./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 619b5b07f7bee6d460265c38ff6f46d0f3c88b87f6fc28a24021d9529c74e42f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:18:43,776 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:18:43,899 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:18:43,909 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:18:43,911 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:18:43,947 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:18:43,947 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:18:43,948 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:18:43,948 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:18:43,949 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:18:43,949 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:18:43,950 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:18:43,951 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:18:43,951 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:18:43,951 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:18:43,952 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:18:43,952 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:18:43,953 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:18:43,953 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:18:43,953 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:18:43,954 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:18:43,955 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:18:43,955 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:18:43,955 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:18:43,956 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:18:43,956 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:18:43,956 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:18:43,957 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:18:43,957 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:18:43,957 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:18:43,958 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:18:43,958 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:18:43,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:18:43,959 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:18:43,959 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:18:43,960 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:18:43,960 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:18:43,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:18:43,961 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:18:43,961 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:18:43,961 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:18:43,962 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:18:43,962 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_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 619b5b07f7bee6d460265c38ff6f46d0f3c88b87f6fc28a24021d9529c74e42f [2024-10-31 22:18:44,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:18:44,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:18:44,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:18:44,405 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:18:44,405 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:18:44,406 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/product-lines/email_spec4_product28.cil.c Unable to find full path for "g++" [2024-10-31 22:18:46,644 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:18:47,085 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:18:47,086 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/sv-benchmarks/c/product-lines/email_spec4_product28.cil.c [2024-10-31 22:18:47,108 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/data/6d1a495f9/2657b40efb934c7f8e3113d5862f4800/FLAG37d5a5822 [2024-10-31 22:18:47,126 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/data/6d1a495f9/2657b40efb934c7f8e3113d5862f4800 [2024-10-31 22:18:47,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:18:47,132 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:18:47,135 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:18:47,135 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:18:47,142 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:18:47,143 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:18:47" (1/1) ... [2024-10-31 22:18:47,147 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f8785a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:47, skipping insertion in model container [2024-10-31 22:18:47,147 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:18:47" (1/1) ... [2024-10-31 22:18:47,221 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:18:47,699 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/sv-benchmarks/c/product-lines/email_spec4_product28.cil.c[8467,8480] [2024-10-31 22:18:48,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:18:48,233 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:18:48,265 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2024-10-31 22:18:48,267 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [97] [2024-10-31 22:18:48,268 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [445] [2024-10-31 22:18:48,269 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [454] [2024-10-31 22:18:48,269 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [471] [2024-10-31 22:18:48,270 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [871] [2024-10-31 22:18:48,270 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1092] [2024-10-31 22:18:48,270 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2167] [2024-10-31 22:18:48,271 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2303] [2024-10-31 22:18:48,271 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignForward_spec.i","") [2568] [2024-10-31 22:18:48,271 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2595] [2024-10-31 22:18:48,295 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/sv-benchmarks/c/product-lines/email_spec4_product28.cil.c[8467,8480] [2024-10-31 22:18:48,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:18:48,473 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:18:48,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:48 WrapperNode [2024-10-31 22:18:48,474 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:18:48,475 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:18:48,475 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:18:48,475 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:18:48,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:48" (1/1) ... [2024-10-31 22:18:48,513 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:48" (1/1) ... [2024-10-31 22:18:48,581 INFO L138 Inliner]: procedures = 128, calls = 196, calls flagged for inlining = 55, calls inlined = 45, statements flattened = 859 [2024-10-31 22:18:48,582 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:18:48,583 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:18:48,583 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:18:48,583 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:18:48,600 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:48" (1/1) ... [2024-10-31 22:18:48,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:48" (1/1) ... [2024-10-31 22:18:48,612 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:48" (1/1) ... [2024-10-31 22:18:48,663 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2024-10-31 22:18:48,663 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:48" (1/1) ... [2024-10-31 22:18:48,664 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:48" (1/1) ... [2024-10-31 22:18:48,707 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:48" (1/1) ... [2024-10-31 22:18:48,733 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:48" (1/1) ... [2024-10-31 22:18:48,745 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:48" (1/1) ... [2024-10-31 22:18:48,762 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:48" (1/1) ... [2024-10-31 22:18:48,785 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:18:48,792 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:18:48,792 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:18:48,792 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:18:48,793 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:48" (1/1) ... [2024-10-31 22:18:48,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:18:48,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:48,850 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:48,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:18:48,915 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-10-31 22:18:48,916 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-10-31 22:18:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-10-31 22:18:48,916 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-10-31 22:18:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-10-31 22:18:48,917 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-10-31 22:18:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-10-31 22:18:48,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-10-31 22:18:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-10-31 22:18:48,919 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-10-31 22:18:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-10-31 22:18:48,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-10-31 22:18:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-10-31 22:18:48,920 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-10-31 22:18:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-10-31 22:18:48,921 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-10-31 22:18:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-10-31 22:18:48,922 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-10-31 22:18:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-10-31 