,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-19 07:50:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:22,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-19 07:50:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:23,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-19 07:50:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:23,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:50:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:23,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-19 07:50:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:23,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-19 07:50:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:23,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-19 07:50:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:23,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-19 07:50:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:23,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-19 07:50:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-19 07:50:23,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:23,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277100370] [2023-11-19 07:50:23,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277100370] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:23,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37909232] [2023-11-19 07:50:23,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:23,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:23,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:23,046 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:23,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:50:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:23,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:50:23,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-19 07:50:23,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:23,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37909232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:23,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:23,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-19 07:50:23,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431224593] [2023-11-19 07:50:23,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:23,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:23,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:23,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:23,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:50:23,408 INFO L87 Difference]: Start difference. First operand 315 states and 473 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 07:50:23,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:23,477 INFO L93 Difference]: Finished difference Result 665 states and 1013 transitions. [2023-11-19 07:50:23,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:23,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2023-11-19 07:50:23,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:23,484 INFO L225 Difference]: With dead ends: 665 [2023-11-19 07:50:23,485 INFO L226 Difference]: Without dead ends: 377 [2023-11-19 07:50:23,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:50:23,490 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 115 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:23,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 901 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:23,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-19 07:50:23,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 369. [2023-11-19 07:50:23,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 294 states have (on average 1.5374149659863945) internal successors, (452), 295 states have internal predecessors, (452), 57 states have call successors, (57), 17 states have call predecessors, (57), 17 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-19 07:50:23,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 565 transitions. [2023-11-19 07:50:23,529 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 565 transitions. Word has length 118 [2023-11-19 07:50:23,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:23,530 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 565 transitions. [2023-11-19 07:50:23,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 07:50:23,530 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 565 transitions. [2023-11-19 07:50:23,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-19 07:50:23,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:23,534 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:23,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:23,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:23,744 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:23,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:23,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1907956032, now seen corresponding path program 1 times [2023-11-19 07:50:23,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:23,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475124977] [2023-11-19 07:50:23,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:23,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:23,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:23,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:50:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:23,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:50:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:24,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-19 07:50:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:24,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-19 07:50:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:24,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-19 07:50:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:24,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-19 07:50:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:24,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-19 07:50:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:24,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-19 07:50:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:24,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-19 07:50:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:24,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-19 07:50:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:24,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-19 07:50:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:24,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-19 07:50:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:24,077 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-19 07:50:24,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:24,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475124977] [2023-11-19 07:50:24,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475124977] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:24,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680849846] [2023-11-19 07:50:24,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:24,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:24,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:24,080 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:24,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:50:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:24,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:50:24,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:24,562 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 07:50:24,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:24,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680849846] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:24,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:24,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-11-19 07:50:24,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906538727] [2023-11-19 07:50:24,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:24,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:24,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:24,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:24,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:50:24,569 INFO L87 Difference]: Start difference. First operand 369 states and 565 transitions. Second operand has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-19 07:50:24,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:24,684 INFO L93 Difference]: Finished difference Result 729 states and 1120 transitions. [2023-11-19 07:50:24,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:50:24,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 119 [2023-11-19 07:50:24,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:24,693 INFO L225 Difference]: With dead ends: 729 [2023-11-19 07:50:24,693 INFO L226 Difference]: Without dead ends: 371 [2023-11-19 07:50:24,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:50:24,700 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 8 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:24,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1837 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:24,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-11-19 07:50:24,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2023-11-19 07:50:24,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 295 states have (on average 1.535593220338983) internal successors, (453), 297 states have internal predecessors, (453), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 56 states have call predecessors, (58), 56 states have call successors, (58) [2023-11-19 07:50:24,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 568 transitions. [2023-11-19 07:50:24,740 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 568 transitions. Word has length 119 [2023-11-19 07:50:24,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:24,741 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 568 transitions. [2023-11-19 07:50:24,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-19 07:50:24,742 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 