./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB --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 6f40464de6444b4c527a3fd043e201dc912ddaed5b163e61d0d1df63c7a25d4d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:30:28,913 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:30:29,021 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:30:29,032 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:30:29,032 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:30:29,080 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:30:29,082 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:30:29,082 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:30:29,083 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:30:29,084 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:30:29,085 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:30:29,085 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:30:29,086 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:30:29,086 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:30:29,086 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:30:29,087 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:30:29,087 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:30:29,087 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:30:29,087 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:30:29,088 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:30:29,088 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:30:29,088 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:30:29,088 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:30:29,089 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:30:29,089 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:30:29,089 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:30:29,089 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:30:29,089 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:30:29,089 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:30:29,090 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:30:29,090 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:30:29,090 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:30:29,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:30:29,090 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:30:29,090 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:30:29,090 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:30:29,090 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:30:29,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:30:29,091 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:30:29,091 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:30:29,091 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:30:29,091 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:30:29,091 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:30:29,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:30:29,091 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:30:29,091 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:30:29,093 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:30:29,093 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:30:29,093 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 6f40464de6444b4c527a3fd043e201dc912ddaed5b163e61d0d1df63c7a25d4d [2024-11-27 20:30:29,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:30:29,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:30:29,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:30:29,540 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:30:29,540 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:30:29,542 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/email_spec3_product28.cil.c [2024-11-27 20:30:33,236 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/data/bef725079/923e70884de64ee899202f2ea2b77014/FLAG135aca652 [2024-11-27 20:30:33,785 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:30:33,786 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/sv-benchmarks/c/product-lines/email_spec3_product28.cil.c [2024-11-27 20:30:33,821 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/data/bef725079/923e70884de64ee899202f2ea2b77014/FLAG135aca652 [2024-11-27 20:30:34,311 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/data/bef725079/923e70884de64ee899202f2ea2b77014 [2024-11-27 20:30:34,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:30:34,317 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:30:34,319 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:30:34,319 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:30:34,325 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:30:34,326 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:30:34" (1/1) ... [2024-11-27 20:30:34,327 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1671e2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:34, skipping insertion in model container [2024-11-27 20:30:34,327 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:30:34" (1/1) ... [2024-11-27 20:30:34,408 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:30:34,754 WARN L250 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_701f28d6-91b6-4b9d-9142-6aa3309961cc/sv-benchmarks/c/product-lines/email_spec3_product28.cil.c[6522,6535] [2024-11-27 20:30:35,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:30:35,242 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:30:35,253 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [48] [2024-11-27 20:30:35,255 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignVerify_spec.i","") [208] [2024-11-27 20:30:35,255 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [270] [2024-11-27 20:30:35,256 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [279] [2024-11-27 20:30:35,256 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [645] [2024-11-27 20:30:35,256 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1724] [2024-11-27 20:30:35,256 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2007] [2024-11-27 20:30:35,257 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2409] [2024-11-27 20:30:35,257 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2622] [2024-11-27 20:30:35,257 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2639] [2024-11-27 20:30:35,257 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2674] [2024-11-27 20:30:35,277 WARN L250 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_701f28d6-91b6-4b9d-9142-6aa3309961cc/sv-benchmarks/c/product-lines/email_spec3_product28.cil.c[6522,6535] [2024-11-27 20:30:35,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:30:35,514 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:30:35,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:35 WrapperNode [2024-11-27 20:30:35,514 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:30:35,515 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:30:35,515 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:30:35,516 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:30:35,521 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:35" (1/1) ... [2024-11-27 20:30:35,548 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:35" (1/1) ... [2024-11-27 20:30:35,609 INFO L138 Inliner]: procedures = 129, calls = 203, calls flagged for inlining = 55, calls inlined = 45, statements flattened = 887 [2024-11-27 20:30:35,610 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:30:35,611 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:30:35,611 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:30:35,611 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:30:35,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:35" (1/1) ... [2024-11-27 20:30:35,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:35" (1/1) ... [2024-11-27 20:30:35,629 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:35" (1/1) ... [2024-11-27 20:30:35,679 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]. [2024-11-27 20:30:35,680 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:35" (1/1) ... [2024-11-27 20:30:35,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:35" (1/1) ... [2024-11-27 20:30:35,713 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:35" (1/1) ... [2024-11-27 20:30:35,720 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:35" (1/1) ... [2024-11-27 20:30:35,746 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:35" (1/1) ... [2024-11-27 20:30:35,756 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:35" (1/1) ... [2024-11-27 20:30:35,760 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:35" (1/1) ... [2024-11-27 20:30:35,768 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:30:35,769 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:30:35,769 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:30:35,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:30:35,771 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:35" (1/1) ... [2024-11-27 20:30:35,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:30:35,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:35,834 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:30:35,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:30:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-11-27 20:30:35,920 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-11-27 20:30:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-11-27 20:30:35,920 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-11-27 20:30:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-11-27 20:30:35,920 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-11-27 20:30:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-27 20:30:35,920 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-27 20:30:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-27 20:30:35,921 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-27 20:30:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-11-27 20:30:35,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-11-27 20:30:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-27 20:30:35,922 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-27 20:30:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-11-27 20:30:35,922 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-11-27 20:30:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-11-27 20:30:35,923 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-11-27 20:30:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-27 20:30:35,923 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-27 20:30:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-11-27 20:30:35,923 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-11-27 20:30:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-27 20:30:35,927 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-27 20:30:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:30:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-11-27 20:30:35,927 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-11-27 20:30:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-11-27 20:30:35,927 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-11-27 20:30:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-27 20:30:35,927 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-27 20:30:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-27 20:30:35,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-27 20:30:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-27 20:30:35,928 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-27 20:30:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-27 20:30:35,928 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-27 20:30:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-11-27 20:30:35,928 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-11-27 20:30:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-27 20:30:35,928 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-27 20:30:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-11-27 20:30:35,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-11-27 20:30:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-27 20:30:35,929 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-27 