./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme --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 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:46:46,294 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:46:46,421 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:46:46,434 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:46:46,435 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:46:46,475 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:46:46,477 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:46:46,478 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:46:46,479 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:46:46,485 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:46:46,485 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:46:46,487 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:46:46,488 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:46:46,490 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:46:46,490 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:46:46,491 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:46:46,491 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:46:46,491 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:46:46,492 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:46:46,492 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:46:46,493 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:46:46,493 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:46:46,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:46:46,494 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:46:46,495 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:46:46,495 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:46:46,496 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:46:46,497 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:46:46,497 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:46:46,498 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:46:46,499 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:46:46,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:46:46,500 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:46:46,500 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:46:46,500 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:46:46,501 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:46:46,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:46:46,501 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:46:46,501 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:46:46,502 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:46:46,502 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:46:46,502 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:46:46,503 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_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 [2023-11-26 11:46:46,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:46:46,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:46:46,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:46:46,803 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:46:46,804 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:46:46,805 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2023-11-26 11:46:49,996 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:46:50,462 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:46:50,463 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2023-11-26 11:46:50,492 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/data/4a6b8abfa/3b3e769297c9403e91d52de7f7084c11/FLAGb64cc1f2b [2023-11-26 11:46:50,508 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/data/4a6b8abfa/3b3e769297c9403e91d52de7f7084c11 [2023-11-26 11:46:50,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:46:50,512 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:46:50,518 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:46:50,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:46:50,524 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:46:50,525 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:46:50" (1/1) ... [2023-11-26 11:46:50,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e3bd6d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:50, skipping insertion in model container [2023-11-26 11:46:50,527 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:46:50" (1/1) ... [2023-11-26 11:46:50,630 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:46:51,461 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2023-11-26 11:46:51,540 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:46:51,558 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:46:51,569 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2023-11-26 11:46:51,570 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [168] [2023-11-26 11:46:51,571 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [754] [2023-11-26 11:46:51,571 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1126] [2023-11-26 11:46:51,572 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1492] [2023-11-26 11:46:51,572 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1698] [2023-11-26 11:46:51,572 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2095] [2023-11-26 11:46:51,573 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2112] [2023-11-26 11:46:51,573 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2378] [2023-11-26 11:46:51,573 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [2387] [2023-11-26 11:46:51,573 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptAutoResponder_spec.i","") [3447] [2023-11-26 11:46:51,650 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2023-11-26 11:46:51,674 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:46:51,759 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:46:51,766 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:46:51,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:51 WrapperNode [2023-11-26 11:46:51,767 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:46:51,769 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:46:51,781 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:46:51,782 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:46:51,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:51" (1/1) ... [2023-11-26 11:46:51,829 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:51" (1/1) ... [2023-11-26 11:46:51,925 INFO L138 Inliner]: procedures = 151, calls = 282, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1334 [2023-11-26 11:46:51,926 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:46:51,926 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:46:51,927 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:46:51,927 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:46:51,937 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:51" (1/1) ... [2023-11-26 11:46:51,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:51" (1/1) ... [2023-11-26 11:46:51,952 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:51" (1/1) ... [2023-11-26 11:46:52,000 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2023-11-26 11:46:52,000 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:51" (1/1) ... [2023-11-26 11:46:52,000 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:51" (1/1) ... [2023-11-26 11:46:52,060 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:51" (1/1) ... [2023-11-26 11:46:52,074 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:51" (1/1) ... [2023-11-26 11:46:52,083 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:51" (1/1) ... [2023-11-26 11:46:52,091 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:51" (1/1) ... [2023-11-26 11:46:52,105 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:46:52,106 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:46:52,107 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:46:52,107 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:46:52,108 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:51" (1/1) ... [2023-11-26 11:46:52,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:46:52,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:52,158 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:46:52,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:46:52,205 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-11-26 11:46:52,205 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-11-26 11:46:52,205 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2023-11-26 11:46:52,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2023-11-26 11:46:52,206 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2023-11-26 11:46:52,206 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2023-11-26 11:46:52,207 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-11-26 11:46:52,207 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-11-26 11:46:52,208 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-26 11:46:52,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-26 11:46:52,208 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-11-26 11:46:52,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-11-26 11:46:52,209 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-26 11:46:52,210 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-26 11:46:52,211 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2023-11-26 11:46:52,211 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2023-11-26 11:46:52,211 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-26 11:46:52,214 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-26 11:46:52,214 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2023-11-26 11:46:52,215 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2023-11-26 11:46:52,215 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-26 11:46:52,215 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-26 11:46:52,215 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-26 11:46:52,216 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-26 11:46:52,216 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-26 11:46:52,217 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-26 11:46:52,217 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2023-11-26 11:46:52,217 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2023-11-26 11:46:52,217 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2023-11-26 11:46:52,217 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2023-11-26 