568 transitions. [2023-11-19 07:50:24,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-19 07:50:24,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:24,749 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:24,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:24,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:24,964 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:24,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:24,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1921687363, now seen corresponding path program 1 times [2023-11-19 07:50:24,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:24,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909813070] [2023-11-19 07:50:24,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:24,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:50:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:50:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:50:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-19 07:50:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 07:50:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-19 07:50:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-19 07:50:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-19 07:50:25,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-19 07:50:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-19 07:50:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-19 07:50:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-19 07:50:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-19 07:50:25,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:25,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909813070] [2023-11-19 07:50:25,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909813070] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:25,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260769990] [2023-11-19 07:50:25,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:25,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:25,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:25,324 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:25,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:50:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 1117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:50:25,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 07:50:25,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:25,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260769990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:25,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:25,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-11-19 07:50:25,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580670204] [2023-11-19 07:50:25,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:25,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:25,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:25,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:25,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:50:25,781 INFO L87 Difference]: Start difference. First operand 371 states and 568 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-19 07:50:25,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:25,877 INFO L93 Difference]: Finished difference Result 731 states and 1125 transitions. [2023-11-19 07:50:25,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:50:25,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2023-11-19 07:50:25,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:25,882 INFO L225 Difference]: With dead ends: 731 [2023-11-19 07:50:25,882 INFO L226 Difference]: Without dead ends: 373 [2023-11-19 07:50:25,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:50:25,885 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 8 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:25,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1823 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:25,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-19 07:50:25,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2023-11-19 07:50:25,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 296 states have (on average 1.5337837837837838) internal successors, (454), 299 states have internal predecessors, (454), 57 states have call successors, (57), 17 states have call predecessors, (57), 19 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2023-11-19 07:50:25,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 574 transitions. [2023-11-19 07:50:25,917 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 574 transitions. Word has length 120 [2023-11-19 07:50:25,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:25,919 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 574 transitions. [2023-11-19 07:50:25,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-19 07:50:25,919 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 574 transitions. [2023-11-19 07:50:25,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-19 07:50:25,922 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:25,922 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:25,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:26,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:26,136 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:26,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:26,137 INFO L85 PathProgramCache]: Analyzing trace with hash 417807318, now seen corresponding path program 1 times [2023-11-19 07:50:26,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:26,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493735489] [2023-11-19 07:50:26,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:26,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:26,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:26,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:50:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:26,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:50:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:26,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:50:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:26,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:50:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:26,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-19 07:50:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:26,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-19 07:50:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:26,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-19 07:50:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:26,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-19 07:50:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:26,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-19 07:50:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:26,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-19 07:50:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:26,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-19 07:50:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:26,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-19 07:50:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:26,402 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-19 07:50:26,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:26,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493735489] [2023-11-19 07:50:26,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493735489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:26,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:26,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:50:26,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942409635] [2023-11-19 07:50:26,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:26,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:50:26,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:26,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:50:26,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:50:26,406 INFO L87 Difference]: Start difference. First operand 373 states and 574 transitions. Second operand has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-19 07:50:28,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:28,985 INFO L93 Difference]: Finished difference Result 920 states and 1423 transitions. [2023-11-19 07:50:28,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:50:28,986 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 121 [2023-11-19 07:50:28,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:28,992 INFO L225 Difference]: With dead ends: 920 [2023-11-19 07:50:28,992 INFO L226 Difference]: Without dead ends: 570 [2023-11-19 07:50:28,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:50:28,995 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 1056 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 2555 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 2555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:28,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 1166 Invalid, 2866 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [311 Valid, 2555 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-19 07:50:28,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2023-11-19 07:50:29,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 373. [2023-11-19 07:50:29,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 296 states have (on average 1.5337837837837838) internal successors, (454), 299 states have internal predecessors, (454), 57 states have call successors, (57), 17 states have call predecessors, (57), 19 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2023-11-19 07:50:29,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 573 transitions. [2023-11-19 07:50:29,078 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 573 transitions. Word has length 121 [2023-11-19 07:50:29,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:29,078 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 573 transitions. [2023-11-19 07:50:29,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-19 07:50:29,079 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 573 transitions. [2023-11-19 