20:30:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:30:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:30:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 20:30:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 20:30:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-27 20:30:35,929 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-27 20:30:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:30:35,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:30:36,244 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:30:36,246 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:30:37,574 INFO L? ?]: Removed 405 outVars from TransFormulas that were not future-live. [2024-11-27 20:30:37,574 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:30:37,614 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:30:37,615 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:30:37,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:30:37 BoogieIcfgContainer [2024-11-27 20:30:37,615 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:30:37,620 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:30:37,620 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:30:37,628 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:30:37,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:30:34" (1/3) ... [2024-11-27 20:30:37,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719880f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:30:37, skipping insertion in model container [2024-11-27 20:30:37,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:35" (2/3) ... [2024-11-27 20:30:37,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719880f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:30:37, skipping insertion in model container [2024-11-27 20:30:37,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:30:37" (3/3) ... [2024-11-27 20:30:37,633 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec3_product28.cil.c [2024-11-27 20:30:37,656 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:30:37,661 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec3_product28.cil.c that has 24 procedures, 337 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:30:37,787 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:30:37,811 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;@9f8d1f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:30:37,811 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:30:37,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 337 states, 257 states have (on average 1.517509727626459) internal successors, (390), 263 states have internal predecessors, (390), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2024-11-27 20:30:37,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-27 20:30:37,856 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:37,857 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:37,858 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:37,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:37,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1479481056, now seen corresponding path program 1 times [2024-11-27 20:30:37,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:37,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125050619] [2024-11-27 20:30:37,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:37,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:39,139 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-27 20:30:39,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:39,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125050619] [2024-11-27 20:30:39,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125050619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:39,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142548359] [2024-11-27 20:30:39,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:39,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:39,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:39,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:39,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:30:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:39,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:30:39,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:39,869 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-27 20:30:39,870 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:30:39,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142548359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:39,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:30:39,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-27 20:30:39,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780676733] [2024-11-27 20:30:39,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:39,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:30:39,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:39,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:30:39,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:39,907 INFO L87 Difference]: Start difference. First operand has 337 states, 257 states have (on average 1.517509727626459) internal successors, (390), 263 states have internal predecessors, (390), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:30:40,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:40,052 INFO L93 Difference]: Finished difference Result 527 states and 768 transitions. [2024-11-27 20:30:40,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:30:40,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2024-11-27 20:30:40,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:40,073 INFO L225 Difference]: With dead ends: 527 [2024-11-27 20:30:40,073 INFO L226 Difference]: Without dead ends: 331 [2024-11-27 20:30:40,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:40,083 INFO L435 NwaCegarLoop]: 492 mSDtfsCounter, 1 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:40,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 981 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:40,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-27 20:30:40,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 330. [2024-11-27 20:30:40,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 252 states have (on average 1.507936507936508) internal successors, (380), 256 states have internal predecessors, (380), 55 states have call successors, (55), 23 states have call predecessors, (55), 22 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-27 20:30:40,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 487 transitions. [2024-11-27 20:30:40,205 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 487 transitions. Word has length 127 [2024-11-27 20:30:40,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:40,207 INFO L471 AbstractCegarLoop]: Abstraction has 330 states and 487 transitions. [2024-11-27 20:30:40,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:30:40,208 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 487 transitions. [2024-11-27 20:30:40,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-27 20:30:40,215 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:40,215 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:40,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:30:40,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:40,416 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:40,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:40,417 INFO L85 PathProgramCache]: Analyzing trace with hash -231112316, now seen corresponding path program 1 times [2024-11-27 20:30:40,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:40,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914334335] [2024-11-27 20:30:40,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:40,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 20:30:41,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:41,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914334335] [2024-11-27 20:30:41,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914334335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:41,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283186796] [2024-11-27 20:30:41,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:41,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:41,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:41,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:41,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:30:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:41,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:30:41,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:41,670 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-27 20:30:41,671 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:30:41,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283186796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:41,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:30:41,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-27 20:30:41,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365245794] [2024-11-27 20:30:41,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:41,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:30:41,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:41,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:30:41,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:41,677 INFO L87 Difference]: Start difference. First operand 330 states and 487 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:30:41,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:41,755 INFO L93 Difference]: Finished difference Result 685 states and 1025 transitions. [2024-11-27 20:30:41,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:30:41,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 132 [2024-11-27 20:30:41,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:41,766 INFO L225 Difference]: With dead ends: 685 [2024-11-27 20:30:41,766 INFO L226 Difference]: Without dead ends: 381 [2024-11-27 20:30:41,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:41,774 INFO L435 NwaCegarLoop]: 500 mSDtfsCounter, 99 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:41,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 940 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:41,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-27 20:30:41,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 373. [2024-11-27 20:30:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 284 states have (on average 1.5246478873239437) internal successors, (433), 288 states have internal predecessors, (433), 66 states have call successors, (66), 23 states have call predecessors, (66), 22 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2024-11-27 20:30:41,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 562 transitions. [2024-11-27 20:30:41,835 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 562 transitions. Word has length 132 [2024-11-27 20:30:41,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:41,837 INFO L471 AbstractCegarLoop]: Abstraction has 373 states and 562 transitions. [2024-11-27 20:30:41,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:30:41,838 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 562 transitions. [2024-11-27 20:30:41,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-27 20:30:41,846 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:41,846 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:41,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:30:42,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:42,051 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:42,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:42,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1337332369, now seen corresponding path program 1 times [2024-11-27 20:30:42,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:42,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062584195] [2024-11-27 20:30:42,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:42,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:42,465 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 20:30:42,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:42,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062584195] [2024-11-27 