22:18:48,922 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-10-31 22:18:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-10-31 22:18:48,925 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-10-31 22:18:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-10-31 22:18:48,925 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-10-31 22:18:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:18:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-10-31 22:18:48,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-10-31 22:18:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-10-31 22:18:48,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-10-31 22:18:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-10-31 22:18:48,926 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-10-31 22:18:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-10-31 22:18:48,927 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-10-31 22:18:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-10-31 22:18:48,929 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-10-31 22:18:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-10-31 22:18:48,929 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-10-31 22:18:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-10-31 22:18:48,929 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-10-31 22:18:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-10-31 22:18:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-10-31 22:18:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-10-31 22:18:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-10-31 22:18:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:18:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:18:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:18:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 22:18:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-10-31 22:18:48,932 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-10-31 22:18:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:18:48,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:18:49,196 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:18:49,199 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:18:50,336 INFO L? ?]: Removed 399 outVars from TransFormulas that were not future-live. [2024-10-31 22:18:50,337 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:18:50,373 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:18:50,373 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:18:50,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:18:50 BoogieIcfgContainer [2024-10-31 22:18:50,374 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:18:50,376 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:18:50,378 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:18:50,381 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:18:50,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:18:47" (1/3) ... [2024-10-31 22:18:50,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b0030e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:18:50, skipping insertion in model container [2024-10-31 22:18:50,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:48" (2/3) ... [2024-10-31 22:18:50,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b0030e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:18:50, skipping insertion in model container [2024-10-31 22:18:50,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:18:50" (3/3) ... [2024-10-31 22:18:50,384 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product28.cil.c [2024-10-31 22:18:50,402 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:18:50,402 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:18:50,508 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:18:50,515 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2a9114d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:18:50,515 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:18:50,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 327 states, 253 states have (on average 1.5217391304347827) internal successors, (385), 257 states have internal predecessors, (385), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-10-31 22:18:50,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-31 22:18:50,540 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:50,541 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:50,541 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:50,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:50,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1302958000, now seen corresponding path program 1 times [2024-10-31 22:18:50,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:50,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929047638] [2024-10-31 22:18:50,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:50,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:51,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:18:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:51,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:18:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:51,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:18:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:51,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 22:18:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:51,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 22:18:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:51,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:18:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:51,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 22:18:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:51,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-31 22:18:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:51,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-31 22:18:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:51,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-31 22:18:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:51,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-31 22:18:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:51,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-31 22:18:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:51,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-31 22:18:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:51,544 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-31 22:18:51,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:51,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929047638] [2024-10-31 22:18:51,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929047638] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:51,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299053489] [2024-10-31 22:18:51,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:51,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:51,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:51,552 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:51,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:18:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:51,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-31 22:18:51,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-31 22:18:51,995 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:18:51,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299053489] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:51,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:18:51,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2024-10-31 22:18:51,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781279225] [2024-10-31 22:18:52,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:52,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:18:52,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:52,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:18:52,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:18:52,048 INFO L87 Difference]: Start difference. First operand has 327 states, 253 states have (on average 1.5217391304347827) internal successors, (385), 257 states have internal predecessors, (385), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-10-31 22:18:52,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:52,142 INFO L93 Difference]: Finished difference Result 505 states and 732 transitions. [2024-10-31 22:18:52,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:18:52,144 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2024-10-31 22:18:52,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:52,164 INFO L225 Difference]: With dead ends: 505 [2024-10-31 22:18:52,165 INFO L226 Difference]: Without dead ends: 320 [2024-10-31 22:18:52,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:18:52,174 INFO L432 NwaCegarLoop]: 481 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:52,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:18:52,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-10-31 22:18:52,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2024-10-31 22:18:52,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 247 states have (on average 1.51417004048583) internal successors, (374), 250 states have internal predecessors, (374), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-10-31 22:18:52,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 473 transitions. [2024-10-31 22:18:52,271 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 473 transitions. Word has length 104 [2024-10-31 22:18:52,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:52,274 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 473 transitions. [2024-10-31 22:18:52,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-10-31 22:18:52,275 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 