11:46:52,217 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-26 11:46:52,218 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-26 11:46:52,218 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-26 11:46:52,218 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-26 11:46:52,218 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-26 11:46:52,218 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-26 11:46:52,218 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-26 11:46:52,218 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2023-11-26 11:46:52,219 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2023-11-26 11:46:52,219 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-26 11:46:52,219 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-26 11:46:52,219 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-11-26 11:46:52,219 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-11-26 11:46:52,219 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-26 11:46:52,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-26 11:46:52,220 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2023-11-26 11:46:52,220 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2023-11-26 11:46:52,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:46:52,221 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-26 11:46:52,221 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-26 11:46:52,222 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-26 11:46:52,223 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-26 11:46:52,223 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2023-11-26 11:46:52,223 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2023-11-26 11:46:52,224 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2023-11-26 11:46:52,224 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2023-11-26 11:46:52,224 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2023-11-26 11:46:52,224 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2023-11-26 11:46:52,224 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-11-26 11:46:52,224 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-11-26 11:46:52,224 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-26 11:46:52,225 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-26 11:46:52,225 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-26 11:46:52,225 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-26 11:46:52,225 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-26 11:46:52,226 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-26 11:46:52,226 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-26 11:46:52,226 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-26 11:46:52,226 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-26 11:46:52,226 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-26 11:46:52,226 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-26 11:46:52,227 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-26 11:46:52,227 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2023-11-26 11:46:52,227 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2023-11-26 11:46:52,228 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2023-11-26 11:46:52,228 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2023-11-26 11:46:52,228 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-26 11:46:52,228 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-26 11:46:52,229 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-26 11:46:52,229 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-26 11:46:52,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:46:52,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:46:52,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:46:52,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:46:52,229 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-26 11:46:52,230 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-26 11:46:52,230 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2023-11-26 11:46:52,230 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2023-11-26 11:46:52,230 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-11-26 11:46:52,230 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-11-26 11:46:52,230 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-11-26 11:46:52,231 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-11-26 11:46:52,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:46:52,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:46:52,552 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:46:52,556 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:46:53,761 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:46:53,833 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:46:53,834 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:46:53,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:46:53 BoogieIcfgContainer [2023-11-26 11:46:53,835 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:46:53,837 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:46:53,837 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:46:53,840 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:46:53,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:46:50" (1/3) ... [2023-11-26 11:46:53,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10571158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:46:53, skipping insertion in model container [2023-11-26 11:46:53,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:51" (2/3) ... [2023-11-26 11:46:53,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10571158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:46:53, skipping insertion in model container [2023-11-26 11:46:53,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:46:53" (3/3) ... [2023-11-26 11:46:53,843 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_productSimulator.cil.c [2023-11-26 11:46:53,864 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:46:53,864 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:46:53,942 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:46:53,949 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@f2424d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:46:53,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:46:53,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 571 states, 417 states have (on average 1.5515587529976018) internal successors, (647), 437 states have internal predecessors, (647), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2023-11-26 11:46:53,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-26 11:46:53,993 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:53,994 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:53,994 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:54,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:54,000 INFO L85 PathProgramCache]: Analyzing trace with hash -483827818, now seen corresponding path program 1 times [2023-11-26 11:46:54,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:54,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206930149] [2023-11-26 11:46:54,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:54,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:46:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:46:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:46:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:46:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-26 11:46:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:46:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:46:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:46:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-26 11:46:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:46:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-26 11:46:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:46:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 11:46:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:46:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-26 11:46:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-26 11:46:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-26 11:46:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-26 11:46:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-26 11:46:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-26 11:46:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:46:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-26 11:46:54,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:54,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206930149] [2023-11-26 11:46:54,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206930149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:54,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:54,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:46:54,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976329948] [2023-11-26 11:46:54,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:54,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:46:54,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:55,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:46:55,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:46:55,035 INFO L87 Difference]: Start difference. First operand has 571 states, 417 states have (on average 1.5515587529976018) internal successors, (647), 437 states have internal predecessors, (647), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 11:46:58,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:58,254 INFO L93 Difference]: Finished difference Result 1233 states and 1925 transitions. [2023-11-26 11:46:58,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:46:58,257 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 139 [2023-11-26 11:46:58,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:58,279 INFO L225 Difference]: With dead ends: 1233 [2023-11-26 11:46:58,279 INFO L226 Difference]: Without dead ends: 690 [2023-11-26 11:46:58,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:46:58,291 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 1317 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 2513 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 1410 SdHoareTripleChecker+Invalid, 3111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 2513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:58,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1323 Valid, 1410 