07:50:29,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-19 07:50:29,082 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:29,082 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:29,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:50:29,083 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:29,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:29,084 INFO L85 PathProgramCache]: Analyzing trace with hash -672973775, now seen corresponding path program 2 times [2023-11-19 07:50:29,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:29,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898702369] [2023-11-19 07:50:29,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:29,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:29,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:29,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:50:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:29,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:50:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:29,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:50:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:29,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:50:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:29,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-19 07:50:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:29,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-19 07:50:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:29,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-19 07:50:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:29,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-19 07:50:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:29,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-19 07:50:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:29,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-19 07:50:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:29,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-19 07:50:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:29,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-19 07:50:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:29,366 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-19 07:50:29,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:29,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898702369] [2023-11-19 07:50:29,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898702369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:29,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:29,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:50:29,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967023786] [2023-11-19 07:50:29,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:29,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:50:29,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:29,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:50:29,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:50:29,370 INFO L87 Difference]: Start difference. First operand 373 states and 573 transitions. Second operand has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-19 07:50:31,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:31,857 INFO L93 Difference]: Finished difference Result 922 states and 1426 transitions. [2023-11-19 07:50:31,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:50:31,857 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 122 [2023-11-19 07:50:31,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:31,862 INFO L225 Difference]: With dead ends: 922 [2023-11-19 07:50:31,862 INFO L226 Difference]: Without dead ends: 572 [2023-11-19 07:50:31,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:50:31,866 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 1033 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 2661 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 2951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 2661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:31,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1166 Invalid, 2951 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [290 Valid, 2661 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-19 07:50:31,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2023-11-19 07:50:31,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 375. [2023-11-19 07:50:31,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 297 states have (on average 1.531986531986532) internal successors, (455), 301 states have internal predecessors, (455), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (64), 56 states have call predecessors, (64), 56 states have call successors, (64) [2023-11-19 07:50:31,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 576 transitions. [2023-11-19 07:50:31,915 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 576 transitions. Word has length 122 [2023-11-19 07:50:31,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:31,916 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 576 transitions. [2023-11-19 07:50:31,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-19 07:50:31,916 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 576 transitions. [2023-11-19 07:50:31,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-19 07:50:31,919 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:31,919 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:31,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:50:31,920 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:31,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:31,920 INFO L85 PathProgramCache]: Analyzing trace with hash -31932419, now seen corresponding path program 1 times [2023-11-19 07:50:31,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:31,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227671069] [2023-11-19 07:50:31,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:31,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:32,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:32,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:50:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:32,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:50:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:32,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:50:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:32,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:50:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:32,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 07:50:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:32,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:50:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:32,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-19 07:50:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:32,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-19 07:50:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:32,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-19 07:50:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:32,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-19 07:50:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:32,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-19 07:50:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:32,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-19 07:50:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:32,227 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-19 07:50:32,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:32,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227671069] [2023-11-19 07:50:32,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227671069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:32,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:32,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:50:32,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692126145] [2023-11-19 07:50:32,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:32,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:50:32,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:32,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:50:32,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:50:32,229 INFO L87 Difference]: Start difference. First operand 375 states and 576 transitions. Second operand has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-19 07:50:34,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:34,672 INFO L93 Difference]: Finished difference Result 922 states and 1425 transitions. [2023-11-19 07:50:34,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:50:34,672 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 123 [2023-11-19 07:50:34,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:34,677 INFO L225 Difference]: With dead ends: 922 [2023-11-19 07:50:34,677 INFO L226 Difference]: Without dead ends: 572 [2023-11-19 07:50:34,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:50:34,680 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 1077 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:34,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 1166 Invalid, 2776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-19 07:50:34,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2023-11-19 07:50:34,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 375. [2023-11-19 07:50:34,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 297 states have (on average 1.531986531986532) internal successors, (455), 301 states have internal predecessors, (455), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (64), 56 states have call predecessors, (64), 56 states have call successors, (64) [2023-11-19 07:50:34,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 576 transitions. [2023-11-19 07:50:34,721 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 576 transitions. Word has length 123 [2023-11-19 07:50:34,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:34,721 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 576 transitions. [2023-11-19 07:50:34,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-19 07:50:34,722 