./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU --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 e61661fc2d58041f16237a6d2ff2f3d5f72c7660b85c9fdf3f096a51b709ec23 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:19:11,461 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:19:11,552 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:19:11,559 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:19:11,560 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:19:11,595 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:19:11,597 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:19:11,598 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:19:11,599 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:19:11,600 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:19:11,601 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:19:11,601 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:19:11,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:19:11,604 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:19:11,605 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:19:11,605 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:19:11,606 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:19:11,606 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:19:11,606 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:19:11,607 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:19:11,611 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:19:11,612 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:19:11,612 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:19:11,612 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:19:11,613 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:19:11,613 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:19:11,613 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:19:11,613 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:19:11,614 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:19:11,614 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:19:11,614 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:19:11,614 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:19:11,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:19:11,617 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:19:11,617 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:19:11,617 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:19:11,618 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:19:11,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:19:11,619 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:19:11,620 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:19:11,620 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:19:11,620 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:19:11,621 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_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e61661fc2d58041f16237a6d2ff2f3d5f72c7660b85c9fdf3f096a51b709ec23 [2024-10-31 22:19:11,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:19:11,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:19:11,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:19:11,937 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:19:11,938 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:19:11,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/product-lines/email_spec6_product22.cil.c Unable to find full path for "g++" [2024-10-31 22:19:13,967 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:19:14,280 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:19:14,282 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c [2024-10-31 22:19:14,310 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/data/5fc7bbfc8/88ce64ea8f6b473a8755eec26209cfe0/FLAGa244fbecb [2024-10-31 22:19:14,329 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/data/5fc7bbfc8/88ce64ea8f6b473a8755eec26209cfe0 [2024-10-31 22:19:14,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:19:14,337 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:19:14,338 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:19:14,340 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:19:14,346 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:19:14,347 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:19:14" (1/1) ... [2024-10-31 22:19:14,348 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f32f29b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:14, skipping insertion in model container [2024-10-31 22:19:14,348 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:19:14" (1/1) ... [2024-10-31 22:19:14,425 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:19:14,949 WARN L251 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_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c[21483,21496] [2024-10-31 22:19:15,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:19:15,190 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:19:15,203 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [48] [2024-10-31 22:19:15,205 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [460] [2024-10-31 22:19:15,205 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [509] [2024-10-31 22:19:15,206 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [875] [2024-10-31 22:19:15,206 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptDecrypt_spec.i","") [893] [2024-10-31 22:19:15,206 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [943] [2024-10-31 22:19:15,206 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [952] [2024-10-31 22:19:15,207 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2031] [2024-10-31 22:19:15,208 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2260] [2024-10-31 22:19:15,208 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2551] [2024-10-31 22:19:15,209 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2850] [2024-10-31 22:19:15,271 WARN L251 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_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c[21483,21496] [2024-10-31 22:19:15,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:19:15,406 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:19:15,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:15 WrapperNode [2024-10-31 22:19:15,407 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:19:15,408 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:19:15,409 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:19:15,409 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:19:15,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:15" (1/1) ... [2024-10-31 22:19:15,440 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:15" (1/1) ... [2024-10-31 22:19:15,506 INFO L138 Inliner]: procedures = 129, calls = 195, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 1012 [2024-10-31 22:19:15,506 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:19:15,507 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:19:15,507 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:19:15,508 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:19:15,520 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:15" (1/1) ... [2024-10-31 22:19:15,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:15" (1/1) ... [2024-10-31 22:19:15,527 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:15" (1/1) ... [2024-10-31 22:19:15,571 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2024-10-31 22:19:15,571 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:15" (1/1) ... [2024-10-31 22:19:15,571 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:15" (1/1) ... [2024-10-31 22:19:15,587 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:15" (1/1) ... [2024-10-31 22:19:15,596 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:15" (1/1) ... [2024-10-31 22:19:15,604 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:15" (1/1) ... [2024-10-31 22:19:15,612 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:15" (1/1) ... [2024-10-31 22:19:15,627 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:19:15,632 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:19:15,632 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:19:15,632 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:19:15,633 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:15" (1/1) ... [2024-10-31 22:19:15,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:19:15,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:15,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:19:15,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:19:15,732 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-10-31 22:19:15,732 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-10-31 22:19:15,732 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-10-31 22:19:15,733 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-10-31 22:19:15,733 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-10-31 22:19:15,733 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-10-31 22:19:15,734 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-10-31 22:19:15,734 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-10-31 22:19:15,734 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-10-31 22:19:15,734 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-10-31 22:19:15,734 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-10-31 22:19:15,734 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-10-31 22:19:15,734 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-10-31 22:19:15,734 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-10-31 22:19:15,735 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-10-31 22:19:15,735 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-10-31 22:19:15,735 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-10-31 22:19:15,736 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-10-31 22:19:15,736 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2024-10-31 22:19:15,737 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2024-10-31 22:19:15,737 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-10-31 22:19:15,737 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-10-31 22:19:15,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:19:15,737 