Invalid, 3111 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [598 Valid, 2513 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-26 11:46:58,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2023-11-26 11:46:58,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 568. [2023-11-26 11:46:58,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 415 states have (on average 1.5253012048192771) internal successors, (633), 434 states have internal predecessors, (633), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2023-11-26 11:46:58,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 850 transitions. [2023-11-26 11:46:58,485 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 850 transitions. Word has length 139 [2023-11-26 11:46:58,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:58,486 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 850 transitions. [2023-11-26 11:46:58,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 11:46:58,486 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 850 transitions. [2023-11-26 11:46:58,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-26 11:46:58,502 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:58,503 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:58,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:46:58,504 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:58,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:58,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1339543914, now seen corresponding path program 1 times [2023-11-26 11:46:58,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:58,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134436795] [2023-11-26 11:46:58,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:58,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:58,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:46:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:58,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:46:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:58,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:46:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:58,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:46:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:58,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-26 11:46:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:58,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:46:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:58,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:46:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:58,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:46:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:58,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 11:46:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:58,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:46:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:58,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-26 11:46:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:58,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:46:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:58,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-26 11:46:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:58,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:46:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:59,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-26 11:46:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:59,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-26 11:46:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:59,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-26 11:46:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:59,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-26 11:46:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:59,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-26 11:46:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:59,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-26 11:46:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:59,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:46:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:59,047 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-26 11:46:59,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:59,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134436795] [2023-11-26 11:46:59,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134436795] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:46:59,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145477459] [2023-11-26 11:46:59,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:59,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:59,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:59,054 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:59,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:46:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:59,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 1424 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:46:59,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:59,571 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-26 11:46:59,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:59,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145477459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:59,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:46:59,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-11-26 11:46:59,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326750081] [2023-11-26 11:46:59,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:59,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:46:59,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:59,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:46:59,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:46:59,588 INFO L87 Difference]: Start difference. First operand 568 states and 850 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 11:46:59,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:59,742 INFO L93 Difference]: Finished difference Result 880 states and 1292 transitions. [2023-11-26 11:46:59,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:46:59,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 145 [2023-11-26 11:46:59,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:59,749 INFO L225 Difference]: With dead ends: 880 [2023-11-26 11:46:59,749 INFO L226 Difference]: Without dead ends: 570 [2023-11-26 11:46:59,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:46:59,752 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 0 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:59,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1657 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:46:59,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2023-11-26 11:46:59,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2023-11-26 11:46:59,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 417 states have (on average 1.5227817745803358) internal successors, (635), 436 states have internal predecessors, (635), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2023-11-26 11:46:59,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 852 transitions. [2023-11-26 11:46:59,824 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 852 transitions. Word has length 145 [2023-11-26 11:46:59,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:59,826 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 852 transitions. [2023-11-26 11:46:59,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 11:46:59,826 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 852 transitions. [2023-11-26 11:46:59,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-26 11:46:59,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:59,831 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:59,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 11:47:00,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-26 11:47:00,040 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:00,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:00,041 INFO L85 PathProgramCache]: Analyzing trace with hash -915338777, now seen corresponding path program 1 times [2023-11-26 11:47:00,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:00,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95361076] [2023-11-26 11:47:00,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:00,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:47:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:47:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:47:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-26 11:47:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:47:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:47:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:47:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 11:47:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-26 11:47:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-26 11:47:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-26 11:47:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-26 11:47:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-26 11:47:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-26 11:47:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-26 11:47:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-26 11:47:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:47:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,484 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-26 11:47:00,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:00,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95361076] [2023-11-26 11:47:00,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95361076] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:47:00,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379890628] [2023-11-26 11:47:00,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:00,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:00,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:00,487 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:47:00,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:47:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:47:00,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:01,036 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-26 