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 576 transitions. [2023-11-19 07:50:34,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-19 07:50:34,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:34,725 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:34,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:50:34,725 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:34,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:34,726 INFO L85 PathProgramCache]: Analyzing trace with hash 554343803, now seen corresponding path program 1 times [2023-11-19 07:50:34,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:34,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136960399] [2023-11-19 07:50:34,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:34,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:34,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:34,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:50:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:34,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:50:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:34,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:50:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:34,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:50:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:34,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 07:50:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:34,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:50:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:34,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-19 07:50:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:34,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-19 07:50:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:34,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-19 07:50:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:34,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-19 07:50:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:34,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-19 07:50:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:34,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-19 07:50:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-19 07:50:34,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:34,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136960399] [2023-11-19 07:50:34,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136960399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:34,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:34,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-19 07:50:34,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052522640] [2023-11-19 07:50:34,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:34,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:50:34,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:34,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:50:34,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:50:34,998 INFO L87 Difference]: Start difference. First operand 375 states and 576 transitions. Second operand has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-19 07:50:38,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:38,290 INFO L93 Difference]: Finished difference Result 920 states and 1420 transitions. [2023-11-19 07:50:38,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:50:38,291 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 123 [2023-11-19 07:50:38,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:38,296 INFO L225 Difference]: With dead ends: 920 [2023-11-19 07:50:38,296 INFO L226 Difference]: Without dead ends: 572 [2023-11-19 07:50:38,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:50:38,301 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 1093 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 4055 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 4374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 4055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:38,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 1610 Invalid, 4374 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [319 Valid, 4055 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-19 07:50:38,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2023-11-19 07:50:38,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 375. [2023-11-19 07:50:38,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 297 states have (on average 1.531986531986532) internal successors, (455), 301 states have internal predecessors, (455), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2023-11-19 07:50:38,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 575 transitions. [2023-11-19 07:50:38,348 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 575 transitions. Word has length 123 [2023-11-19 07:50:38,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:38,350 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 575 transitions. [2023-11-19 07:50:38,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-19 07:50:38,350 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 575 transitions. [2023-11-19 07:50:38,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-19 07:50:38,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:38,355 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:38,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:50:38,355 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:38,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:38,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1074969378, now seen corresponding path program 2 times [2023-11-19 07:50:38,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:38,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901855724] [2023-11-19 07:50:38,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:38,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:38,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:38,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:50:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:38,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:50:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:38,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:50:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:38,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:50:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:38,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 07:50:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:38,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-19 07:50:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:38,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-19 07:50:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:38,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-19 07:50:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:38,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-19 07:50:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:38,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-19 07:50:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:38,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-19 07:50:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:38,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-19 07:50:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:38,711 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-19 07:50:38,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:38,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901855724] [2023-11-19 07:50:38,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901855724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:38,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:38,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-19 07:50:38,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336045814] [2023-11-19 07:50:38,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:38,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:50:38,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:38,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:50:38,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:50:38,714 INFO L87 Difference]: Start difference. First operand 375 states and 575 transitions. Second operand has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-19 07:50:42,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:42,000 INFO L93 Difference]: Finished difference Result 922 states and 1426 transitions. [2023-11-19 07:50:42,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:50:42,001 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 124 [2023-11-19 07:50:42,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:42,006 INFO L225 Difference]: With dead ends: 922 [2023-11-19 07:50:42,006 INFO L226 Difference]: Without dead ends: 574 [2023-11-19 07:50:42,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:50:42,009 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 1066 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 4239 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1067 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 4555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 4239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:42,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1067 Valid, 1611 Invalid, 4555 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [316 Valid, 4239 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-19 07:50:42,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2023-11-19 07:50:42,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 377. [2023-11-19 07:50:42,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 298 states have (on average 1.5302013422818792) internal successors, (456), 303 states have internal predecessors, (456), 57 states have call successors, (57), 17 states have call predecessors, (57), 21 states have return successors, (68), 56 states have call predecessors, (68), 56 states have call successors, (68) [2023-11-19 07:50:42,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 581 transitions. [2023-11-19 07:50:42,049 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 581 transitions. Word has