20:30:42,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062584195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:42,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145188902] [2024-11-27 20:30:42,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:42,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:42,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:42,471 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:42,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:30:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:42,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:30:42,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 20:30:43,075 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:30:43,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145188902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:43,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:30:43,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-27 20:30:43,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340500985] [2024-11-27 20:30:43,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:43,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:30:43,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:43,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:30:43,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:30:43,080 INFO L87 Difference]: Start difference. First operand 373 states and 562 transitions. Second operand has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 20:30:43,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:43,206 INFO L93 Difference]: Finished difference Result 737 states and 1114 transitions. [2024-11-27 20:30:43,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:30:43,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 133 [2024-11-27 20:30:43,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:43,213 INFO L225 Difference]: With dead ends: 737 [2024-11-27 20:30:43,214 INFO L226 Difference]: Without dead ends: 375 [2024-11-27 20:30:43,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:30:43,217 INFO L435 NwaCegarLoop]: 478 mSDtfsCounter, 2 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:43,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1901 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:30:43,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-11-27 20:30:43,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2024-11-27 20:30:43,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 285 states have (on average 1.5228070175438597) internal successors, (434), 290 states have internal predecessors, (434), 66 states have call successors, (66), 23 states have call predecessors, (66), 23 states have return successors, (65), 63 states have call predecessors, (65), 63 states have call successors, (65) [2024-11-27 20:30:43,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 565 transitions. [2024-11-27 20:30:43,263 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 565 transitions. Word has length 133 [2024-11-27 20:30:43,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:43,264 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 565 transitions. [2024-11-27 20:30:43,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 20:30:43,265 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 565 transitions. [2024-11-27 20:30:43,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-27 20:30:43,271 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:43,272 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:43,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:30:43,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:43,476 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:43,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:43,477 INFO L85 PathProgramCache]: Analyzing trace with hash 46990481, now seen corresponding path program 1 times [2024-11-27 20:30:43,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:43,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458630732] [2024-11-27 20:30:43,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:43,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:43,847 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:30:43,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:43,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458630732] [2024-11-27 20:30:43,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458630732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:43,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414250194] [2024-11-27 20:30:43,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:43,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:43,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:43,852 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:43,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:30:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:44,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 1131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:30:44,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:44,447 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 20:30:44,452 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:30:44,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414250194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:44,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:30:44,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-27 20:30:44,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379587152] [2024-11-27 20:30:44,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:44,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:30:44,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:44,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:30:44,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:30:44,457 INFO L87 Difference]: Start difference. First operand 375 states and 565 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 20:30:44,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:44,591 INFO L93 Difference]: Finished difference Result 739 states and 1119 transitions. [2024-11-27 20:30:44,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:30:44,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 134 [2024-11-27 20:30:44,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:44,597 INFO L225 Difference]: With dead ends: 739 [2024-11-27 20:30:44,597 INFO L226 Difference]: Without dead ends: 377 [2024-11-27 20:30:44,600 INFO L434 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 [2024-11-27 20:30:44,601 INFO L435 NwaCegarLoop]: 476 mSDtfsCounter, 2 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1887 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 [2024-11-27 20:30:44,605 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1887 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:30:44,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-27 20:30:44,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2024-11-27 20:30:44,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 286 states have (on average 1.520979020979021) internal successors, (435), 292 states have internal predecessors, (435), 66 states have call successors, (66), 23 states have call predecessors, (66), 24 states have return successors, (70), 63 states have call predecessors, (70), 63 states have call successors, (70) [2024-11-27 20:30:44,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 571 transitions. [2024-11-27 20:30:44,646 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 571 transitions. Word has length 134 [2024-11-27 20:30:44,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:44,647 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 571 transitions. [2024-11-27 20:30:44,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 20:30:44,648 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 571 transitions. [2024-11-27 20:30:44,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-27 20:30:44,652 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:44,653 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:44,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 20:30:44,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:44,857 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:44,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:44,858 INFO L85 PathProgramCache]: Analyzing trace with hash 433053064, now seen corresponding path program 1 times [2024-11-27 20:30:44,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:44,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564437594] [2024-11-27 20:30:44,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:44,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:45,165 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 20:30:45,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:45,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564437594] [2024-11-27 20:30:45,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564437594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:45,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:45,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:30:45,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139309495] [2024-11-27 20:30:45,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:45,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:30:45,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:45,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:30:45,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:30:45,169 INFO L87 Difference]: Start difference. First operand 377 states and 571 transitions. Second operand has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 20:30:45,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:45,257 INFO L93 Difference]: Finished difference Result 731 states and 1110 transitions. [2024-11-27 20:30:45,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:30:45,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 135 [2024-11-27 20:30:45,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:45,263 INFO L225 Difference]: With dead ends: 731 [2024-11-27 20:30:45,263 INFO L226 Difference]: Without dead ends: 377 [2024-11-27 20:30:45,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:30:45,268 INFO L435 NwaCegarLoop]: 479 mSDtfsCounter, 2 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:45,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1905 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:45,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-27 20:30:45,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2024-11-27 20:30:45,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 286 states have (on average 1.520979020979021) internal successors, (435), 292 states have internal predecessors, (435), 66 states have call successors, (66), 23 states have call predecessors, (66), 24 states have return successors, (69), 63 states have call predecessors, (69), 63 states have call successors, (69) [2024-11-27 20:30:45,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 570 transitions. [2024-11-27 20:30:45,310 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 570 transitions. Word has length 135 [2024-11-27 20:30:45,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:45,311 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 570 transitions. [2024-11-27 20:30:45,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 20:30:45,311 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 570 transitions. [2024-11-27 20:30:45,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-27 20:30:45,315 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:45,315 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:45,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:30:45,316 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:45,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:45,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1456796774, now seen corresponding path program 2 times [2024-11-27 20:30:45,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:45,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21597350] [2024-11-27 20:30:45,317 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:30:45,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:45,411 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:30:45,412 