473 transitions. [2024-10-31 22:18:52,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-31 22:18:52,287 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:52,288 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:52,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:18:52,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-10-31 22:18:52,489 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:52,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:52,490 INFO L85 PathProgramCache]: Analyzing trace with hash 598678511, now seen corresponding path program 1 times [2024-10-31 22:18:52,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:52,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927759222] [2024-10-31 22:18:52,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:52,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:52,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:18:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:52,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:18:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:52,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:18:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:52,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 22:18:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:52,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 22:18:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:52,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:18:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:52,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-31 22:18:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:52,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-31 22:18:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:52,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-31 22:18:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:52,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-31 22:18:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:52,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-31 22:18:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:52,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-31 22:18:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:52,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-31 22:18:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:52,956 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-31 22:18:52,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:52,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927759222] [2024-10-31 22:18:52,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927759222] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:52,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796778237] [2024-10-31 22:18:52,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:52,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:52,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:52,960 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:52,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:18:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:53,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:18:53,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:53,335 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-31 22:18:53,336 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:18:53,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796778237] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:53,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:18:53,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-10-31 22:18:53,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98042066] [2024-10-31 22:18:53,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:53,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:18:53,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:53,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:18:53,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:18:53,339 INFO L87 Difference]: Start difference. First operand 320 states and 473 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-10-31 22:18:53,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:53,397 INFO L93 Difference]: Finished difference Result 495 states and 713 transitions. [2024-10-31 22:18:53,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:18:53,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 105 [2024-10-31 22:18:53,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:53,404 INFO L225 Difference]: With dead ends: 495 [2024-10-31 22:18:53,404 INFO L226 Difference]: Without dead ends: 323 [2024-10-31 22:18:53,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:18:53,411 INFO L432 NwaCegarLoop]: 471 mSDtfsCounter, 1 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:53,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 940 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:18:53,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-10-31 22:18:53,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 322. [2024-10-31 22:18:53,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 249 states have (on average 1.5100401606425702) internal successors, (376), 252 states have internal predecessors, (376), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-10-31 22:18:53,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 475 transitions. [2024-10-31 22:18:53,448 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 475 transitions. Word has length 105 [2024-10-31 22:18:53,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:53,449 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 475 transitions. [2024-10-31 22:18:53,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-10-31 22:18:53,449 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 475 transitions. [2024-10-31 22:18:53,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-10-31 22:18:53,453 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:53,453 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:53,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:18:53,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:53,654 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:53,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:53,655 INFO L85 PathProgramCache]: Analyzing trace with hash 120398534, now seen corresponding path program 1 times [2024-10-31 22:18:53,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:53,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066434304] [2024-10-31 22:18:53,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:53,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:53,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:18:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:53,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:18:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:53,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:18:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:53,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 22:18:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:53,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 22:18:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:53,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:18:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:53,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-31 22:18:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:53,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-31 22:18:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:53,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-31 22:18:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:53,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-31 22:18:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:53,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-31 22:18:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:53,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-31 22:18:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:53,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-31 22:18:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:53,982 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-31 22:18:53,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:53,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066434304] [2024-10-31 22:18:53,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066434304] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:53,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445713085] [2024-10-31 22:18:53,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:53,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:53,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:53,986 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:53,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:18:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:54,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:18:54,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:54,395 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-31 22:18:54,395 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:18:54,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445713085] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:54,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:18:54,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-10-31 22:18:54,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311233533] [2024-10-31 22:18:54,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:54,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:18:54,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:54,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:18:54,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:18:54,401 INFO L87 Difference]: Start difference. First operand 