length 124 [2023-11-19 07:50:42,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:42,049 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 581 transitions. [2023-11-19 07:50:42,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-19 07:50:42,050 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 581 transitions. [2023-11-19 07:50:42,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-19 07:50:42,052 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:42,053 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:42,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:50:42,053 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:42,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:42,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1606301664, now seen corresponding path program 1 times [2023-11-19 07:50:42,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:42,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702430420] [2023-11-19 07:50:42,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:42,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:42,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:42,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:50:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:42,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:50:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:42,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:50:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:42,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:50:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:42,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 07:50:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:42,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-19 07:50:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:42,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-19 07:50:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:42,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-19 07:50:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:42,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-19 07:50:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:42,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-19 07:50:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:42,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-19 07:50:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:42,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-19 07:50:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:42,389 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 07:50:42,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:42,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702430420] [2023-11-19 07:50:42,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702430420] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:42,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922534366] [2023-11-19 07:50:42,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:42,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:42,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:42,391 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:42,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:50:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:42,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:50:42,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:42,773 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-19 07:50:42,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:42,893 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-19 07:50:42,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922534366] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:42,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:42,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2023-11-19 07:50:42,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277269157] [2023-11-19 07:50:42,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:42,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 07:50:42,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:42,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 07:50:42,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:50:42,904 INFO L87 Difference]: Start difference. First operand 377 states and 581 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, (32), 6 states have call predecessors, (32), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2023-11-19 07:50:46,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:46,158 INFO L93 Difference]: Finished difference Result 1297 states and 2098 transitions. [2023-11-19 07:50:46,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-19 07:50:46,159 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, (32), 6 states have call predecessors, (32), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 125 [2023-11-19 07:50:46,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:46,167 INFO L225 Difference]: With dead ends: 1297 [2023-11-19 07:50:46,167 INFO L226 Difference]: Without dead ends: 951 [2023-11-19 07:50:46,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2023-11-19 07:50:46,171 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 2383 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 3893 mSolverCounterSat, 687 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 4580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 3893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:46,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2401 Valid, 1751 Invalid, 4580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 3893 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-19 07:50:46,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2023-11-19 07:50:46,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 730. [2023-11-19 07:50:46,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 587 states have (on average 1.5792163543441227) internal successors, (927), 592 states have internal predecessors, (927), 121 states have call successors, (121), 17 states have call predecessors, (121), 21 states have return successors, (142), 120 states have call predecessors, (142), 120 states have call successors, (142) [2023-11-19 07:50:46,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1190 transitions. [2023-11-19 07:50:46,231 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1190 transitions. Word has length 125 [2023-11-19 07:50:46,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:46,231 INFO L495 AbstractCegarLoop]: Abstraction has 730 states and 1190 transitions. [2023-11-19 07:50:46,232 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, (32), 6 states have call predecessors, (32), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2023-11-19 07:50:46,232 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1190 transitions. [2023-11-19 07:50:46,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-19 07:50:46,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:46,237 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:46,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-19 07:50:46,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac72817-3348-4fa5-ab6a-c9c10036b048/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:46,460 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:46,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:46,460 INFO L85 PathProgramCache]: Analyzing trace with hash 199909962, now seen corresponding path program 1 times [2023-11-19 07:50:46,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:46,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769283278] [2023-11-19 07:50:46,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:46,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:46,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:46,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:50:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:46,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:50:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:46,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:50:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:46,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:50:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:46,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 07:50:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:46,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-19 07:50:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:46,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-19 07:50:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:46,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-19 07:50:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:46,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-19 07:50:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:46,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-19 07:50:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:46,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-19 07:50:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:46,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-19 07:50:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-19 07:50:46,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:46,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769283278] [2023-11-19 07:50:46,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769283278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:46,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:46,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:50:46,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320781407] [2023-11-19 07:50:46,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:46,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:50:46,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:46,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:50:46,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:46,609 INFO L87 Difference]: Start difference. First operand 730 states and 1190 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 07:50:48,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:48,496 INFO L93 Difference]: Finished