./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product30.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_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/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_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/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_2938be22-e57e-4757-8ac9-f7da354e344b/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 bcbcb0270b2ee5ae38e5dd3a933d2995b5c0488c9590f16a6543c0c656cfb023 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:06:50,870 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:06:50,981 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:06:50,993 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:06:50,993 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:06:51,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:06:51,039 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:06:51,039 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:06:51,040 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:06:51,040 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:06:51,042 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:06:51,042 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:06:51,043 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:06:51,043 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:06:51,044 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:06:51,044 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:06:51,045 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:06:51,045 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:06:51,045 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:06:51,045 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:06:51,045 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:06:51,045 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:06:51,045 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:06:51,045 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:06:51,045 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:06:51,046 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:06:51,046 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:06:51,046 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:06:51,046 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:06:51,046 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:06:51,046 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:06:51,046 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:06:51,046 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:06:51,046 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:06:51,047 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:06:51,047 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:06:51,047 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:06:51,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:06:51,047 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:06:51,047 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:06:51,047 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:06:51,047 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:06:51,047 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:06:51,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:06:51,049 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:06:51,050 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:06:51,050 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:06:51,050 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:06:51,050 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_2938be22-e57e-4757-8ac9-f7da354e344b/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 -> bcbcb0270b2ee5ae38e5dd3a933d2995b5c0488c9590f16a6543c0c656cfb023 [2024-11-28 02:06:51,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:06:51,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:06:51,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:06:51,461 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:06:51,461 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:06:51,464 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/email_spec3_product30.cil.c [2024-11-28 02:06:54,521 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/data/e8b336b5b/1f34d71e72d84918b9b5c7eaa25db8ba/FLAGdc2f69346 [2024-11-28 02:06:55,113 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:06:55,118 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/sv-benchmarks/c/product-lines/email_spec3_product30.cil.c [2024-11-28 02:06:55,153 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/data/e8b336b5b/1f34d71e72d84918b9b5c7eaa25db8ba/FLAGdc2f69346 [2024-11-28 02:06:55,182 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/data/e8b336b5b/1f34d71e72d84918b9b5c7eaa25db8ba [2024-11-28 02:06:55,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:06:55,189 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:06:55,190 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:06:55,192 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:06:55,201 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:06:55,204 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:06:55" (1/1) ... [2024-11-28 02:06:55,205 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60cad5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:55, skipping insertion in model container [2024-11-28 02:06:55,205 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:06:55" (1/1) ... [2024-11-28 02:06:55,294 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:06:55,576 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_2938be22-e57e-4757-8ac9-f7da354e344b/sv-benchmarks/c/product-lines/email_spec3_product30.cil.c[5243,5256] [2024-11-28 02:06:55,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:06:56,006 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:06:56,015 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [48] [2024-11-28 02:06:56,017 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [208] [2024-11-28 02:06:56,017 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [217] [2024-11-28 02:06:56,017 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [619] [2024-11-28 02:06:56,017 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [985] [2024-11-28 02:06:56,018 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1288] [2024-11-28 02:06:56,018 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1504] [2024-11-28 02:06:56,018 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1539] [2024-11-28 02:06:56,019 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignVerify_spec.i","") [1903] [2024-11-28 02:06:56,019 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1961] [2024-11-28 02:06:56,020 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [3028] [2024-11-28 02:06:56,044 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_2938be22-e57e-4757-8ac9-f7da354e344b/sv-benchmarks/c/product-lines/email_spec3_product30.cil.c[5243,5256] [2024-11-28 02:06:56,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:06:56,220 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:06:56,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:56 WrapperNode [2024-11-28 02:06:56,221 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:06:56,221 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:06:56,221 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:06:56,222 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:06:56,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:56" (1/1) ... [2024-11-28 02:06:56,247 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:56" (1/1) ... [2024-11-28 02:06:56,302 INFO L138 Inliner]: procedures = 132, calls = 211, calls flagged for inlining = 60, calls inlined = 50, statements flattened = 942 [2024-11-28 02:06:56,302 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:06:56,303 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:06:56,303 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:06:56,303 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:06:56,316 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:56" (1/1) ... [2024-11-28 02:06:56,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:56" (1/1) ... [2024-11-28 02:06:56,327 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:56" (1/1) ... [2024-11-28 02:06:56,368 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]. [2024-11-28 02:06:56,368 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:56" (1/1) ... [2024-11-28 02:06:56,369 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:56" (1/1) ... [2024-11-28 02:06:56,399 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:56" (1/1) ... [2024-11-28 02:06:56,404 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:56" (1/1) ... [2024-11-28 02:06:56,419 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:56" (1/1) ... [2024-11-28 02:06:56,430 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:56" (1/1) ... [2024-11-28 02:06:56,436 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:56" (1/1) ... [2024-11-28 02:06:56,445 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:06:56,446 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:06:56,446 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:06:56,450 