11:47:01,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:47:01,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379890628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:01,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:47:01,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-26 11:47:01,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482363445] [2023-11-26 11:47:01,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:01,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:47:01,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:01,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:47:01,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:47:01,040 INFO L87 Difference]: Start difference. First operand 570 states and 852 transitions. Second operand has 7 states, 6 states have (on average 15.0) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-26 11:47:01,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:01,300 INFO L93 Difference]: Finished difference Result 1091 states and 1637 transitions. [2023-11-26 11:47:01,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:47:01,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.0) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 151 [2023-11-26 11:47:01,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:01,306 INFO L225 Difference]: With dead ends: 1091 [2023-11-26 11:47:01,306 INFO L226 Difference]: Without dead ends: 574 [2023-11-26 11:47:01,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:47:01,310 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 12 mSDsluCounter, 4064 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 4881 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:01,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 4881 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:47:01,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2023-11-26 11:47:01,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 574. [2023-11-26 11:47:01,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 419 states have (on average 1.5202863961813842) internal successors, (637), 439 states have internal predecessors, (637), 109 states have call successors, (109), 43 states have call predecessors, (109), 45 states have return successors, (112), 108 states have call predecessors, (112), 108 states have call successors, (112) [2023-11-26 11:47:01,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 858 transitions. [2023-11-26 11:47:01,378 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 858 transitions. Word has length 151 [2023-11-26 11:47:01,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:01,378 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 858 transitions. [2023-11-26 11:47:01,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.0) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-26 11:47:01,379 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 858 transitions. [2023-11-26 11:47:01,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-26 11:47:01,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:01,384 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:01,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:01,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:01,591 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:01,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:01,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1929952825, now seen corresponding path program 1 times [2023-11-26 11:47:01,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:01,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048175824] [2023-11-26 11:47:01,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:01,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:01,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:01,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:47:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:01,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:47:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:01,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:47:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:01,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-26 11:47:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:01,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:47:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:01,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:47:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:01,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:47:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:01,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 11:47:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:01,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:01,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-26 11:47:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:01,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:01,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 11:47:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:01,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:01,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-26 11:47:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:01,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 11:47:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:01,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-26 11:47:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:01,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-26 11:47:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:01,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-26 11:47:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:01,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-26 11:47:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:01,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:47:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:01,977 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-26 11:47:01,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:01,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048175824] [2023-11-26 11:47:01,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048175824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:01,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:01,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 11:47:01,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785330153] [2023-11-26 11:47:01,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:01,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:47:01,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:01,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:47:01,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:47:01,981 INFO L87 Difference]: Start difference. First operand 574 states and 858 transitions. Second operand has 10 states, 9 states have (on average 9.88888888888889) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-26 11:47:06,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:06,145 INFO L93 Difference]: Finished difference Result 1199 states and 1834 transitions. [2023-11-26 11:47:06,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:47:06,146 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.88888888888889) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 152 [2023-11-26 11:47:06,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:06,152 INFO L225 Difference]: With dead ends: 1199 [2023-11-26 11:47:06,152 INFO L226 Difference]: Without dead ends: 698 [2023-11-26 11:47:06,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2023-11-26 11:47:06,155 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1341 mSDsluCounter, 1789 mSDsCounter, 0 mSdLazyCounter, 4743 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 5332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 4743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:06,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1351 Valid, 2067 Invalid, 5332 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [589 Valid, 4743 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-26 11:47:06,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2023-11-26 11:47:06,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 576. [2023-11-26 11:47:06,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 420 states have (on average 1.519047619047619) internal successors, (638), 440 states have internal predecessors, (638), 109 states have call successors, (109), 43 states have call predecessors, (109), 46 states have return successors, (113), 109 states have call predecessors, (113), 108 states have call successors, (113) [2023-11-26 11:47:06,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 860 transitions. [2023-11-26 11:47:06,218 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 860 transitions. Word has length 152 [2023-11-26 11:47:06,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:06,220 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 860 transitions. [2023-11-26 11:47:06,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.88888888888889) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-26 11:47:06,221 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 860 transitions. [2023-11-26 11:47:06,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-26 11:47:06,225 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:06,225 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:06,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:47:06,225 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:06,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:06,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1161237262, now seen corresponding path program 1 times [2023-11-26 11:47:06,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:06,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209067253] [2023-11-26 11:47:06,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:06,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:06,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:06,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:47:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:06,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:47:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:06,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:47:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:06,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-26 