difference Result 1912 states and 3177 transitions. [2023-11-19 07:50:48,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:50:48,496 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2023-11-19 07:50:48,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:48,507 INFO L225 Difference]: With dead ends: 1912 [2023-11-19 07:50:48,507 INFO L226 Difference]: Without dead ends: 1260 [2023-11-19 07:50:48,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:50:48,512 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 1170 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 1863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:48,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1185 Valid, 887 Invalid, 1863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-19 07:50:48,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2023-11-19 07:50:48,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1055. [2023-11-19 07:50:48,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 848 states have (on average 1.5943396226415094) internal successors, (1352), 853 states have internal predecessors, (1352), 185 states have call successors, (185), 17 states have call predecessors, (185), 21 states have return successors, (216), 184 states have call predecessors, (216), 184 states have call successors, (216) [2023-11-19 07:50:48,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1753 transitions. [2023-11-19 07:50:48,591 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1753 transitions. Word has length 128 [2023-11-19 07:50:48,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:48,591 INFO L495 AbstractCegarLoop]: Abstraction has 1055 states and 1753 transitions. [2023-11-19 07:50:48,592 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 07:50:48,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1753 transitions. [2023-11-19 07:50:48,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-19 07:50:48,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:48,600 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:48,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:50:48,600 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:48,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:48,601 INFO L85 PathProgramCache]: Analyzing trace with hash -409934556, now seen corresponding path program 1 times [2023-11-19 07:50:48,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:48,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014888945] [2023-11-19 07:50:48,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:48,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:48,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:48,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:50:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:48,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:50:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:48,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:50:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:48,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:50:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:48,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 07:50:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:48,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-19 07:50:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:48,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-19 07:50:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:48,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-19 07:50:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:48,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-19 07:50:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:48,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-19 07:50:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:48,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-19 07:50:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:48,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-19 07:50:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:48,725 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-19 07:50:48,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:48,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014888945] [2023-11-19 07:50:48,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014888945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:48,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:48,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:50:48,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988500640] [2023-11-19 07:50:48,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:48,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:50:48,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:48,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:50:48,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:48,728 INFO L87 Difference]: Start difference. First operand 1055 states and 1753 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 07:50:50,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:50,509 INFO L93 Difference]: Finished difference Result 2717 states and 4561 transitions. [2023-11-19 07:50:50,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:50:50,510 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2023-11-19 07:50:50,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:50,524 INFO L225 Difference]: With dead ends: 2717 [2023-11-19 07:50:50,524 INFO L226 Difference]: Without dead ends: 1793 [2023-11-19 07:50:50,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:50:50,530 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 1191 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:50,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 860 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-19 07:50:50,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2023-11-19 07:50:50,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1588. [2023-11-19 07:50:50,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1286 states have (on average 1.6003110419906688) internal successors, (2058), 1291 states have internal predecessors, (2058), 280 states have call successors, (280), 17 states have call predecessors, (280), 21 states have return successors, (311), 279 states have call predecessors, (311), 279 states have call successors, (311) [2023-11-19 07:50:50,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2649 transitions. [2023-11-19 07:50:50,645 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2649 transitions. Word has length 129 [2023-11-19 07:50:50,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:50,645 INFO L495 AbstractCegarLoop]: Abstraction has 1588 states and 2649 transitions. [2023-11-19 07:50:50,646 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 07:50:50,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2649 transitions. [2023-11-19 07:50:50,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-19 07:50:50,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:50,658 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:50,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:50:50,658 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:50,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:50,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1950710404, now seen corresponding path program 1 times [2023-11-19 07:50:50,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:50,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466387387] [2023-11-19 07:50:50,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:50,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:50,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:50,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:50:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:50,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:50:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:50,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:50:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:50,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:50:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:50,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 07:50:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:50,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-19 07:50:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:50,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-19 07:50:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:50,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-19 07:50:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:50,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-19 07:50:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:50,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-19 07:50:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:50,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-19 07:50:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:50,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-19 07:50:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:50,788 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-19 07:50:50,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:50,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466387387] [2023-11-19 07:50:50,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466387387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:50,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:50,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:50:50,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328512520] [2023-11-19 07:50:50,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:50,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:50:50,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:50,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:50:50,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:50,792 INFO L87 Difference]: Start difference. First operand 1588 states and 2649 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 07:50:52,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:52,559 INFO L93 Difference]: Finished difference Result 3924 states and 6647 transitions. [2023-11-19 