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:06:56,451 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:56" (1/1) ... [2024-11-28 02:06:56,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:06:56,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:06:56,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:06:56,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:06:56,538 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-11-28 02:06:56,538 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-11-28 02:06:56,539 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-11-28 02:06:56,539 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-11-28 02:06:56,539 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-11-28 02:06:56,539 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-11-28 02:06:56,539 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-28 02:06:56,540 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-28 02:06:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-28 02:06:56,540 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-28 02:06:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-11-28 02:06:56,541 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-11-28 02:06:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-28 02:06:56,541 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-28 02:06:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-11-28 02:06:56,544 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-11-28 02:06:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-11-28 02:06:56,545 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-11-28 02:06:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-28 02:06:56,545 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-28 02:06:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-11-28 02:06:56,545 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-11-28 02:06:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-28 02:06:56,545 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-28 02:06:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:06:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-11-28 02:06:56,546 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-11-28 02:06:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-11-28 02:06:56,546 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-11-28 02:06:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-28 02:06:56,546 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-28 02:06:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-28 02:06:56,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-28 02:06:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-28 02:06:56,546 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-28 02:06:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-28 02:06:56,546 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-28 02:06:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-11-28 02:06:56,546 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-11-28 02:06:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-28 02:06:56,546 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-28 02:06:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-11-28 02:06:56,546 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-11-28 02:06:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-28 02:06:56,547 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-28 02:06:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-11-28 02:06:56,547 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-11-28 02:06:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:06:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:06:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:06:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:06:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-28 02:06:56,547 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-28 02:06:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:06:56,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:06:56,834 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:06:56,837 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:06:58,018 INFO L? ?]: Removed 436 outVars from TransFormulas that were not future-live. [2024-11-28 02:06:58,018 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:06:58,049 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:06:58,049 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:06:58,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:06:58 BoogieIcfgContainer [2024-11-28 02:06:58,050 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:06:58,056 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:06:58,057 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:06:58,062 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:06:58,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:06:55" (1/3) ... [2024-11-28 02:06:58,063 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f887656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:06:58, skipping insertion in model container [2024-11-28 02:06:58,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:56" (2/3) ... [2024-11-28 02:06:58,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f887656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:06:58, skipping insertion in model container [2024-11-28 02:06:58,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:06:58" (3/3) ... [2024-11-28 02:06:58,066 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec3_product30.cil.c [2024-11-28 02:06:58,081 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:06:58,083 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec3_product30.cil.c that has 25 procedures, 357 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:06:58,208 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:06:58,223 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;@6d3c0baf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:06:58,223 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:06:58,232 INFO L276 IsEmpty]: Start isEmpty. Operand has 357 states, 273 states have (on average 1.5128205128205128) internal successors, (413), 279 states have internal predecessors, (413), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-28 02:06:58,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-28 02:06:58,256 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:58,257 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] [2024-11-28 02:06:58,257 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:06:58,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:58,262 INFO L85 PathProgramCache]: Analyzing trace with hash -2024609617, now seen corresponding path program 1 times [2024-11-28 02:06:58,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:58,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004164947] [2024-11-28 02:06:58,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:58,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:59,391 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 02:06:59,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:59,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004164947] [2024-11-28 02:06:59,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004164947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:06:59,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702011291] [2024-11-28 02:06:59,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:59,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:59,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:06:59,400 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:06:59,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:06:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:59,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:06:59,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:06:59,930 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-28 02:06:59,930 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:06:59,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702011291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:59,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:06:59,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 02:06:59,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520240666] [2024-11-28 02:06:59,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:59,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:06:59,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:59,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:06:59,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:06:59,963 INFO L87 Difference]: Start difference. First operand has 357 states, 273 states have (on average 1.5128205128205128) internal successors, (413), 279 states have internal predecessors, (413), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:07:00,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:00,062 INFO L93 Difference]: Finished difference Result 562 states and 818 transitions. [2024-11-28 02:07:00,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:00,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2024-11-28 