11:47:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:06,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:47:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:06,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:47:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:06,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:47:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:06,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 11:47:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:06,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:06,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-26 11:47:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:06,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:06,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 11:47:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:06,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:06,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-26 11:47:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:06,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-26 11:47:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:06,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-26 11:47:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:06,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-26 11:47:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:06,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-26 11:47:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:06,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-26 11:47:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:06,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:47:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:06,674 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-26 11:47:06,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:06,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209067253] [2023-11-26 11:47:06,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209067253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:06,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:06,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 11:47:06,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6541382] [2023-11-26 11:47:06,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:06,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:47:06,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:06,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:47:06,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:47:06,678 INFO L87 Difference]: Start difference. First operand 576 states and 860 transitions. Second operand has 10 states, 9 states have (on average 10.0) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-26 11:47:10,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:10,602 INFO L93 Difference]: Finished difference Result 1203 states and 1840 transitions. [2023-11-26 11:47:10,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:47:10,603 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.0) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 153 [2023-11-26 11:47:10,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:10,609 INFO L225 Difference]: With dead ends: 1203 [2023-11-26 11:47:10,609 INFO L226 Difference]: Without dead ends: 702 [2023-11-26 11:47:10,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2023-11-26 11:47:10,612 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1336 mSDsluCounter, 1789 mSDsCounter, 0 mSdLazyCounter, 4685 mSolverCounterSat, 590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 5275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 4685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:10,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 2067 Invalid, 5275 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [590 Valid, 4685 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-26 11:47:10,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2023-11-26 11:47:10,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 578. [2023-11-26 11:47:10,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 421 states have (on average 1.517814726840855) internal successors, (639), 442 states have internal predecessors, (639), 109 states have call successors, (109), 43 states have call predecessors, (109), 47 states have return successors, (116), 109 states have call predecessors, (116), 108 states have call successors, (116) [2023-11-26 11:47:10,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 864 transitions. [2023-11-26 11:47:10,667 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 864 transitions. Word has length 153 [2023-11-26 11:47:10,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:10,668 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 864 transitions. [2023-11-26 11:47:10,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.0) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-26 11:47:10,669 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 864 transitions. [2023-11-26 11:47:10,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-26 11:47:10,674 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:10,675 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:10,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:47:10,675 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:10,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:10,676 INFO L85 PathProgramCache]: Analyzing trace with hash -114233438, now seen corresponding path program 1 times [2023-11-26 11:47:10,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:10,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536103829] [2023-11-26 11:47:10,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:10,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:10,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:10,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:47:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:10,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:47:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:10,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:47:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:10,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-26 11:47:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:10,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:47:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:10,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:47:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:10,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:47:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:10,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 11:47:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:10,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:10,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-26 11:47:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:10,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:10,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 11:47:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:10,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:10,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-26 11:47:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:10,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-26 11:47:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:10,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-26 11:47:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:10,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-26 11:47:10,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:10,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-26 11:47:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:10,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-26 11:47:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:10,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:47:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:10,992 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-26 11:47:10,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:10,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536103829] [2023-11-26 11:47:10,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536103829] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:47:10,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497416542] [2023-11-26 11:47:10,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:10,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:10,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:10,995 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:47:11,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:47:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:11,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:47:11,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:11,468 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-26 11:47:11,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:47:11,596 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-26 11:47:11,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497416542] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:47:11,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:47:11,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2023-11-26 11:47:11,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774329101] [2023-11-26 11:47:11,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:47:11,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:47:11,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:11,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:47:11,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:47:11,604 INFO L87 Difference]: Start difference. First operand 578 states and 864 transitions. Second operand has 10 states, 10 states have (on average 12.2) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (45), 5 states have call predecessors, (45), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-26 11:47:15,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:15,451 INFO L93 Difference]: Finished difference Result 1370 states and 2153 transitions. [2023-11-26 11:47:15,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:47:15,452 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (45), 5 states have call predecessors, (45), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 154 [2023-11-26 