07:50:52,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:50:52,560 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2023-11-19 07:50:52,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:52,579 INFO L225 Difference]: With dead ends: 3924 [2023-11-19 07:50:52,579 INFO L226 Difference]: Without dead ends: 2602 [2023-11-19 07:50:52,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:50:52,587 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 1167 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:52,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1183 Valid, 851 Invalid, 1817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-19 07:50:52,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2023-11-19 07:50:52,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2397. [2023-11-19 07:50:52,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2397 states, 1972 states have (on average 1.604969574036511) internal successors, (3165), 1977 states have internal predecessors, (3165), 403 states have call successors, (403), 17 states have call predecessors, (403), 21 states have return successors, (450), 402 states have call predecessors, (450), 402 states have call successors, (450) [2023-11-19 07:50:52,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 4018 transitions. [2023-11-19 07:50:52,741 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 4018 transitions. Word has length 130 [2023-11-19 07:50:52,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:52,742 INFO L495 AbstractCegarLoop]: Abstraction has 2397 states and 4018 transitions. [2023-11-19 07:50:52,742 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 07:50:52,742 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 4018 transitions. [2023-11-19 07:50:52,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-19 07:50:52,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:52,758 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:52,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:50:52,759 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:52,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:52,759 INFO L85 PathProgramCache]: Analyzing trace with hash 2048055011, now seen corresponding path program 1 times [2023-11-19 07:50:52,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:52,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807575716] [2023-11-19 07:50:52,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:52,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:52,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:52,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:50:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:52,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:50:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:52,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:50:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:52,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:50:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:52,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 07:50:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:52,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-19 07:50:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:52,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-19 07:50:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:52,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-19 07:50:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:52,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-19 07:50:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:52,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-19 07:50:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:52,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-19 07:50:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:52,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-19 07:50:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:52,939 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-19 07:50:52,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:52,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807575716] [2023-11-19 07:50:52,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807575716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:52,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:52,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:50:52,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819424375] [2023-11-19 07:50:52,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:52,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:50:52,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:52,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:50:52,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:52,942 INFO L87 Difference]: Start difference. First operand 2397 states and 4018 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 07:50:54,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:54,753 INFO L93 Difference]: Finished difference Result 5808 states and 9907 transitions. [2023-11-19 07:50:54,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:50:54,753 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 131 [2023-11-19 07:50:54,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:54,783 INFO L225 Difference]: With dead ends: 5808 [2023-11-19 07:50:54,784 INFO L226 Difference]: Without dead ends: 3896 [2023-11-19 07:50:54,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:50:54,793 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 1157 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:54,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 851 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-19 07:50:54,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2023-11-19 07:50:55,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3691. [2023-11-19 07:50:55,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3691 states, 3087 states have (on average 1.6077097505668934) internal successors, (4963), 3092 states have internal predecessors, (4963), 582 states have call successors, (582), 17 states have call predecessors, (582), 21 states have return successors, (655), 581 states have call predecessors, (655), 581 states have call successors, (655) [2023-11-19 07:50:55,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 6200 transitions. [2023-11-19 07:50:55,054 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 6200 transitions. Word has length 131 [2023-11-19 07:50:55,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:55,055 INFO L495 AbstractCegarLoop]: Abstraction has 3691 states and 6200 transitions. [2023-11-19 07:50:55,055 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 07:50:55,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 6200 transitions. [2023-11-19 07:50:55,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-19 07:50:55,074 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:55,075 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:55,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:50:55,075 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:55,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:55,076 INFO L85 PathProgramCache]: Analyzing trace with hash 536030400, now seen corresponding path program 1 times [2023-11-19 07:50:55,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:55,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515906434] [2023-11-19 07:50:55,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:55,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:55,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:55,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:50:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:55,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:50:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:55,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:50:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:55,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:50:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:55,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 07:50:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:55,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-19 07:50:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:55,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-19 07:50:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:55,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-19 07:50:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:55,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-19 07:50:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:55,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-19 07:50:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:55,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-19 07:50:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:55,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-19 07:50:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:55,207 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-19 07:50:55,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:55,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515906434] [2023-11-19 07:50:55,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515906434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:55,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:55,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:50:55,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739678307] [2023-11-19 07:50:55,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:55,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:50:55,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:55,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:50:55,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:55,210 INFO L87 Difference]: Start difference. First operand 3691 states and 6200 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 07:50:57,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:57,114 INFO L93 Difference]: Finished difference Result 8911 states and 15271 transitions. [2023-11-19 07:50:57,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:50:57,115 