322 states and 475 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-10-31 22:18:54,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:54,452 INFO L93 Difference]: Finished difference Result 669 states and 1001 transitions. [2024-10-31 22:18:54,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:18:54,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2024-10-31 22:18:54,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:54,456 INFO L225 Difference]: With dead ends: 669 [2024-10-31 22:18:54,458 INFO L226 Difference]: Without dead ends: 374 [2024-10-31 22:18:54,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:18:54,463 INFO L432 NwaCegarLoop]: 492 mSDtfsCounter, 99 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:54,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 919 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:18:54,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-10-31 22:18:54,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 366. [2024-10-31 22:18:54,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 282 states have (on average 1.524822695035461) internal successors, (430), 285 states have internal predecessors, (430), 61 states have call successors, (61), 22 states have call predecessors, (61), 22 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-10-31 22:18:54,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 551 transitions. [2024-10-31 22:18:54,500 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 551 transitions. Word has length 111 [2024-10-31 22:18:54,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:54,502 INFO L471 AbstractCegarLoop]: Abstraction has 366 states and 551 transitions. [2024-10-31 22:18:54,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-10-31 22:18:54,503 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 551 transitions. [2024-10-31 22:18:54,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-31 22:18:54,508 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:54,509 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:54,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:18:54,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:54,710 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:54,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:54,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1427798971, now seen corresponding path program 1 times [2024-10-31 22:18:54,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:54,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197887527] [2024-10-31 22:18:54,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:54,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:54,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:18:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:54,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:18:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:54,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:18:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:54,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 22:18:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:54,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 22:18:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:54,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:18:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:54,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-31 22:18:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:55,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-31 22:18:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:55,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-31 22:18:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:55,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-31 22:18:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:55,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-31 22:18:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:55,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-31 22:18:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:55,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-31 22:18:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-31 22:18:55,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:55,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197887527] [2024-10-31 22:18:55,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197887527] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:55,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92862042] [2024-10-31 22:18:55,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:55,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:55,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:55,028 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:55,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:18:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:55,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 1003 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:18:55,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-31 22:18:55,510 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:18:55,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92862042] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:55,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:18:55,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-10-31 22:18:55,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097883486] [2024-10-31 22:18:55,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:55,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:18:55,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:55,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:18:55,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:18:55,513 INFO L87 Difference]: Start difference. First operand 366 states and 551 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-10-31 22:18:55,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:55,604 INFO L93 Difference]: Finished difference Result 723 states and 1092 transitions. [2024-10-31 22:18:55,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:18:55,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2024-10-31 22:18:55,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:55,610 INFO L225 Difference]: With dead ends: 723 [2024-10-31 22:18:55,611 INFO L226 Difference]: Without dead ends: 368 [2024-10-31 22:18:55,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:18:55,614 INFO L432 NwaCegarLoop]: 465 mSDtfsCounter, 2 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:55,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1849 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:18:55,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-10-31 22:18:55,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2024-10-31 22:18:55,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 283 states have (on average 1.5229681978798586) internal successors, (431), 287 states have internal predecessors, (431), 61 states have call successors, (61), 22 states have call predecessors, (61), 23 states have return successors, (62), 60 states have call predecessors, (62), 60 states have call successors, (62) [2024-10-31 22:18:55,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 554 transitions. [2024-10-31 22:18:55,645 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 554 transitions. Word has length 112 [2024-10-31 22:18:55,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:55,646 INFO L471 AbstractCegarLoop]: Abstraction has 368 states and 554 transitions. [2024-10-31 22:18:55,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-10-31 22:18:55,650 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 554 transitions. [2024-10-31 22:18:55,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-10-31 22:18:55,652 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:55,653 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:55,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:55,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:55,857 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:55,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:55,858 INFO L85 PathProgramCache]: Analyzing trace with hash -221648282, now seen corresponding path program 1 times [2024-10-31 22:18:55,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:55,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220659987] [2024-10-31 22:18:55,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:55,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:56,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:18:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:56,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:18:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:56,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:18:56,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:56,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:18:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:56,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-31 22:18:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:56,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 22:18:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:56,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-31 22:18:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:56,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-31 22:18:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:56,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-31 22:18:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:56,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-31 22:18:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:56,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-31 22:18:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:56,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-31 