02:07:00,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:00,077 INFO L225 Difference]: With dead ends: 562 [2024-11-28 02:07:00,077 INFO L226 Difference]: Without dead ends: 351 [2024-11-28 02:07:00,082 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:07:00,085 INFO L435 NwaCegarLoop]: 521 mSDtfsCounter, 1 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1039 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 [2024-11-28 02:07:00,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1039 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:00,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-11-28 02:07:00,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 350. [2024-11-28 02:07:00,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 268 states have (on average 1.5037313432835822) internal successors, (403), 272 states have internal predecessors, (403), 58 states have call successors, (58), 24 states have call predecessors, (58), 23 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2024-11-28 02:07:00,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 516 transitions. [2024-11-28 02:07:00,160 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 516 transitions. Word has length 130 [2024-11-28 02:07:00,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:00,161 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 516 transitions. [2024-11-28 02:07:00,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:07:00,162 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 516 transitions. [2024-11-28 02:07:00,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-28 02:07:00,172 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:00,173 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, 1, 1, 1, 1, 1] [2024-11-28 02:07:00,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:07:00,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 02:07:00,374 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:00,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:00,375 INFO L85 PathProgramCache]: Analyzing trace with hash 648050626, now seen corresponding path program 1 times [2024-11-28 02:07:00,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:00,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495243122] [2024-11-28 02:07:00,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:00,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:00,887 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 02:07:00,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:00,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495243122] [2024-11-28 02:07:00,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495243122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:00,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138456723] [2024-11-28 02:07:00,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:00,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:00,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:00,893 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:00,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:07:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:01,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:07:01,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:01,458 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-28 02:07:01,458 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:01,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138456723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:01,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:07:01,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 02:07:01,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20327075] [2024-11-28 02:07:01,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:01,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:01,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:01,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:01,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:07:01,464 INFO L87 Difference]: Start difference. First operand 350 states and 516 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:07:01,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:01,543 INFO L93 Difference]: Finished difference Result 730 states and 1091 transitions. [2024-11-28 02:07:01,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:01,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 138 [2024-11-28 02:07:01,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:01,550 INFO L225 Difference]: With dead ends: 730 [2024-11-28 02:07:01,551 INFO L226 Difference]: Without dead ends: 406 [2024-11-28 02:07:01,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:07:01,554 INFO L435 NwaCegarLoop]: 527 mSDtfsCounter, 107 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 995 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 [2024-11-28 02:07:01,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 995 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:01,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-11-28 02:07:01,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 398. [2024-11-28 02:07:01,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 305 states have (on average 1.521311475409836) internal successors, (464), 309 states have internal predecessors, (464), 69 states have call successors, (69), 24 states have call predecessors, (69), 23 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-28 02:07:01,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 599 transitions. [2024-11-28 02:07:01,600 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 599 transitions. Word has length 138 [2024-11-28 02:07:01,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:01,602 INFO L471 AbstractCegarLoop]: Abstraction has 398 states and 599 transitions. [2024-11-28 02:07:01,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:07:01,604 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 599 transitions. [2024-11-28 02:07:01,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-28 02:07:01,607 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:01,608 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, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:01,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:01,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:01,808 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:01,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:01,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1676676951, now seen corresponding path program 1 times [2024-11-28 02:07:01,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:01,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221043334] [2024-11-28 02:07:01,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:01,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:02,165 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 02:07:02,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:02,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221043334] [2024-11-28 02:07:02,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221043334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:02,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691257294] [2024-11-28 02:07:02,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:02,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:02,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:02,170 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:02,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:07:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:02,566 INFO L256 TraceCheckSpWp]: Trace formula consists of 1185 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:07:02,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:02,649 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 02:07:02,649 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:02,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691257294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:02,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:07:02,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-28 02:07:02,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810368694] [2024-11-28 02:07:02,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:02,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:07:02,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:02,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:07:02,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:07:02,652 INFO L87 Difference]: Start difference. First operand 398 states and 599 transitions. Second operand has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 02:07:02,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:02,735 INFO L93 Difference]: Finished difference Result 787 states and 1188 transitions. [2024-11-28 02:07:02,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:07:02,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 139 [2024-11-28 02:07:02,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:02,742 INFO L225 Difference]: With dead ends: 787 [2024-11-28 02:07:02,742 INFO L226 Difference]: Without dead ends: 400 [2024-11-28 