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2023-11-19 07:50:57,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:57,160 INFO L225 Difference]: With dead ends: 8911 [2023-11-19 07:50:57,161 INFO L226 Difference]: Without dead ends: 6037 [2023-11-19 07:50:57,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:50:57,177 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 1153 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 1891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:57,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 887 Invalid, 1891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 1531 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-19 07:50:57,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6037 states. [2023-11-19 07:50:57,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6037 to 5832. [2023-11-19 07:50:57,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5832 states, 4852 states have (on average 1.6011953833470733) internal successors, (7769), 4857 states have internal predecessors, (7769), 958 states have call successors, (958), 17 states have call predecessors, (958), 21 states have return successors, (1075), 957 states have call predecessors, (1075), 957 states have call successors, (1075) [2023-11-19 07:50:57,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5832 states to 5832 states and 9802 transitions. [2023-11-19 07:50:57,644 INFO L78 Accepts]: Start accepts. Automaton has 5832 states and 9802 transitions. Word has length 132 [2023-11-19 07:50:57,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:57,645 INFO L495 AbstractCegarLoop]: Abstraction has 5832 states and 9802 transitions. [2023-11-19 07:50:57,646 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 07:50:57,646 INFO L276 IsEmpty]: Start isEmpty. Operand 5832 states and 9802 transitions. [2023-11-19 07:50:57,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-19 07:50:57,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:57,678 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:57,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:50:57,678 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:57,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:57,679 INFO L85 PathProgramCache]: Analyzing trace with hash -507233377, now seen corresponding path program 1 times [2023-11-19 07:50:57,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:57,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378928752] [2023-11-19 07:50:57,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:57,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:57,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:57,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:50:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:57,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:50:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:57,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:50:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:57,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:50:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:57,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 07:50:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:57,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-19 07:50:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:57,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-19 07:50:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:57,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-19 07:50:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:57,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-19 07:50:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:57,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-19 07:50:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:57,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-19 07:50:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:57,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-19 07:50:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:57,826 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-19 07:50:57,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:57,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378928752] [2023-11-19 07:50:57,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378928752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:57,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:57,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:50:57,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412309207] [2023-11-19 07:50:57,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:57,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:50:57,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:57,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:50:57,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:57,829 INFO L87 Difference]: Start difference. First operand 5832 states and 9802 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 07:50:59,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:59,847 INFO L93 Difference]: Finished difference Result 14528 states and 24884 transitions. [2023-11-19 07:50:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:50:59,847 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2023-11-19 07:50:59,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:59,903 INFO L225 Difference]: With dead ends: 14528 [2023-11-19 07:50:59,903 INFO L226 Difference]: Without dead ends: 9915 [2023-11-19 07:50:59,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:50:59,921 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 1159 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:59,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 852 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-19 07:50:59,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9915 states. [2023-11-19 07:51:00,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9915 to 9710. [2023-11-19 07:51:00,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9710 states, 8124 states have (on average 1.5987198424421467) internal successors, (12988), 8129 states have internal predecessors, (12988), 1564 states have call successors, (1564), 17 states have call predecessors, (1564), 21 states have return successors, (1759), 1563 states have call predecessors, (1759), 1563 states have call successors, (1759) [2023-11-19 07:51:00,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9710 states to 9710 states and 16311 transitions. [2023-11-19 07:51:00,526 INFO L78 Accepts]: Start accepts. Automaton has 9710 states and 16311 transitions. Word has length 133 [2023-11-19 07:51:00,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:00,527 INFO L495 AbstractCegarLoop]: Abstraction has 9710 states and 16311 transitions. [2023-11-19 07:51:00,527 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 07:51:00,527 INFO L276 IsEmpty]: Start isEmpty. Operand 9710 states and 16311 transitions. [2023-11-19 07:51:00,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-19 07:51:00,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:00,565 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:00,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 07:51:00,566 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:00,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:00,566 INFO L85 PathProgramCache]: Analyzing trace with hash -318072430, now seen corresponding path program 1 times [2023-11-19 07:51:00,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:00,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680351140] [2023-11-19 07:51:00,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:00,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:00,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:51:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:00,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:51:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:00,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:51:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:00,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:51:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:00,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:51:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:00,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 07:51:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:00,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-19 07:51:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:00,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-19 07:51:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:00,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-19 07:51:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:00,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-19 07:51:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:00,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-19 07:51:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:00,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-19 07:51:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:00,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-19 07:51:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:00,715 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-19 07:51:00,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:00,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680351140] [2023-11-19 07:51:00,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680351140] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:00,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:00,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:51:00,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131588735] [2023-11-19 07:51:00,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:00,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:51:00,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:00,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:51:00,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:51:00,719 INFO L87 Difference]: Start difference. First operand 9710 states and 16311 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13)