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:45,726 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-27 20:30:45,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:45,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21597350] [2024-11-27 20:30:45,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21597350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:45,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:45,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:30:45,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081052808] [2024-11-27 20:30:45,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:45,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:30:45,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:45,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:30:45,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:30:45,730 INFO L87 Difference]: Start difference. First operand 377 states and 570 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 20:30:46,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:46,574 INFO L93 Difference]: Finished difference Result 862 states and 1313 transitions. [2024-11-27 20:30:46,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:30:46,575 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 136 [2024-11-27 20:30:46,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:46,588 INFO L225 Difference]: With dead ends: 862 [2024-11-27 20:30:46,588 INFO L226 Difference]: Without dead ends: 688 [2024-11-27 20:30:46,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:30:46,592 INFO L435 NwaCegarLoop]: 485 mSDtfsCounter, 944 mSDsluCounter, 2152 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 2637 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:46,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 2637 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:30:46,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-11-27 20:30:46,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 641. [2024-11-27 20:30:46,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 493 states have (on average 1.5578093306288032) internal successors, (768), 500 states have internal predecessors, (768), 108 states have call successors, (108), 39 states have call predecessors, (108), 39 states have return successors, (121), 104 states have call predecessors, (121), 105 states have call successors, (121) [2024-11-27 20:30:46,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 997 transitions. [2024-11-27 20:30:46,696 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 997 transitions. Word has length 136 [2024-11-27 20:30:46,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:46,697 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 997 transitions. [2024-11-27 20:30:46,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 20:30:46,697 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 997 transitions. [2024-11-27 20:30:46,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-27 20:30:46,706 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:46,706 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:46,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:30:46,707 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:46,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:46,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1314635513, now seen corresponding path program 1 times [2024-11-27 20:30:46,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:46,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618464636] [2024-11-27 20:30:46,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:46,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:46,930 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-27 20:30:46,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:46,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618464636] [2024-11-27 20:30:46,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618464636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:46,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870983747] [2024-11-27 20:30:46,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:46,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:46,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:46,933 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:46,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:30:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:47,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 1136 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:30:47,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:47,525 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-27 20:30:47,525 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:30:47,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870983747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:47,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:30:47,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-27 20:30:47,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024438533] [2024-11-27 20:30:47,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:47,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:30:47,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:47,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:30:47,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:30:47,527 INFO L87 Difference]: Start difference. First operand 641 states and 997 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:30:47,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:47,701 INFO L93 Difference]: Finished difference Result 1265 states and 1975 transitions. [2024-11-27 20:30:47,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:30:47,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 139 [2024-11-27 20:30:47,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:47,714 INFO L225 Difference]: With dead ends: 1265 [2024-11-27 20:30:47,714 INFO L226 Difference]: Without dead ends: 647 [2024-11-27 20:30:47,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:30:47,719 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 1 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:47,720 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1902 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:30:47,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2024-11-27 20:30:47,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 643. [2024-11-27 20:30:47,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 494 states have (on average 1.55668016194332) internal successors, (769), 502 states have internal predecessors, (769), 108 states have call successors, (108), 39 states have call predecessors, (108), 40 states have return successors, (124), 104 states have call predecessors, (124), 105 states have call successors, (124) [2024-11-27 20:30:47,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1001 transitions. [2024-11-27 20:30:47,785 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1001 transitions. Word has length 139 [2024-11-27 20:30:47,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:47,785 INFO L471 AbstractCegarLoop]: Abstraction has 643 states and 1001 transitions. [2024-11-27 20:30:47,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:30:47,786 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1001 transitions. [2024-11-27 20:30:47,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-27 20:30:47,793 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:47,793 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:47,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 20:30:47,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:47,997 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:47,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:47,998 INFO L85 PathProgramCache]: Analyzing trace with hash -437046873, now seen corresponding path program 1 times [2024-11-27 20:30:47,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:47,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584525359] [2024-11-27 20:30:47,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:47,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:48,197 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-27 20:30:48,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:48,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584525359] [2024-11-27 20:30:48,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584525359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:48,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955007197] [2024-11-27 20:30:48,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:48,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:48,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:48,200 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:48,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:30:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:48,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:30:48,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:48,758 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 20:30:48,758 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:30:48,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955007197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:48,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:30:48,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-27 20:30:48,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827113310] [2024-11-27 20:30:48,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:48,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:30:48,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:48,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:30:48,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:30:48,761 INFO L87 Difference]: Start difference. First operand 643 states and 1001 transitions. Second operand has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 20:30:48,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:48,851 INFO L93 Difference]: Finished difference Result 1255 states and 1961 transitions. [2024-11-27 20:30:48,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:30:48,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 140 [2024-11-27 20:30:48,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:48,858 INFO L225 Difference]: With dead ends: 1255 [2024-11-27 20:30:48,858 INFO L226 Difference]: Without dead ends: 647 [2024-11-27 20:30:48,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:30:48,862 INFO L435 NwaCegarLoop]: 478 mSDtfsCounter, 1 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:48,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1901 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:48,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2024-11-27 20:30:48,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 647. [2024-11-27 20:30:48,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 496 states have (on average 1.5544354838709677) internal successors, (771), 506 states have internal predecessors, (771), 108 states have call successors, (108), 39 states have call predecessors, (108), 42 states have return successors, (127), 104 states have call predecessors, (127), 105 states have call successors, (127) [2024-11-27 20:30:48,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1006 transitions. [2024-11-27 20:30:48,912 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1006 transitions. Word has length 140 [2024-11-27 20:30:48,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:48,913 INFO L471 AbstractCegarLoop]: Abstraction has 647 states and 1006 transitions. [2024-11-27 20:30:48,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 20:30:48,913 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1006 transitions. [2024-11-27 20:30:48,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-27 20:30:48,918 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:48,919 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:48,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:30:49,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:49,120 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:49,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:49,121 INFO L85 PathProgramCache]: Analyzing trace with hash 