11:47:15,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:15,461 INFO L225 Difference]: With dead ends: 1370 [2023-11-26 11:47:15,461 INFO L226 Difference]: Without dead ends: 1060 [2023-11-26 11:47:15,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:47:15,464 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 1810 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 4104 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 2133 SdHoareTripleChecker+Invalid, 4821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 4104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:15,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 2133 Invalid, 4821 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [717 Valid, 4104 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-26 11:47:15,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2023-11-26 11:47:15,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 923. [2023-11-26 11:47:15,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 715 states have (on average 1.5944055944055944) internal successors, (1140), 742 states have internal predecessors, (1140), 160 states have call successors, (160), 43 states have call predecessors, (160), 47 states have return successors, (167), 160 states have call predecessors, (167), 159 states have call successors, (167) [2023-11-26 11:47:15,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1467 transitions. [2023-11-26 11:47:15,534 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1467 transitions. Word has length 154 [2023-11-26 11:47:15,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:15,534 INFO L495 AbstractCegarLoop]: Abstraction has 923 states and 1467 transitions. [2023-11-26 11:47:15,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (45), 5 states have call predecessors, (45), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-26 11:47:15,535 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1467 transitions. [2023-11-26 11:47:15,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-26 11:47:15,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:15,542 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:15,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:15,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a33977d-c582-4ca6-a490-dad523c6bc60/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:15,749 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:15,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:15,750 INFO L85 PathProgramCache]: Analyzing trace with hash 541442649, now seen corresponding path program 1 times [2023-11-26 11:47:15,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:15,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504345701] [2023-11-26 11:47:15,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:15,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:15,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:15,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:47:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:15,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:47:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:15,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:47:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:15,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-26 11:47:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:15,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:47:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:15,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:47:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:15,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:47:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:15,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 11:47:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:15,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:15,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-26 11:47:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:15,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:15,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 11:47:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:15,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:15,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-26 11:47:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:15,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-26 11:47:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:15,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-26 11:47:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:15,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-26 11:47:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:15,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-26 11:47:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:15,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-26 11:47:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:15,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:47:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:15,950 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-26 11:47:15,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:15,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504345701] [2023-11-26 11:47:15,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504345701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:15,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:15,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:47:15,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201488870] [2023-11-26 11:47:15,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:15,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:47:15,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:15,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:47:15,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:47:15,954 INFO L87 Difference]: Start difference. First operand 923 states and 1467 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 11:47:18,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:18,358 INFO L93 Difference]: Finished difference Result 2127 states and 3449 transitions. [2023-11-26 11:47:18,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:47:18,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 159 [2023-11-26 11:47:18,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:18,369 INFO L225 Difference]: With dead ends: 2127 [2023-11-26 11:47:18,369 INFO L226 Difference]: Without dead ends: 1313 [2023-11-26 11:47:18,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:47:18,375 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 1481 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 2425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:18,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 1108 Invalid, 2425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 1799 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-26 11:47:18,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2023-11-26 11:47:18,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1186. [2023-11-26 11:47:18,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 936 states have (on average 1.607905982905983) internal successors, (1505), 969 states have internal predecessors, (1505), 202 states have call successors, (202), 43 states have call predecessors, (202), 47 states have return successors, (209), 202 states have call predecessors, (209), 201 states have call successors, (209) [2023-11-26 11:47:18,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1916 transitions. [2023-11-26 11:47:18,455 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1916 transitions. Word has length 159 [2023-11-26 11:47:18,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:18,456 INFO L495 AbstractCegarLoop]: Abstraction has 1186 states and 1916 transitions. [2023-11-26 11:47:18,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 11:47:18,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1916 transitions. [2023-11-26 11:47:18,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-26 11:47:18,464 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:18,465 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:18,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:47:18,465 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:18,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:18,466 INFO L85 PathProgramCache]: Analyzing trace with hash 488343797, now seen corresponding path program 1 times [2023-11-26 11:47:18,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:18,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183086318] [2023-11-26 11:47:18,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:18,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:18,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:18,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:47:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:18,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:47:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:18,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:47:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:18,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-26 11:47:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:18,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:47:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:18,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:47:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:18,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:47:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:18,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 11:47:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:18,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:18,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-26 11:47:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:18,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:18,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 11:47:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:18,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:18,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-26 11:47:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:18,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-26 11:47:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:18,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-26 