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-10-31 22:19:15,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-10-31 22:19:15,737 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-10-31 22:19:15,738 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-10-31 22:19:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-10-31 22:19:15,738 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-10-31 22:19:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-10-31 22:19:15,738 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-10-31 22:19:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-10-31 22:19:15,738 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-10-31 22:19:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-10-31 22:19:15,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-10-31 22:19:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-10-31 22:19:15,739 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-10-31 22:19:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-10-31 22:19:15,739 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-10-31 22:19:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:19:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:19:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:19:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 22:19:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-10-31 22:19:15,739 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-10-31 22:19:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:19:15,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:19:15,995 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:19:16,001 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:19:17,213 INFO L? ?]: Removed 434 outVars from TransFormulas that were not future-live. [2024-10-31 22:19:17,213 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:19:17,234 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:19:17,235 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:19:17,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:19:17 BoogieIcfgContainer [2024-10-31 22:19:17,235 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:19:17,241 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:19:17,241 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:19:17,245 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:19:17,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:19:14" (1/3) ... [2024-10-31 22:19:17,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f01bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:19:17, skipping insertion in model container [2024-10-31 22:19:17,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:15" (2/3) ... [2024-10-31 22:19:17,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f01bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:19:17, skipping insertion in model container [2024-10-31 22:19:17,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:19:17" (3/3) ... [2024-10-31 22:19:17,250 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product22.cil.c [2024-10-31 22:19:17,273 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:19:17,273 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:19:17,398 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:19:17,418 INFO L333 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, 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;@38b69938, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:19:17,418 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:19:17,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 258 states have (on average 1.5155038759689923) internal successors, (391), 262 states have internal predecessors, (391), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-10-31 22:19:17,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-10-31 22:19:17,456 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:17,457 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:17,457 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:17,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:17,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1302564075, now seen corresponding path program 1 times [2024-10-31 22:19:17,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:17,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980345089] [2024-10-31 22:19:17,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:17,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:18,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:19:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:18,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:19:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:18,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:19:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:18,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 22:19:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:18,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 22:19:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:18,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:19:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:18,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 22:19:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:18,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-31 22:19:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:18,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-31 22:19:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:18,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-31 22:19:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:18,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-31 22:19:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:18,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-31 22:19:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:18,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-31 22:19:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:18,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-31 22:19:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:18,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-31 22:19:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:18,521 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-31 22:19:18,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:18,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980345089] [2024-10-31 22:19:18,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980345089] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:19:18,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46117630] [2024-10-31 22:19:18,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:18,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:18,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:18,527 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:19:18,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:19:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:18,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-31 22:19:18,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:19:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-31 22:19:18,957 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:19:18,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46117630] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:18,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:19:18,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2024-10-31 22:19:18,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86320526] [2024-10-31 22:19:18,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:18,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:19:18,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:18,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:19:18,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:19:19,006 INFO L87 Difference]: Start difference. First operand has 334 states, 258 states have (on average 1.5155038759689923) internal successors, (391), 262 states have internal predecessors, (391), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-10-31 22:19:19,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:19,110 INFO L93 Difference]: Finished difference Result 509 states and 744 transitions. [2024-10-31 22:19:19,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:19:19,113 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 114 [2024-10-31 22:19:19,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:19,127 INFO L225 Difference]: With dead ends: 509 [2024-10-31 22:19:19,128 INFO L226 Difference]: Without dead ends: 327 [2024-10-31 22:19:19,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:19:19,138 INFO L432 NwaCegarLoop]: 495 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, 495 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 [2024-10-31 22:19:19,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:19:19,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-10-31 22:19:19,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2024-10-31 22:19:19,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 252 states have (on average 1.507936507936508) internal successors, (380), 255 states have internal predecessors, (380), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-10-31 22:19:19,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 487 transitions. [2024-10-31 22:19:19,252 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 487 transitions. Word has length 114 [2024-10-31 22:19:19,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:19,254 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 487 transitions. [2024-10-31 22:19:19,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-10-31 22:19:19,256 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 487 transitions. [2024-10-31 22:19:19,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-10-31 22:19:19,267 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:19,268 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:19,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:19:19,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-10-31 22:19:19,469 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:19,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:19,470 INFO L85 PathProgramCache]: Analyzing trace with