22:18:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:56,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-31 22:18:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:56,183 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:18:56,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:56,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220659987] [2024-10-31 22:18:56,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220659987] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:56,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128028175] [2024-10-31 22:18:56,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:56,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:56,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:56,187 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:56,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:18:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:56,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:18:56,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:56,621 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-31 22:18:56,621 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:18:56,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128028175] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:56,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:18:56,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2024-10-31 22:18:56,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943818437] [2024-10-31 22:18:56,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:56,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:18:56,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:56,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:18:56,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:18:56,625 INFO L87 Difference]: Start difference. First operand 368 states and 554 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-10-31 22:18:56,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:56,713 INFO L93 Difference]: Finished difference Result 725 states and 1097 transitions. [2024-10-31 22:18:56,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:18:56,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2024-10-31 22:18:56,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:56,716 INFO L225 Difference]: With dead ends: 725 [2024-10-31 22:18:56,717 INFO L226 Difference]: Without dead ends: 370 [2024-10-31 22:18:56,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:18:56,719 INFO L432 NwaCegarLoop]: 463 mSDtfsCounter, 2 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:56,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1835 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:18:56,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-10-31 22:18:56,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2024-10-31 22:18:56,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 284 states have (on average 1.5211267605633803) internal successors, (432), 289 states have internal predecessors, (432), 61 states have call successors, (61), 22 states have call predecessors, (61), 24 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2024-10-31 22:18:56,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 560 transitions. [2024-10-31 22:18:56,769 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 560 transitions. Word has length 113 [2024-10-31 22:18:56,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:56,769 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 560 transitions. [2024-10-31 22:18:56,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-10-31 22:18:56,770 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 560 transitions. [2024-10-31 22:18:56,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-10-31 22:18:56,772 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:56,772 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:56,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:56,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:56,977 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:56,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:56,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1645047527, now seen corresponding path program 1 times [2024-10-31 22:18:56,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:56,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742669922] [2024-10-31 22:18:56,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:56,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:57,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:18:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:57,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:18:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:57,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:18:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:57,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:18:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:57,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 22:18:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:57,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-31 22:18:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:57,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-31 22:18:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:57,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-31 22:18:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:57,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-31 22:18:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:57,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-31 22:18:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:57,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-31 22:18:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:57,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-31 22:18:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:57,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-31 22:18:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:57,239 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-31 22:18:57,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:57,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742669922] [2024-10-31 22:18:57,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742669922] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:57,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:57,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:18:57,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828507319] [2024-10-31 22:18:57,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:57,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:18:57,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:57,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:18:57,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:18:57,242 INFO L87 Difference]: Start difference. First operand 370 states and 560 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-10-31 22:18:59,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:59,464 INFO L93 Difference]: Finished difference Result 788 states and 1199 transitions. [2024-10-31 22:18:59,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:18:59,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2024-10-31 22:18:59,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:59,468 INFO L225 Difference]: With dead ends: 788 [2024-10-31 22:18:59,468 INFO L226 Difference]: Without dead ends: 441 [2024-10-31 22:18:59,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:18:59,470 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 767 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1921 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 2150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:59,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 926 Invalid, 2150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1921 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-31 22:18:59,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2024-10-31 22:18:59,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 370. [2024-10-31 22:18:59,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 284 states have (on average 1.5211267605633803) internal successors, (432), 289 states have internal predecessors, (432), 61 states have call successors, (61), 22 states have call predecessors, (61), 24 states have return successors, (66), 60 states have call predecessors, (66), 60 states have call successors, (66) [2024-10-31 22:18:59,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 559 transitions. [2024-10-31 22:18:59,511 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 559 transitions. Word has length 114 [2024-10-31 22:18:59,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:59,511 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 559 transitions. [2024-10-31 22:18:59,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-10-31 22:18:59,512 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 559 transitions. [2024-10-31 22:18:59,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-10-31 22:18:59,516 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:59,516 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:59,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:18:59,517 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:59,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:59,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1269941286, now seen corresponding path program 2 times [2024-10-31 22:18:59,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:59,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001159861] [2024-10-31 