11:47:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:18,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-26 11:47:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:18,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-26 11:47:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:18,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-26 11:47:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:18,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:47:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:18,670 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-26 11:47:18,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:18,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183086318] [2023-11-26 11:47:18,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183086318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:18,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:18,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:47:18,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329270265] [2023-11-26 11:47:18,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:18,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:47:18,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:18,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:47:18,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:47:18,675 INFO L87 Difference]: Start difference. First operand 1186 states and 1916 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 11:47:21,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:21,094 INFO L93 Difference]: Finished difference Result 2859 states and 4709 transitions. [2023-11-26 11:47:21,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:47:21,095 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 160 [2023-11-26 11:47:21,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:21,109 INFO L225 Difference]: With dead ends: 2859 [2023-11-26 11:47:21,109 INFO L226 Difference]: Without dead ends: 1801 [2023-11-26 11:47:21,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:47:21,116 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 1486 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 2417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:21,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1127 Invalid, 2417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 1782 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-26 11:47:21,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2023-11-26 11:47:21,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1674. [2023-11-26 11:47:21,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 1345 states have (on average 1.625278810408922) internal successors, (2186), 1388 states have internal predecessors, (2186), 281 states have call successors, (281), 43 states have call predecessors, (281), 47 states have return successors, (288), 281 states have call predecessors, (288), 280 states have call successors, (288) [2023-11-26 11:47:21,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2755 transitions. [2023-11-26 11:47:21,240 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2755 transitions. Word has length 160 [2023-11-26 11:47:21,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:21,241 INFO L495 AbstractCegarLoop]: Abstraction has 1674 states and 2755 transitions. [2023-11-26 11:47:21,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 11:47:21,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2755 transitions. [2023-11-26 11:47:21,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-26 11:47:21,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:21,253 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:21,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:47:21,254 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:21,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:21,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1847496736, now seen corresponding path program 1 times [2023-11-26 11:47:21,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:21,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636379075] [2023-11-26 11:47:21,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:21,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:47:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:47:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:47:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-26 11:47:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:47:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:47:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:47:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 11:47:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-26 11:47:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 11:47:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-26 11:47:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-26 11:47:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-26 11:47:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-26 11:47:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-26 11:47:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-26 11:47:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:47:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,428 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-26 11:47:21,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:21,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636379075] [2023-11-26 11:47:21,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636379075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:21,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:21,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:47:21,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130266843] [2023-11-26 11:47:21,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:21,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:47:21,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:21,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:47:21,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:47:21,432 INFO L87 Difference]: Start difference. First operand 1674 states and 2755 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 11:47:23,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:23,945 INFO L93 Difference]: Finished difference Result 4070 states and 6798 transitions. [2023-11-26 11:47:23,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:47:23,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 161 [2023-11-26 11:47:23,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:23,976 INFO L225 Difference]: With dead ends: 4070 [2023-11-26 11:47:23,976 INFO L226 Difference]: Without dead ends: 2584 [2023-11-26 11:47:23,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:47:23,988 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 1471 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 628 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 2442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 628 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:23,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1139 Invalid, 2442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [628 Valid, 1814 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-26 11:47:23,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2023-11-26 11:47:24,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 2457. [2023-11-26 11:47:24,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2457 states, 2009 states have (on average 1.6391239422598307) internal successors, (3293), 2068 states have internal predecessors, (3293), 400 states have call successors, (400), 43 states have call predecessors, (400), 47 states have return successors, (407), 400 states have call predecessors, (407), 399 states have call successors, (407) [2023-11-26 11:47:24,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 4100 transitions. [2023-11-26 11:47:24,122 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 4100 transitions. Word has length 161 [2023-11-26 11:47:24,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:24,123 INFO L495 AbstractCegarLoop]: Abstraction has 2457 states and 4100 transitions. [2023-11-26 11:47:24,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 11:47:24,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 4100 transitions. [2023-11-26 11:47:24,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-26 11:47:24,139 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:24,140 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:24,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:47:24,140 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:24,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:24,141 INFO L85 PathProgramCache]: Analyzing trace with hash -419829441, now seen corresponding path program 1 times [2023-11-26 11:47:24,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:24,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716407279] [2023-11-26 11:47:24,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:24,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:47:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:47:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:47:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-26 11:47:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:47:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:47:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:47:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 11:47:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-26 11:47:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 11:47:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-26 11:47:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-26 11:47:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-26 11:47:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-26 11:47:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-26 11:47:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-26 11:47:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:47:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,316 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-26 11:47:24,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:24,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716407279] [2023-11-26 