hash 869367894, now seen corresponding path program 1 times [2024-10-31 22:19:19,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:19,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369063265] [2024-10-31 22:19:19,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:19,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:19,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:19:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:19,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:19:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:19,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:19:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:19,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 22:19:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:19,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 22:19:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:19,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:19:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:19,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-31 22:19:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:19,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-31 22:19:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:19,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-31 22:19:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:19,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-31 22:19:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:19,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-31 22:19:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:19,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-31 22:19:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:19,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-31 22:19:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:19,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-31 22:19:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:19,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-31 22:19:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:19,987 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-31 22:19:19,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:19,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369063265] [2024-10-31 22:19:19,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369063265] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:19:19,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109876866] [2024-10-31 22:19:19,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:19,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:19,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:19,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:19:19,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:19:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:20,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:19:20,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:19:20,411 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-31 22:19:20,411 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:19:20,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109876866] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:20,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:19:20,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-10-31 22:19:20,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163979167] [2024-10-31 22:19:20,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:20,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:19:20,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:20,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:19:20,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:19:20,416 INFO L87 Difference]: Start difference. First operand 327 states and 487 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-10-31 22:19:20,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:20,461 INFO L93 Difference]: Finished difference Result 499 states and 725 transitions. [2024-10-31 22:19:20,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:19:20,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 115 [2024-10-31 22:19:20,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:20,466 INFO L225 Difference]: With dead ends: 499 [2024-10-31 22:19:20,466 INFO L226 Difference]: Without dead ends: 330 [2024-10-31 22:19:20,467 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:19:20,469 INFO L432 NwaCegarLoop]: 485 mSDtfsCounter, 1 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 968 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 [2024-10-31 22:19:20,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 968 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:19:20,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-10-31 22:19:20,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 329. [2024-10-31 22:19:20,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 254 states have (on average 1.5039370078740157) internal successors, (382), 257 states have internal predecessors, (382), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-10-31 22:19:20,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 489 transitions. [2024-10-31 22:19:20,514 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 489 transitions. Word has length 115 [2024-10-31 22:19:20,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:20,515 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 489 transitions. [2024-10-31 22:19:20,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-10-31 22:19:20,516 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 489 transitions. [2024-10-31 22:19:20,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-31 22:19:20,519 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:20,519 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:20,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:19:20,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:20,720 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:20,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:20,721 INFO L85 PathProgramCache]: Analyzing trace with hash 946945952, now seen corresponding path program 1 times [2024-10-31 22:19:20,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:20,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791040854] [2024-10-31 22:19:20,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:20,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:20,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:19:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:21,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:19:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:21,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:19:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:21,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 22:19:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:21,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 22:19:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:21,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:19:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:21,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-31 22:19:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:21,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-31 22:19:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:21,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-31 22:19:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:21,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-31 22:19:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:21,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-31 22:19:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:21,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-31 22:19:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:21,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-31 22:19:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:21,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-31 22:19:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:21,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-31 22:19:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-31 22:19:21,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:21,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791040854] [2024-10-31 22:19:21,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791040854] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:19:21,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394423422] [2024-10-31 22:19:21,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:21,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:21,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:21,118 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:19:21,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:19:21,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:21,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:19:21,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:19:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-31 22:19:21,524 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:19:21,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394423422] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:21,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:19:21,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-10-31 22:19:21,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930757070] [2024-10-31 22:19:21,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:21,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:19:21,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:21,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:19:21,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:19:21,527 INFO L87 Difference]: Start difference. First operand 329 states and 489 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-10-31 22:19:21,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:21,576 INFO L93 Difference]: Finished difference Result 693 states and 1045 transitions. [2024-10-31 22:19:21,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:19:21,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 124 [2024-10-31 22:19:21,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:21,581 