22:18:59,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:59,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:59,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:18:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:59,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:18:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:59,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:18:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:59,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:18:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:59,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 22:18:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:59,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 22:18:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:59,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-31 22:18:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:59,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-31 22:18:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:59,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-31 22:18:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:59,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-31 22:18:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:59,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-31 22:18:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:59,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-31 22:18:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:59,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-31 22:18:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:59,776 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-31 22:18:59,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:59,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001159861] [2024-10-31 22:18:59,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001159861] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:59,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:59,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:18:59,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780580733] [2024-10-31 22:18:59,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:59,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:18:59,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:59,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:18:59,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:18:59,779 INFO L87 Difference]: Start difference. First operand 370 states and 559 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-10-31 22:19:01,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:01,806 INFO L93 Difference]: Finished difference Result 790 states and 1202 transitions. [2024-10-31 22:19:01,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:19:01,806 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2024-10-31 22:19:01,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:01,810 INFO L225 Difference]: With dead ends: 790 [2024-10-31 22:19:01,810 INFO L226 Difference]: Without dead ends: 443 [2024-10-31 22:19:01,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:19:01,813 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 764 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 2161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:01,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 926 Invalid, 2161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-31 22:19:01,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2024-10-31 22:19:01,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 372. [2024-10-31 22:19:01,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 285 states have (on average 1.5192982456140351) internal successors, (433), 291 states have internal predecessors, (433), 61 states have call successors, (61), 22 states have call predecessors, (61), 25 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2024-10-31 22:19:01,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 562 transitions. [2024-10-31 22:19:01,853 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 562 transitions. Word has length 115 [2024-10-31 22:19:01,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:01,853 INFO L471 AbstractCegarLoop]: Abstraction has 372 states and 562 transitions. [2024-10-31 22:19:01,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-10-31 22:19:01,854 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 562 transitions. [2024-10-31 22:19:01,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-10-31 22:19:01,856 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:01,857 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:01,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:19:01,857 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:01,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:01,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1415974892, now seen corresponding path program 1 times [2024-10-31 22:19:01,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:01,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287576241] [2024-10-31 22:19:01,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:01,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:02,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:19:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:02,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:19:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:02,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:19:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:02,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:19:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:02,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 22:19:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:02,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-31 22:19:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:02,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-31 22:19:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:02,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-31 22:19:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:02,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-31 22:19:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:02,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-31 22:19:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:02,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-31 22:19:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:02,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-31 22:19:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:02,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-31 22:19:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:19:02,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:02,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287576241] [2024-10-31 22:19:02,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287576241] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:02,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:02,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-31 22:19:02,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015198845] [2024-10-31 22:19:02,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:02,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:19:02,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:02,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:19:02,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:19:02,173 INFO L87 Difference]: Start difference. First operand 372 states and 562 transitions. Second operand has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2024-10-31 22:19:04,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:04,995 INFO L93 Difference]: Finished difference Result 788 states and 1197 transitions. [2024-10-31 22:19:04,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:19:04,996 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2024-10-31 22:19:04,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:05,000 INFO L225 Difference]: With dead ends: 788 [2024-10-31 22:19:05,001 INFO L226 Difference]: Without dead ends: 443 [2024-10-31 22:19:05,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2024-10-31 22:19:05,003 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 767 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 3282 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 3516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 3282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:05,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1329 Invalid, 3516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 3282 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-31 22:19:05,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2024-10-31 22:19:05,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 372. [2024-10-31 22:19:05,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 285 states have (on average 1.5192982456140351) internal successors, (433), 291 states have internal predecessors, (433), 61 states have call successors, (61), 22 states have call predecessors, (61), 25 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2024-10-31 22:19:05,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 561 transitions. [2024-10-31 22:19:05,080 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 561 transitions. Word has length 116 [2024-10-31 22:19:05,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:05,080 INFO L471 AbstractCegarLoop]: Abstraction has 372 states and 561 transitions. [2024-10-31 22:19:05,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2024-10-31 22:19:05,081 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 561 transitions. [2024-10-31 22:19:05,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-10-31 22:19:05,084 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:05,084 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:05,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:19:05,084 