11:47:24,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716407279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:24,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:24,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:47:24,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036200564] [2023-11-26 11:47:24,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:24,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:47:24,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:24,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:47:24,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:47:24,319 INFO L87 Difference]: Start difference. First operand 2457 states and 4100 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 11:47:26,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:26,821 INFO L93 Difference]: Finished difference Result 5908 states and 9969 transitions. [2023-11-26 11:47:26,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:47:26,822 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 162 [2023-11-26 11:47:26,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:26,853 INFO L225 Difference]: With dead ends: 5908 [2023-11-26 11:47:26,853 INFO L226 Difference]: Without dead ends: 3789 [2023-11-26 11:47:26,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:47:26,864 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 1475 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 1789 mSolverCounterSat, 630 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 2419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 630 IncrementalHoareTripleChecker+Valid, 1789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:26,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1137 Invalid, 2419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [630 Valid, 1789 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-26 11:47:26,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3789 states. [2023-11-26 11:47:27,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3789 to 3662. [2023-11-26 11:47:27,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 3052 states have (on average 1.6500655307994758) internal successors, (5036), 3137 states have internal predecessors, (5036), 562 states have call successors, (562), 43 states have call predecessors, (562), 47 states have return successors, (569), 562 states have call predecessors, (569), 561 states have call successors, (569) [2023-11-26 11:47:27,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 6167 transitions. [2023-11-26 11:47:27,092 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 6167 transitions. Word has length 162 [2023-11-26 11:47:27,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:27,093 INFO L495 AbstractCegarLoop]: Abstraction has 3662 states and 6167 transitions. [2023-11-26 11:47:27,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 11:47:27,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 6167 transitions. [2023-11-26 11:47:27,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-26 11:47:27,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:27,119 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:27,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:47:27,119 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:27,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:27,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1363527751, now seen corresponding path program 1 times [2023-11-26 11:47:27,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:27,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373118859] [2023-11-26 11:47:27,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:27,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:47:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:47:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:47:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-26 11:47:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:47:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:47:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:47:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 11:47:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-26 11:47:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 11:47:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-26 11:47:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-26 11:47:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-26 11:47:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-26 11:47:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-26 11:47:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-11-26 11:47:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:47:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,296 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-26 11:47:27,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:27,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373118859] [2023-11-26 11:47:27,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373118859] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:27,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:27,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:47:27,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730462970] [2023-11-26 11:47:27,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:27,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:47:27,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:27,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:47:27,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:47:27,299 INFO L87 Difference]: Start difference. First operand 3662 states and 6167 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 11:47:29,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:29,816 INFO L93 Difference]: Finished difference Result 8808 states and 14974 transitions. [2023-11-26 11:47:29,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:47:29,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 163 [2023-11-26 11:47:29,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:29,860 INFO L225 Difference]: With dead ends: 8808 [2023-11-26 11:47:29,860 INFO L226 Difference]: Without dead ends: 5733 [2023-11-26 11:47:29,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:47:29,872 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 1479 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 631 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 2412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 631 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:29,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1139 Invalid, 2412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [631 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-26 11:47:29,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5733 states. [2023-11-26 11:47:30,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5733 to 5606. [2023-11-26 11:47:30,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5606 states, 4751 states have (on average 1.6583877078509788) internal successors, (7879), 4880 states have internal predecessors, (7879), 807 states have call successors, (807), 43 states have call predecessors, (807), 47 states have return successors, (814), 807 states have call predecessors, (814), 806 states have call successors, (814) [2023-11-26 11:47:30,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5606 states to 5606 states and 9500 transitions. [2023-11-26 11:47:30,204 INFO L78 Accepts]: Start accepts. Automaton has 5606 states and 9500 transitions. Word has length 163 [2023-11-26 11:47:30,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:30,204 INFO L495 AbstractCegarLoop]: Abstraction has 5606 states and 9500 transitions. [2023-11-26 11:47:30,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 11:47:30,205 INFO L276 IsEmpty]: Start isEmpty. Operand 5606 states and 9500 transitions. [2023-11-26 11:47:30,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-11-26 11:47:30,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:30,242 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:30,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:47:30,243 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:30,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:30,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1924471801, now seen corresponding path program 1 times [2023-11-26 11:47:30,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:30,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780545170] [2023-11-26 11:47:30,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:30,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:47:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:47:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:47:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-26 11:47:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:47:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:47:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:47:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 11:47:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-26 11:47:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 11:47:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-26 11:47:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-26 11:47:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-26 11:47:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-26 11:47:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-26 11:47:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-26 11:47:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:47:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,393 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-26 11:47:30,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:30,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780545170] [2023-11-26 11:47:30,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780545170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:30,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:30,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:47:30,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987827021] [2023-11-26 11:47:30,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:30,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:47:30,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:30,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:47:30,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:47:30,397 INFO L87 Difference]: Start difference. First operand 5606 states and 9500 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21)