INFO L225 Difference]: With dead ends: 693 [2024-10-31 22:19:21,581 INFO L226 Difference]: Without dead ends: 391 [2024-10-31 22:19:21,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:19:21,584 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 115 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 940 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 [2024-10-31 22:19:21,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 940 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:19:21,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-10-31 22:19:21,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 383. [2024-10-31 22:19:21,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 297 states have (on average 1.5218855218855218) internal successors, (452), 300 states have internal predecessors, (452), 65 states have call successors, (65), 20 states have call predecessors, (65), 20 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-10-31 22:19:21,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 581 transitions. [2024-10-31 22:19:21,618 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 581 transitions. Word has length 124 [2024-10-31 22:19:21,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:21,619 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 581 transitions. [2024-10-31 22:19:21,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-10-31 22:19:21,619 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 581 transitions. [2024-10-31 22:19:21,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-10-31 22:19:21,622 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:21,623 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:21,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:19:21,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-31 22:19:21,828 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:21,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:21,828 INFO L85 PathProgramCache]: Analyzing trace with hash 469834409, now seen corresponding path program 1 times [2024-10-31 22:19:21,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:21,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191122401] [2024-10-31 22:19:21,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:21,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:22,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:19:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:22,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:19:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:22,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:19:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:22,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 22:19:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:22,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 22:19:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:22,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:19:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:22,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-31 22:19:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:22,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-31 22:19:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:22,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-31 22:19:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:22,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-31 22:19:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:22,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-31 22:19:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:22,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-31 22:19:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:22,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-31 22:19:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:22,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-31 22:19:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:22,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-31 22:19:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:22,184 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-31 22:19:22,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:22,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191122401] [2024-10-31 22:19:22,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191122401] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:19:22,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878302543] [2024-10-31 22:19:22,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:22,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:22,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:22,188 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:19:22,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:19:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:22,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:19:22,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:19:22,691 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-31 22:19:22,691 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:19:22,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878302543] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:22,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:19:22,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-10-31 22:19:22,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256162766] [2024-10-31 22:19:22,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:22,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:19:22,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:22,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:19:22,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:19:22,694 INFO L87 Difference]: Start difference. First operand 383 states and 581 transitions. Second operand has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-10-31 22:19:22,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:22,770 INFO L93 Difference]: Finished difference Result 757 states and 1152 transitions. [2024-10-31 22:19:22,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:19:22,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2024-10-31 22:19:22,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:22,774 INFO L225 Difference]: With dead ends: 757 [2024-10-31 22:19:22,775 INFO L226 Difference]: Without dead ends: 385 [2024-10-31 22:19:22,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:19:22,777 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 2 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:22,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1905 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:19:22,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-10-31 22:19:22,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2024-10-31 22:19:22,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 298 states have (on average 1.5201342281879195) internal successors, (453), 302 states have internal predecessors, (453), 65 states have call successors, (65), 20 states have call predecessors, (65), 21 states have return successors, (66), 64 states have call predecessors, (66), 64 states have call successors, (66) [2024-10-31 22:19:22,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 584 transitions. [2024-10-31 22:19:22,799 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 584 transitions. Word has length 125 [2024-10-31 22:19:22,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:22,800 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 584 transitions. [2024-10-31 22:19:22,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-10-31 22:19:22,800 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 584 transitions. [2024-10-31 22:19:22,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-10-31 22:19:22,803 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:22,803 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:22,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-31 22:19:23,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:23,004 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:23,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:23,004 INFO L85 PathProgramCache]: Analyzing trace with hash -183363360, now seen corresponding path program 1 times [2024-10-31 22:19:23,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:23,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583461606] [2024-10-31 22:19:23,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:23,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:23,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:19:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:23,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:19:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:23,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:19:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:23,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:19:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:23,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-31 22:19:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:23,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 22:19:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:23,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-31 22:19:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:23,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-31 22:19:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:23,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-31 22:19:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:23,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-31 22:19:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:23,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-31 22:19:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:23,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-31 22:19:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:23,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-31 22:19:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:23,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-31 22:19:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:23,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-31 