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:05,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:05,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1004440397, now seen corresponding path program 2 times [2024-10-31 22:19:05,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:05,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307538646] [2024-10-31 22:19:05,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:05,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:05,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:19:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:05,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:19:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:05,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:19:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:05,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:19:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:05,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 22:19:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:05,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-31 22:19:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:05,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-31 22:19:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:05,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-31 22:19:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:05,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-31 22:19:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:05,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-31 22:19:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:05,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-31 22:19:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:05,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-31 22:19:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:05,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-31 22:19:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:05,454 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:19:05,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:05,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307538646] [2024-10-31 22:19:05,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307538646] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:05,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:05,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-31 22:19:05,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125056717] [2024-10-31 22:19:05,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:05,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:19:05,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:05,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:19:05,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:19:05,456 INFO L87 Difference]: Start difference. First operand 372 states and 561 transitions. Second operand has 11 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2024-10-31 22:19:08,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:08,398 INFO L93 Difference]: Finished difference Result 790 states and 1203 transitions. [2024-10-31 22:19:08,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:19:08,399 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 117 [2024-10-31 22:19:08,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:08,402 INFO L225 Difference]: With dead ends: 790 [2024-10-31 22:19:08,402 INFO L226 Difference]: Without dead ends: 445 [2024-10-31 22:19:08,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2024-10-31 22:19:08,407 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 764 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 3316 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 3548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 3316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:08,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 1330 Invalid, 3548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 3316 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-31 22:19:08,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-10-31 22:19:08,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 374. [2024-10-31 22:19:08,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 286 states have (on average 1.5174825174825175) internal successors, (434), 293 states have internal predecessors, (434), 61 states have call successors, (61), 22 states have call predecessors, (61), 26 states have return successors, (72), 60 states have call predecessors, (72), 60 states have call successors, (72) [2024-10-31 22:19:08,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 567 transitions. [2024-10-31 22:19:08,444 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 567 transitions. Word has length 117 [2024-10-31 22:19:08,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:08,444 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 567 transitions. [2024-10-31 22:19:08,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2024-10-31 22:19:08,445 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 567 transitions. [2024-10-31 22:19:08,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-10-31 22:19:08,447 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:08,447 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:08,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:19:08,448 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:08,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:08,448 INFO L85 PathProgramCache]: Analyzing trace with hash 945960143, now seen corresponding path program 1 times [2024-10-31 22:19:08,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:08,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822812687] [2024-10-31 22:19:08,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:08,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:08,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:19:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:08,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:19:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:08,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:19:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:08,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:19:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:08,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 22:19:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:08,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-31 22:19:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:08,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-31 22:19:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:08,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-31 22:19:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:08,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-31 22:19:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:08,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-31 22:19:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:08,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-31 22:19:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:08,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-31 22:19:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:08,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-31 22:19:08,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:08,644 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-31 22:19:08,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:08,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822812687] [2024-10-31 22:19:08,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822812687] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:19:08,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281630217] [2024-10-31 22:19:08,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:08,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:08,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:08,647 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:19:08,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:19:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:09,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:19:09,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:19:09,263 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-31 22:19:09,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:19:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-31 22:19:09,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281630217] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:19:09,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:19:09,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2024-10-31 22:19:09,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700999816] [2024-10-31 22:19:09,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:19:09,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:19:09,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:09,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:19:09,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:19:09,404 INFO L87 Difference]: Start difference. First operand 374 states and 567 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-10-31 22:19:11,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:11,438 INFO L93 Difference]: Finished difference Result 944 states and 1501 transitions. [2024-10-31 22:19:11,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:19:11,439 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 118 [2024-10-31 22:19:11,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:11,445 INFO L225 Difference]: With dead ends: 944 [2024-10-31 22:19:11,446 INFO L226 Difference]: Without dead ends: 772 [2024-10-31 22:19:11,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:19:11,448 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 1145 