708555772, now seen corresponding path program 1 times [2024-11-27 20:30:49,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:49,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754072426] [2024-11-27 20:30:49,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:49,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-27 20:30:49,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:49,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754072426] [2024-11-27 20:30:49,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754072426] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:49,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567844082] [2024-11-27 20:30:49,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:49,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:49,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:49,331 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:49,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:30:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:49,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:30:49,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:49,933 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-27 20:30:49,934 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:30:49,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567844082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:49,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:30:49,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-27 20:30:49,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816317104] [2024-11-27 20:30:49,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:49,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:30:49,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:49,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:30:49,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:30:49,937 INFO L87 Difference]: Start difference. First operand 647 states and 1006 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 20:30:50,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:50,063 INFO L93 Difference]: Finished difference Result 1257 states and 1963 transitions. [2024-11-27 20:30:50,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:30:50,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 141 [2024-11-27 20:30:50,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:50,071 INFO L225 Difference]: With dead ends: 1257 [2024-11-27 20:30:50,071 INFO L226 Difference]: Without dead ends: 653 [2024-11-27 20:30:50,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:30:50,077 INFO L435 NwaCegarLoop]: 476 mSDtfsCounter, 1 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1887 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:50,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1887 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:30:50,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2024-11-27 20:30:50,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 651. [2024-11-27 20:30:50,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 498 states have (on average 1.5522088353413654) internal successors, (773), 510 states have internal predecessors, (773), 108 states have call successors, (108), 39 states have call predecessors, (108), 44 states have return successors, (131), 104 states have call predecessors, (131), 105 states have call successors, (131) [2024-11-27 20:30:50,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1012 transitions. [2024-11-27 20:30:50,135 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1012 transitions. Word has length 141 [2024-11-27 20:30:50,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:50,136 INFO L471 AbstractCegarLoop]: Abstraction has 651 states and 1012 transitions. [2024-11-27 20:30:50,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 20:30:50,136 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1012 transitions. [2024-11-27 20:30:50,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-27 20:30:50,142 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:50,142 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:50,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:30:50,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:50,348 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:50,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:50,349 INFO L85 PathProgramCache]: Analyzing trace with hash -271334313, now seen corresponding path program 1 times [2024-11-27 20:30:50,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:50,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981638821] [2024-11-27 20:30:50,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:50,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:50,542 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-27 20:30:50,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:50,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981638821] [2024-11-27 20:30:50,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981638821] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:50,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496910644] [2024-11-27 20:30:50,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:50,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:50,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:50,547 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:50,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:30:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:51,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:30:51,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:51,100 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-27 20:30:51,101 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:30:51,259 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-27 20:30:51,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496910644] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:30:51,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:30:51,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-27 20:30:51,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130798447] [2024-11-27 20:30:51,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:51,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:30:51,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:51,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:30:51,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:30:51,262 INFO L87 Difference]: Start difference. First operand 651 states and 1012 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-27 20:30:51,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:51,569 INFO L93 Difference]: Finished difference Result 1533 states and 2486 transitions. [2024-11-27 20:30:51,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:30:51,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 140 [2024-11-27 20:30:51,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:51,583 INFO L225 Difference]: With dead ends: 1533 [2024-11-27 20:30:51,583 INFO L226 Difference]: Without dead ends: 1275 [2024-11-27 20:30:51,587 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:30:51,588 INFO L435 NwaCegarLoop]: 528 mSDtfsCounter, 460 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:51,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 1461 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:30:51,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2024-11-27 20:30:51,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1245. [2024-11-27 20:30:51,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 964 states have (on average 1.6151452282157677) internal successors, (1557), 976 states have internal predecessors, (1557), 236 states have call successors, (236), 39 states have call predecessors, (236), 44 states have return successors, (284), 232 states have call predecessors, (284), 233 states have call successors, (284) [2024-11-27 20:30:51,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 2077 transitions. [2024-11-27 20:30:51,768 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 2077 transitions. Word has length 140 [2024-11-27 20:30:51,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:51,769 INFO L471 AbstractCegarLoop]: Abstraction has 1245 states and 2077 transitions. [2024-11-27 20:30:51,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-27 20:30:51,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 2077 transitions. [2024-11-27 20:30:51,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-27 20:30:51,780 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:51,781 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:51,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:30:51,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 20:30:51,982 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:51,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:51,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1396194225, now seen corresponding path program 1 times [2024-11-27 20:30:51,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:51,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342248723] [2024-11-27 20:30:51,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:51,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:52,132 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-27 20:30:52,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:52,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342248723] [2024-11-27 20:30:52,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342248723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:52,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:52,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:30:52,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477681191] [2024-11-27 20:30:52,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:52,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:30:52,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:52,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:30:52,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:30:52,137 INFO L87 Difference]: Start difference. First operand 1245 states and 2077 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:30:52,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:52,299 INFO L93 Difference]: Finished difference Result 2965 states and 5023 transitions. [2024-11-27 20:30:52,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:30:52,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 147 [2024-11-27 20:30:52,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:52,321 INFO L225 Difference]: With dead ends: 2965 [2024-11-27 20:30:52,321 INFO L226 Difference]: Without dead ends: 1841 [2024-11-27 20:30:52,329 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:30:52,330 INFO L435 NwaCegarLoop]: 496 mSDtfsCounter, 97 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 978 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 [2024-11-27 20:30:52,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 978 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:52,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2024-11-27 20:30:52,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1831. [2024-11-27 20:30:52,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1422 states have (on average 1.6265822784810127) internal successors, (2313), 1434 states have internal predecessors, (2313), 364 states have call successors, (364), 39 states have call predecessors, (364), 44 states have return successors, (437), 360 states have call predecessors, (437), 361 states have call successors, (437) [2024-11-27 20:30:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 3114 transitions. [2024-11-27 20:30:52,517 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 3114 transitions. Word has length 147 [2024-11-27 20:30:52,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:52,518 INFO L471 AbstractCegarLoop]: Abstraction has 1831 states and 3114 transitions. [2024-11-27 20:30:52,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:30:52,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 3114 transitions. [2024-11-27 20:30:52,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-27 20:30:52,536 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:52,536 