22:19:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:23,390 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:19:23,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:23,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583461606] [2024-10-31 22:19:23,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583461606] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:19:23,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540911492] [2024-10-31 22:19:23,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:23,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:23,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:23,393 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:19:23,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:19:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:23,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:19:23,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:19:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-31 22:19:23,813 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:19:23,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540911492] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:23,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:19:23,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2024-10-31 22:19:23,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339018374] [2024-10-31 22:19:23,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:23,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:19:23,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:23,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:19:23,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:19:23,818 INFO L87 Difference]: Start difference. First operand 385 states and 584 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-10-31 22:19:23,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:23,910 INFO L93 Difference]: Finished difference Result 759 states and 1157 transitions. [2024-10-31 22:19:23,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:19:23,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 126 [2024-10-31 22:19:23,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:23,913 INFO L225 Difference]: With dead ends: 759 [2024-10-31 22:19:23,914 INFO L226 Difference]: Without dead ends: 387 [2024-10-31 22:19:23,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:19:23,919 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 2 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:23,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1891 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:19:23,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-10-31 22:19:23,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2024-10-31 22:19:23,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 299 states have (on average 1.5183946488294315) internal successors, (454), 304 states have internal predecessors, (454), 65 states have call successors, (65), 20 states have call predecessors, (65), 22 states have return successors, (71), 64 states have call predecessors, (71), 64 states have call successors, (71) [2024-10-31 22:19:23,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 590 transitions. [2024-10-31 22:19:23,952 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 590 transitions. Word has length 126 [2024-10-31 22:19:23,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:23,952 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 590 transitions. [2024-10-31 22:19:23,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-10-31 22:19:23,953 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 590 transitions. [2024-10-31 22:19:23,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-10-31 22:19:23,956 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:23,957 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:23,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-31 22:19:24,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:24,161 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:24,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:24,162 INFO L85 PathProgramCache]: Analyzing trace with hash 862212022, now seen corresponding path program 1 times [2024-10-31 22:19:24,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:24,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296283216] [2024-10-31 22:19:24,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:24,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:24,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:19:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:24,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:19:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:24,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:19:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:24,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:19:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:24,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 22:19:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:24,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-31 22:19:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:24,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-31 22:19:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:24,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-31 22:19:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:24,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-31 22:19:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:24,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-31 22:19:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:24,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-31 22:19:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:24,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-31 22:19:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:24,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-31 22:19:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:24,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-31 22:19:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:24,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-10-31 22:19:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:24,459 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-31 22:19:24,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:24,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296283216] [2024-10-31 22:19:24,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296283216] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:24,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:24,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:19:24,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619999508] [2024-10-31 22:19:24,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:24,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:19:24,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:24,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:19:24,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:19:24,462 INFO L87 Difference]: Start difference. First operand 387 states and 590 transitions. Second operand has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-10-31 22:19:27,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:27,444 INFO L93 Difference]: Finished difference Result 926 states and 1420 transitions. [2024-10-31 22:19:27,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:19:27,445 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 127 [2024-10-31 22:19:27,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:27,450 INFO L225 Difference]: With dead ends: 926 [2024-10-31 22:19:27,450 INFO L226 Difference]: Without dead ends: 562 [2024-10-31 22:19:27,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-10-31 22:19:27,452 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 1028 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 2578 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 2927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 2578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:27,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 1172 Invalid, 2927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 2578 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-31 22:19:27,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-10-31 22:19:27,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 387. [2024-10-31 22:19:27,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 299 states have (on average 1.5183946488294315) internal successors, (454), 304 states have internal predecessors, (454), 65 states have call successors, (65), 20 states have call predecessors, (65), 22 states have return successors, (70), 64 states have call predecessors, (70), 64 states have call successors, (70) [2024-10-31 22:19:27,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 589 transitions. [2024-10-31 22:19:27,501 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 589 transitions. Word has length 127 [2024-10-31 22:19:27,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:27,501 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 589 transitions. [2024-10-31 22:19:27,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-10-31 22:19:27,502 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 589 transitions. [2024-10-31 22:19:27,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-10-31 22:19:27,504 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:27,504 INFO L215 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] [2024-10-31 22:19:27,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:19:27,505 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:27,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:27,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1620412107, now seen corresponding path program 2 times [2024-10-31 22:19:27,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:27,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482057972] [2024-10-31 