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 1969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:11,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1190 Valid, 1206 Invalid, 1969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 1616 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-31 22:19:11,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2024-10-31 22:19:11,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 677. [2024-10-31 22:19:11,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 525 states have (on average 1.5847619047619048) internal successors, (832), 532 states have internal predecessors, (832), 125 states have call successors, (125), 22 states have call predecessors, (125), 26 states have return successors, (146), 124 states have call predecessors, (146), 124 states have call successors, (146) [2024-10-31 22:19:11,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1103 transitions. [2024-10-31 22:19:11,505 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1103 transitions. Word has length 118 [2024-10-31 22:19:11,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:11,506 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 1103 transitions. [2024-10-31 22:19:11,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-10-31 22:19:11,506 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1103 transitions. [2024-10-31 22:19:11,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-31 22:19:11,511 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:11,511 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:11,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-31 22:19:11,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f37e437-75a2-4b83-86fc-9ed027b53c51/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-31 22:19:11,715 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:11,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:11,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2125577554, now seen corresponding path program 1 times [2024-10-31 22:19:11,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:11,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924827197] [2024-10-31 22:19:11,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:11,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:11,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:19:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:11,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:19:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:11,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:19:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:11,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:19:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:11,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 22:19:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:11,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-31 22:19:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:11,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-31 22:19:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:11,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-31 22:19:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:11,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-31 22:19:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:11,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-31 22:19:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:11,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-31 22:19:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:11,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-31 22:19:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:11,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-31 22:19:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:11,856 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-31 22:19:11,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:11,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924827197] [2024-10-31 22:19:11,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924827197] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:11,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:11,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:19:11,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608412438] [2024-10-31 22:19:11,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:11,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:19:11,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:11,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:19:11,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:19:11,859 INFO L87 Difference]: Start difference. First operand 677 states and 1103 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-10-31 22:19:13,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:13,186 INFO L93 Difference]: Finished difference Result 1665 states and 2780 transitions. [2024-10-31 22:19:13,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:19:13,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2024-10-31 22:19:13,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:13,194 INFO L225 Difference]: With dead ends: 1665 [2024-10-31 22:19:13,194 INFO L226 Difference]: Without dead ends: 1056 [2024-10-31 22:19:13,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:19:13,198 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 860 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:13,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 670 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-31 22:19:13,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2024-10-31 22:19:13,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 977. [2024-10-31 22:19:13,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 761 states have (on average 1.5992115637319317) internal successors, (1217), 768 states have internal predecessors, (1217), 189 states have call successors, (189), 22 states have call predecessors, (189), 26 states have return successors, (220), 188 states have call predecessors, (220), 188 states have call successors, (220) [2024-10-31 22:19:13,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1626 transitions. [2024-10-31 22:19:13,264 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1626 transitions. Word has length 124 [2024-10-31 22:19:13,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:13,264 INFO L471 AbstractCegarLoop]: Abstraction has 977 states and 1626 transitions. [2024-10-31 22:19:13,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-10-31 22:19:13,265 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1626 transitions. [2024-10-31 22:19:13,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-10-31 22:19:13,271 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:13,271 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:13,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:19:13,272 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:13,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:13,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1685662962, now seen corresponding path program 1 times [2024-10-31 22:19:13,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:13,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26494390] [2024-10-31 22:19:13,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:13,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:13,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:19:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:13,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:19:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:13,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:19:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:13,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:19:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:13,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 22:19:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:13,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-31 22:19:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:13,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-31 22:19:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:13,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-31 22:19:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:13,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-31 22:19:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:13,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-31 22:19:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:13,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-31 22:19:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:13,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-31 22:19:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:13,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-31 22:19:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:13,402 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-31 22:19:13,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:13,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26494390] [2024-10-31 22:19:13,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26494390] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:13,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:13,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:19:13,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356731432] [2024-10-31 22:19:13,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:13,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:19:13,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:13,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:19:13,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:19:13,404 INFO L87 Difference]: Start difference. First operand 977 states and 1626 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13)