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:52,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 20:30:52,537 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:52,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:52,538 INFO L85 PathProgramCache]: Analyzing trace with hash 682951416, now seen corresponding path program 1 times [2024-11-27 20:30:52,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:52,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021466632] [2024-11-27 20:30:52,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:52,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:52,728 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-27 20:30:52,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:52,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021466632] [2024-11-27 20:30:52,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021466632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:52,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524103846] [2024-11-27 20:30:52,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:52,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:52,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:52,734 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:52,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:30:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:53,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:30:53,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:53,247 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-27 20:30:53,247 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:30:53,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524103846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:53,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:30:53,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-27 20:30:53,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595059636] [2024-11-27 20:30:53,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:53,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:30:53,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:53,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:30:53,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:53,250 INFO L87 Difference]: Start difference. First operand 1831 states and 3114 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:30:53,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:53,461 INFO L93 Difference]: Finished difference Result 4361 states and 7472 transitions. [2024-11-27 20:30:53,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:30:53,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 150 [2024-11-27 20:30:53,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:53,488 INFO L225 Difference]: With dead ends: 4361 [2024-11-27 20:30:53,489 INFO L226 Difference]: Without dead ends: 2753 [2024-11-27 20:30:53,497 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:53,498 INFO L435 NwaCegarLoop]: 494 mSDtfsCounter, 95 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 974 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 [2024-11-27 20:30:53,498 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 974 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:53,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2024-11-27 20:30:53,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 2743. [2024-11-27 20:30:53,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2743 states, 2144 states have (on average 1.6338619402985075) internal successors, (3503), 2156 states have internal predecessors, (3503), 554 states have call successors, (554), 39 states have call predecessors, (554), 44 states have return successors, (643), 550 states have call predecessors, (643), 551 states have call successors, (643) [2024-11-27 20:30:53,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2743 states to 2743 states and 4700 transitions. [2024-11-27 20:30:53,755 INFO L78 Accepts]: Start accepts. Automaton has 2743 states and 4700 transitions. Word has length 150 [2024-11-27 20:30:53,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:53,756 INFO L471 AbstractCegarLoop]: Abstraction has 2743 states and 4700 transitions. [2024-11-27 20:30:53,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:30:53,756 INFO L276 IsEmpty]: Start isEmpty. Operand 2743 states and 4700 transitions. [2024-11-27 20:30:53,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-27 20:30:53,784 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:53,785 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:53,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 20:30:53,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:53,986 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:53,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:53,988 INFO L85 PathProgramCache]: Analyzing trace with hash 630950735, now seen corresponding path program 1 times [2024-11-27 20:30:53,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:53,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853572729] [2024-11-27 20:30:53,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:53,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:54,093 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-27 20:30:54,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:54,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853572729] [2024-11-27 20:30:54,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853572729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:54,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:54,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:30:54,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778035971] [2024-11-27 20:30:54,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:54,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:30:54,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:54,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:30:54,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:30:54,098 INFO L87 Difference]: Start difference. First operand 2743 states and 4700 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:30:54,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:54,316 INFO L93 Difference]: Finished difference Result 6399 states and 11064 transitions. [2024-11-27 20:30:54,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:30:54,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 149 [2024-11-27 20:30:54,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:54,355 INFO L225 Difference]: With dead ends: 6399 [2024-11-27 20:30:54,356 INFO L226 Difference]: Without dead ends: 4121 [2024-11-27 20:30:54,369 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:30:54,371 INFO L435 NwaCegarLoop]: 485 mSDtfsCounter, 93 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 961 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 [2024-11-27 20:30:54,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 961 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:54,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4121 states. [2024-11-27 20:30:54,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4121 to 4111. [2024-11-27 20:30:54,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4111 states, 3266 states have (on average 1.6402327005511328) internal successors, (5357), 3278 states have internal predecessors, (5357), 800 states have call successors, (800), 39 states have call predecessors, (800), 44 states have return successors, (939), 796 states have call predecessors, (939), 797 states have call successors, (939) [2024-11-27 20:30:54,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4111 states to 4111 states and 7096 transitions. [2024-11-27 20:30:54,751 INFO L78 Accepts]: Start accepts. Automaton has 4111 states and 7096 transitions. Word has length 149 [2024-11-27 20:30:54,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:54,751 INFO L471 AbstractCegarLoop]: Abstraction has 4111 states and 7096 transitions. [2024-11-27 20:30:54,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:30:54,752 INFO L276 IsEmpty]: Start isEmpty. Operand 4111 states and 7096 transitions. [2024-11-27 20:30:54,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-27 20:30:54,787 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:54,788 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:54,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 20:30:54,788 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:54,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:54,789 INFO L85 PathProgramCache]: Analyzing trace with hash -121252162, now seen corresponding path program 1 times [2024-11-27 20:30:54,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:54,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327960043] [2024-11-27 20:30:54,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:54,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:54,900 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-27 20:30:54,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:54,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327960043] [2024-11-27 20:30:54,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327960043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:54,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:54,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:30:54,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548929792] [2024-11-27 20:30:54,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:54,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:30:54,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:54,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:30:54,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:30:54,903 INFO L87 Difference]: Start difference. First operand 4111 states and 7096 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:30:55,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:55,184 INFO L93 Difference]: Finished difference Result 9545 states and 16618 transitions. [2024-11-27 20:30:55,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:30:55,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 150 [2024-11-27 20:30:55,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:55,237 INFO L225 Difference]: With dead ends: 9545 [2024-11-27 20:30:55,237 INFO L226 Difference]: Without dead ends: 6293 [2024-11-27 20:30:55,255 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:30:55,256 INFO L435 NwaCegarLoop]: 485 mSDtfsCounter, 91 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 961 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 [2024-11-27 20:30:55,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 961 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:55,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6293 states. [2024-11-27 20:30:55,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6293 to 6283. [2024-11-27 20:30:55,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6283 states, 5080 states have (on average 1.6442913385826772) internal successors, (8353), 5092 states have internal predecessors, (8353), 1158 states have call successors, (1158), 39 states have call predecessors, (1158), 44 states have return successors, (1380), 1154 states have call predecessors, (1380), 1155 states have call successors, (1380) [2024-11-27 20:30:55,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6283 states to 6283 states and 10891 transitions. [2024-11-27 20:30:55,832 INFO L78 Accepts]: Start accepts. Automaton has 6283 states and 10891 transitions. Word has length 150 [2024-11-27 20:30:55,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:55,837 INFO L471 AbstractCegarLoop]: Abstraction has 6283 states and 10891 transitions. [2024-11-27 20:30:55,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:30:55,837 INFO L276 IsEmpty]: Start isEmpty. Operand 6283 states and 10891 transitions. [2024-11-27 20:30:55,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-27 20:30:55,935 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:55,936 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:55,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 20:30:55,936 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:55,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:55,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1043179117, now