22:19:27,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:27,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:27,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:19:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:27,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:19:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:27,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:19:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:27,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:19:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:27,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 22:19:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:27,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 22:19:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:27,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-31 22:19:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:27,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-31 22:19:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:27,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-31 22:19:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:27,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-31 22:19:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:27,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-31 22:19:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:27,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-31 22:19:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:27,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-31 22:19:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:27,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-31 22:19:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:27,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-31 22:19:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-31 22:19:27,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:27,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482057972] [2024-10-31 22:19:27,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482057972] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:27,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:27,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:19:27,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563630022] [2024-10-31 22:19:27,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:27,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:19:27,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:27,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:19:27,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:19:27,833 INFO L87 Difference]: Start difference. First operand 387 states and 589 transitions. Second operand has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-10-31 22:19:30,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:30,777 INFO L93 Difference]: Finished difference Result 928 states and 1423 transitions. [2024-10-31 22:19:30,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:19:30,778 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 128 [2024-10-31 22:19:30,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:30,782 INFO L225 Difference]: With dead ends: 928 [2024-10-31 22:19:30,783 INFO L226 Difference]: Without dead ends: 564 [2024-10-31 22:19:30,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-10-31 22:19:30,785 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 1024 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 2589 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 2589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:30,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 1172 Invalid, 2939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 2589 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-31 22:19:30,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-10-31 22:19:30,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 389. [2024-10-31 22:19:30,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 300 states have (on average 1.5166666666666666) internal successors, (455), 306 states have internal predecessors, (455), 65 states have call successors, (65), 20 states have call predecessors, (65), 23 states have return successors, (72), 64 states have call predecessors, (72), 64 states have call successors, (72) [2024-10-31 22:19:30,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 592 transitions. [2024-10-31 22:19:30,830 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 592 transitions. Word has length 128 [2024-10-31 22:19:30,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:30,831 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 592 transitions. [2024-10-31 22:19:30,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-10-31 22:19:30,832 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 592 transitions. [2024-10-31 22:19:30,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-10-31 22:19:30,834 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:30,834 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:30,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:19:30,835 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:30,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:30,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1441005787, now seen corresponding path program 1 times [2024-10-31 22:19:30,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:30,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419237666] [2024-10-31 22:19:30,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:30,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:31,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:19:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:31,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:19:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:31,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:19:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:31,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:19:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:31,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 22:19:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:31,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-31 22:19:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:31,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-31 22:19:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:31,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-31 22:19:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:31,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-31 22:19:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:31,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-31 22:19:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:31,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-31 22:19:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:31,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-31 22:19:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:31,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-31 22:19:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:31,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-31 22:19:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:31,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-31 22:19:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:31,183 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:19:31,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:31,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419237666] [2024-10-31 22:19:31,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419237666] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:31,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:31,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-31 22:19:31,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761279211] [2024-10-31 22:19:31,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:31,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:19:31,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:31,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:19:31,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:19:31,187 INFO L87 Difference]: Start difference. First operand 389 states and 592 transitions. Second operand has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-10-31 22:19:34,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:34,799 INFO L93 Difference]: Finished difference Result 926 states and 1418 transitions. [2024-10-31 22:19:34,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 22:19:34,800 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 129 [2024-10-31 22:19:34,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:34,804 INFO L225 Difference]: With dead ends: 926 [2024-10-31 22:19:34,804 INFO L226 Difference]: Without dead ends: 564 [2024-10-31 22:19:34,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2024-10-31 22:19:34,807 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 1028 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 4276 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 4631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 4276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:34,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 1623 Invalid, 4631 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [355 Valid, 4276 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-10-31 22:19:34,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-10-31 22:19:34,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 389. [2024-10-31 22:19:34,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 300 states have (on average 1.5166666666666666) internal successors, (455), 306 states have internal predecessors, (455), 65 states have call successors, (65), 20 states have call predecessors, (65), 23 states have return successors, (71), 64 states have call predecessors, (71), 64 states have call successors, (71) [2024-10-31 22:19:34,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 591 transitions. [2024-10-31 22:19:34,855 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 591 transitions. Word has length 129 [2024-10-31 22:19:34,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:34,856 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 591 transitions. [2024-10-31 22:19:34,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-10-31 22:19:34,856 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 591 transitions. [2024-10-31 22:19:34,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-10-31 