seen corresponding path program 1 times [2024-11-27 20:30:55,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:55,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57697081] [2024-11-27 20:30:55,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:55,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:56,052 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-27 20:30:56,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:56,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57697081] [2024-11-27 20:30:56,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57697081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:56,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:56,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:30:56,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448537410] [2024-11-27 20:30:56,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:56,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:30:56,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:56,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:30:56,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:30:56,056 INFO L87 Difference]: Start difference. First operand 6283 states and 10891 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:30:56,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:56,649 INFO L93 Difference]: Finished difference Result 15227 states and 26553 transitions. [2024-11-27 20:30:56,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:30:56,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 151 [2024-11-27 20:30:56,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:56,730 INFO L225 Difference]: With dead ends: 15227 [2024-11-27 20:30:56,730 INFO L226 Difference]: Without dead ends: 10245 [2024-11-27 20:30:56,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:30:56,764 INFO L435 NwaCegarLoop]: 503 mSDtfsCounter, 89 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 987 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 [2024-11-27 20:30:56,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 987 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:56,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10245 states. [2024-11-27 20:30:57,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10245 to 10235. [2024-11-27 20:30:57,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10235 states, 8280 states have (on average 1.636111111111111) internal successors, (13547), 8292 states have internal predecessors, (13547), 1910 states have call successors, (1910), 39 states have call predecessors, (1910), 44 states have return successors, (2276), 1906 states have call predecessors, (2276), 1907 states have call successors, (2276) [2024-11-27 20:30:57,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10235 states to 10235 states and 17733 transitions. [2024-11-27 20:30:57,554 INFO L78 Accepts]: Start accepts. Automaton has 10235 states and 17733 transitions. Word has length 151 [2024-11-27 20:30:57,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:57,555 INFO L471 AbstractCegarLoop]: Abstraction has 10235 states and 17733 transitions. [2024-11-27 20:30:57,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:30:57,555 INFO L276 IsEmpty]: Start isEmpty. Operand 10235 states and 17733 transitions. [2024-11-27 20:30:57,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-27 20:30:57,638 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:57,638 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:57,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 20:30:57,639 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:57,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:57,640 INFO L85 PathProgramCache]: Analyzing trace with hash -775342982, now seen corresponding path program 1 times [2024-11-27 20:30:57,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:57,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90219445] [2024-11-27 20:30:57,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:57,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:57,737 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-27 20:30:57,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:57,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90219445] [2024-11-27 20:30:57,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90219445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:57,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:57,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:30:57,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961707550] [2024-11-27 20:30:57,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:57,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:30:57,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:57,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:30:57,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:30:57,742 INFO L87 Difference]: Start difference. First operand 10235 states and 17733 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:30:58,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:58,479 INFO L93 Difference]: Finished difference Result 25245 states and 43955 transitions. [2024-11-27 20:30:58,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:30:58,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2024-11-27 20:30:58,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:58,599 INFO L225 Difference]: With dead ends: 25245 [2024-11-27 20:30:58,599 INFO L226 Difference]: Without dead ends: 17033 [2024-11-27 20:30:58,643 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:30:58,645 INFO L435 NwaCegarLoop]: 494 mSDtfsCounter, 87 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 974 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 [2024-11-27 20:30:58,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 974 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:58,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17033 states. [2024-11-27 20:30:59,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17033 to 17023. [2024-11-27 20:30:59,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17023 states, 13856 states have (on average 1.6330109699769053) internal successors, (22627), 13868 states have internal predecessors, (22627), 3122 states have call successors, (3122), 39 states have call predecessors, (3122), 44 states have return successors, (3677), 3118 states have call predecessors, (3677), 3119 states have call successors, (3677) [2024-11-27 20:30:59,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17023 states to 17023 states and 29426 transitions. [2024-11-27 20:30:59,836 INFO L78 Accepts]: Start accepts. Automaton has 17023 states and 29426 transitions. Word has length 152 [2024-11-27 20:30:59,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:59,837 INFO L471 AbstractCegarLoop]: Abstraction has 17023 states and 29426 transitions. [2024-11-27 20:30:59,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:30:59,837 INFO L276 IsEmpty]: Start isEmpty. Operand 17023 states and 29426 transitions. [2024-11-27 20:30:59,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-27 20:30:59,942 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:59,943 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:59,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 20:30:59,943 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:59,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:59,945 INFO L85 PathProgramCache]: Analyzing trace with hash 230700920, now seen corresponding path program 1 times [2024-11-27 20:30:59,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:59,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819944244] [2024-11-27 20:30:59,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:59,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:31:00,259 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-27 20:31:00,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:31:00,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819944244] [2024-11-27 20:31:00,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819944244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:31:00,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970581704] [2024-11-27 20:31:00,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:31:00,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:31:00,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:31:00,266 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:31:00,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:31:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:31:00,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:31:00,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:31:00,902 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-27 20:31:00,902 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:31:00,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970581704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:31:00,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:31:00,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-27 20:31:00,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249646700] [2024-11-27 20:31:00,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:31:00,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:31:00,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:31:00,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:31:00,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:31:00,907 INFO L87 Difference]: Start difference. First operand 17023 states and 29426 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:31:02,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:31:02,487 INFO L93 Difference]: Finished difference Result 44087 states and 76505 transitions. [2024-11-27 20:31:02,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:31:02,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 155 [2024-11-27 20:31:02,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:31:02,684 INFO L225 Difference]: With dead ends: 44087 [2024-11-27 20:31:02,684 INFO L226 Difference]: Without dead ends: 29887 [2024-11-27 20:31:02,741 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:31:02,742 INFO L435 NwaCegarLoop]: 502 mSDtfsCounter, 85 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 986 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 [2024-11-27 20:31:02,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 986 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:31:02,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29887 states. [2024-11-27 20:31:04,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29887 to 29877. [2024-11-27 20:31:04,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29877 states, 24304 states have (on average 1.6222432521395656) internal successors, (39427), 24316 states have internal predecessors, (39427), 5528 states have call successors, (5528), 39 states have call predecessors, (5528), 44 states have return successors, (6508), 5524 states have call predecessors, (6508), 5525 states have call successors, (6508) [2024-11-27 20:31:05,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29877 states to 29877 states and 51463 transitions. [2024-11-27 20:31:05,168 INFO L78 Accepts]: Start accepts. Automaton has 29877 states and 51463 transitions. Word has length 155 [2024-11-27 20:31:05,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:31:05,169 INFO L471 AbstractCegarLoop]: Abstraction has 29877 states and 51463 transitions. [2024-11-27 20:31:05,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:31:05,169 INFO L276 IsEmpty]: Start isEmpty. Operand 29877 states and 51463 transitions. [2024-11-27 20:31:05,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-27 20:31:05,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:31:05,338 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:31:05,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 20:31:05,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 20:31:05,544 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:31:05,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:31:05,545 INFO L85 PathProgramCache]: Analyzing trace with hash 137795609, now seen corresponding path program 1 times [2024-11-27 20:31:05,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:31:05,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993657666] [2024-11-27 20:31:05,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:31:05,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:31:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:31:05,695 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-27 20:31:05,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:31:05,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993657666] [2024-11-27 20:31:05,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993657666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:31:05,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:31:05,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:31:05,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667960614] [2024-11-27 20:31:05,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:31:05,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:31:05,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:31:05,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:31:05,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:31:05,698 INFO L87 Difference]: Start difference. First operand 29877 states and 51463 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:31:08,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:31:08,065 INFO L93 Difference]: Finished difference Result 79119 states and 136914 transitions. [2024-11-27 20:31:08,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:31:08,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 154 [2024-11-27 20:31:08,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:31:08,460 INFO L225 Difference]: With dead ends: 79119 [2024-11-27 20:31:08,460 INFO L226 Difference]: Without dead ends: 53221 [2024-11-27 20:31:08,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:31:08,579 INFO L435 NwaCegarLoop]: 485 mSDtfsCounter, 83 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 964 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 [2024-11-27 20:31:08,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 964 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:31:08,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53221 states. [2024-11-27 20:31:11,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53221 to 53211. [2024-11-27 20:31:11,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53211 states, 43560 states have (on average 1.6170110192837466) internal successors, (70437), 43572 states have internal predecessors, (70437), 9606 states have call successors, (9606), 39 states have call predecessors, (9606), 44 states have return successors, (11400), 9602 states have call predecessors, (11400), 9603 states have call successors, (11400) [2024-11-27 20:31:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53211 states to 53211 states and 91443 transitions. [2024-11-27 20:31:12,055 INFO L78 Accepts]: Start accepts. Automaton has 53211 states and 91443 transitions. Word has length 154 [2024-11-27 20:31:12,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:31:12,056 INFO L471 AbstractCegarLoop]: Abstraction has 53211 states and 91443 transitions. [2024-11-27 20:31:12,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:31:12,056 INFO L276 IsEmpty]: Start isEmpty. Operand 53211 states and 91443 transitions. [2024-11-27 20:31:12,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-27 20:31:12,527 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:31:12,528 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:31:12,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 20:31:12,528 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:31:12,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:31:12,529 INFO L85 PathProgramCache]: Analyzing trace with hash 535951126, now seen corresponding path program 1 times [2024-11-27 20:31:12,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:31:12,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299114633] [2024-11-27 20:31:12,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:31:12,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:31:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:31:12,771 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-27 20:31:12,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:31:12,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299114633] [2024-11-27 20:31:12,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299114633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:31:12,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204626232] [2024-11-27 20:31:12,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:31:12,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:31:12,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:31:12,775 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:31:12,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:31:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:31:13,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:31:13,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:31:13,411 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-27 20:31:13,412 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:31:13,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204626232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:31:13,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:31:13,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-27 20:31:13,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402321127] [2024-11-27 20:31:13,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:31:13,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:31:13,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:31:13,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:31:13,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:31:13,415 INFO L87 Difference]: Start difference. First operand 53211 states and 91443 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:31:16,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:31:16,711 INFO L93 Difference]: Finished difference Result 145023 states and 249598 transitions. [2024-11-27 20:31:16,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:31:16,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 157 [2024-11-27 20:31:16,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:31:17,437 INFO L225 Difference]: With dead ends: 145023 [2024-11-27 20:31:17,437 INFO L226 Difference]: Without dead ends: 97181 [2024-11-27 20:31:17,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:31:17,856 INFO L435 NwaCegarLoop]: 488 mSDtfsCounter, 81 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 967 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 [2024-11-27 20:31:17,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 967 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:31:17,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97181 states. [2024-11-27 20:31:22,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97181 to 97171. [2024-11-27 20:31:22,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97171 states, 80090 states have (on average 1.6104507429142214) internal successors, (128981), 80102 states have internal predecessors, (128981), 17036 states have call successors, (17036), 39 states have call predecessors, (17036), 44 states have return successors, (19894), 17032 states have call predecessors, (19894), 17033 states have call successors, (19894) [2024-11-27 20:31:23,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97171 states to 97171 states and 165911 transitions. [2024-11-27 20:31:23,874 INFO L78 Accepts]: Start accepts. Automaton has 97171 states and 165911 transitions. Word has length 157 [2024-11-27 20:31:23,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:31:23,875 INFO L471 AbstractCegarLoop]: Abstraction has 97171 states and 165911 transitions. [2024-11-27 20:31:23,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:31:23,876 INFO L276 IsEmpty]: Start isEmpty. Operand 97171 states and 165911 transitions. [2024-11-27 20:31:24,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-27 20:31:24,111 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:31:24,111 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:31:24,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-27 20:31:24,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:31:24,313 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:31:24,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:31:24,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1905135886, now seen corresponding path program 1 times [2024-11-27 20:31:24,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:31:24,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147885877] [2024-11-27 20:31:24,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:31:24,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:31:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:31:24,502 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-27 20:31:24,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:31:24,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147885877] [2024-11-27 20:31:24,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147885877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:31:24,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488966579] [2024-11-27 20:31:24,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:31:24,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:31:24,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:31:24,506 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:31:24,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f28d6-91b6-4b9d-9142-6aa3309961cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 20:31:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:31:25,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 1183 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:31:25,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:31:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-27 20:31:25,117 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:31:25,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488966579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:31:25,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:31:25,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-27 20:31:25,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379952475] [2024-11-27 20:31:25,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:31:25,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:31:25,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:31:25,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:31:25,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:31:25,121 INFO L87 Difference]: Start difference. First operand 97171 states and 165911 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:31:30,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:31:30,195 INFO L93 Difference]: Finished difference Result 180951 states and 309675 transitions. [2024-11-27 20:31:30,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:31:30,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 158 [2024-11-27 20:31:30,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:31:31,569 INFO L225 Difference]: With dead ends: 180951 [2024-11-27 20:31:31,569 INFO L226 Difference]: Without dead ends: 180693 [2024-11-27 20:31:31,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:31:31,646 INFO L435 NwaCegarLoop]: 494 mSDtfsCounter, 76 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:31:31,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 978 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:31:31,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180693 states. [2024-11-27 20:31:38,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180693 to 180683. [2024-11-27 20:31:38,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180683 states, 150004 states have (on average 1.602470600783979) internal successors, (240377), 150016 states have internal predecessors, (240377), 30634 states have call successors, (30634), 39 states have call predecessors, (30634), 44 states have return successors, (36107), 30630 states have call predecessors, (36107), 30631 states have call successors, (36107)