22:19:34,859 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:34,859 INFO L215 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] [2024-10-31 22:19:34,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:19:34,859 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:34,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:34,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1589119151, now seen corresponding path program 2 times [2024-10-31 22:19:34,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:34,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224334957] [2024-10-31 22:19:34,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:34,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:35,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:19:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:35,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:19:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:35,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:19:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:35,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:19:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:35,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 22:19:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:35,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-31 22:19:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:35,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-31 22:19:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:35,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-31 22:19:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:35,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-31 22:19:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:35,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-31 22:19:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:35,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-31 22:19:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:35,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-31 22:19:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:35,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-31 22:19:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:35,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-31 22:19:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:35,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-31 22:19:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:35,222 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:19:35,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:35,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224334957] [2024-10-31 22:19:35,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224334957] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:35,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:35,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-31 22:19:35,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108189333] [2024-10-31 22:19:35,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:35,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:19:35,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:35,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:19:35,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:19:35,226 INFO L87 Difference]: Start difference. First operand 389 states and 591 transitions. Second operand has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-10-31 22:19:38,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:38,631 INFO L93 Difference]: Finished difference Result 928 states and 1424 transitions. [2024-10-31 22:19:38,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 22:19:38,638 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 130 [2024-10-31 22:19:38,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:38,647 INFO L225 Difference]: With dead ends: 928 [2024-10-31 22:19:38,650 INFO L226 Difference]: Without dead ends: 566 [2024-10-31 22:19:38,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2024-10-31 22:19:38,656 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 1024 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 4320 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 4672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 4320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:38,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 1624 Invalid, 4672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 4320 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-31 22:19:38,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-10-31 22:19:38,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 391. [2024-10-31 22:19:38,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 301 states have (on average 1.5149501661129567) internal successors, (456), 308 states have internal predecessors, (456), 65 states have call successors, (65), 20 states have call predecessors, (65), 24 states have return successors, (76), 64 states have call predecessors, (76), 64 states have call successors, (76) [2024-10-31 22:19:38,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 597 transitions. [2024-10-31 22:19:38,764 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 597 transitions. Word has length 130 [2024-10-31 22:19:38,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:38,765 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 597 transitions. [2024-10-31 22:19:38,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-10-31 22:19:38,766 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 597 transitions. [2024-10-31 22:19:38,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-31 22:19:38,772 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:38,772 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:38,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:19:38,773 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:38,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:38,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1727508064, now seen corresponding path program 1 times [2024-10-31 22:19:38,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:38,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460097530] [2024-10-31 22:19:38,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:38,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:39,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:19:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:39,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:19:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:39,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:19:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:39,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:19:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:39,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 22:19:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:39,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-31 22:19:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:39,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-31 22:19:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:39,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-31 22:19:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:39,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-31 22:19:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:39,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-31 22:19:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:39,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-31 22:19:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:39,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-31 22:19:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:39,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-31 22:19:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:39,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-31 22:19:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:39,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-31 22:19:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:39,116 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-31 22:19:39,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:39,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460097530] [2024-10-31 22:19:39,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460097530] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:19:39,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126255090] [2024-10-31 22:19:39,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:39,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:39,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:39,119 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:19:39,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7ae7f2-bb28-4ec5-b145-93bb52cf73bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:19:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:39,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:19:39,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:19:39,528 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-31 22:19:39,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:19:39,669 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-31 22:19:39,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126255090] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:19:39,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:19:39,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2024-10-31 22:19:39,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736273673] [2024-10-31 22:19:39,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:19:39,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 22:19:39,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:39,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 22:19:39,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:19:39,674 INFO L87 Difference]: Start difference. First operand 391 states and 597 transitions. Second operand has 15 states, 14 states have (on average 10.214285714285714) internal successors, (143), 11 states have internal predecessors, (143), 4 states have call successors, (35), 6 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28)