02:07:02,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:07:02,745 INFO L435 NwaCegarLoop]: 507 mSDtfsCounter, 2 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:02,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2017 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:02,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-11-28 02:07:02,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2024-11-28 02:07:02,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 306 states have (on average 1.5196078431372548) internal successors, (465), 311 states have internal predecessors, (465), 69 states have call successors, (69), 24 states have call predecessors, (69), 24 states have return successors, (68), 66 states have call predecessors, (68), 66 states have call successors, (68) [2024-11-28 02:07:02,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 602 transitions. [2024-11-28 02:07:02,793 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 602 transitions. Word has length 139 [2024-11-28 02:07:02,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:02,793 INFO L471 AbstractCegarLoop]: Abstraction has 400 states and 602 transitions. [2024-11-28 02:07:02,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 02:07:02,794 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 602 transitions. [2024-11-28 02:07:02,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 02:07:02,798 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:02,798 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] [2024-11-28 02:07:02,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:03,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:03,002 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:03,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:03,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1014017395, now seen corresponding path program 1 times [2024-11-28 02:07:03,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:03,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946829556] [2024-11-28 02:07:03,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:03,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:03,312 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 02:07:03,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:03,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946829556] [2024-11-28 02:07:03,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946829556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:03,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209247736] [2024-11-28 02:07:03,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:03,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:03,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:03,318 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:03,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:07:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:03,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 1186 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:07:03,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 02:07:03,847 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:03,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209247736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:03,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:07:03,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-28 02:07:03,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119042653] [2024-11-28 02:07:03,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:03,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:07:03,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:03,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:07:03,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:07:03,849 INFO L87 Difference]: Start difference. First operand 400 states and 602 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 02:07:03,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:03,945 INFO L93 Difference]: Finished difference Result 789 states and 1193 transitions. [2024-11-28 02:07:03,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:07:03,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 140 [2024-11-28 02:07:03,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:03,949 INFO L225 Difference]: With dead ends: 789 [2024-11-28 02:07:03,949 INFO L226 Difference]: Without dead ends: 402 [2024-11-28 02:07:03,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:07:03,954 INFO L435 NwaCegarLoop]: 505 mSDtfsCounter, 2 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2003 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 [2024-11-28 02:07:03,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2003 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:07:03,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-11-28 02:07:03,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2024-11-28 02:07:03,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 307 states have (on average 1.517915309446254) internal successors, (466), 313 states have internal predecessors, (466), 69 states have call successors, (69), 24 states have call predecessors, (69), 25 states have return successors, (73), 66 states have call predecessors, (73), 66 states have call successors, (73) [2024-11-28 02:07:03,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 608 transitions. [2024-11-28 02:07:03,986 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 608 transitions. Word has length 140 [2024-11-28 02:07:03,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:03,987 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 608 transitions. [2024-11-28 02:07:03,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 02:07:03,987 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 608 transitions. [2024-11-28 02:07:03,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 02:07:03,990 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:03,990 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, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:04,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:07:04,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:04,191 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:04,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:04,192 INFO L85 PathProgramCache]: Analyzing trace with hash 305243757, now seen corresponding path program 1 times [2024-11-28 02:07:04,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:04,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211457605] [2024-11-28 02:07:04,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:04,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:04,435 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 02:07:04,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:04,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211457605] [2024-11-28 02:07:04,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211457605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:04,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:04,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:07:04,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13041873] [2024-11-28 02:07:04,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:04,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:07:04,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:04,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:07:04,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:07:04,438 INFO L87 Difference]: Start difference. First operand 402 states and 608 transitions. Second operand has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 02:07:04,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:04,508 INFO L93 Difference]: Finished difference Result 781 states and 1184 transitions. [2024-11-28 02:07:04,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:07:04,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 141 [2024-11-28 02:07:04,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:04,512 INFO L225 Difference]: With dead ends: 781 [2024-11-28 02:07:04,512 INFO L226 Difference]: Without dead ends: 402 [2024-11-28 02:07:04,514 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 [2024-11-28 02:07:04,514 INFO L435 NwaCegarLoop]: 508 mSDtfsCounter, 2 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2021 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 [2024-11-28 02:07:04,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2021 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:04,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-11-28 02:07:04,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2024-11-28 02:07:04,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 307 states have (on average 1.517915309446254) internal successors, (466), 313 states have internal predecessors, (466), 69 states have call successors, (69), 24 states have call predecessors, (69), 25 states have return successors, (72), 66 states have call predecessors, (72), 66 states have call successors, (72) [2024-11-28 02:07:04,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 607 transitions. [2024-11-28 02:07:04,539 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 607 transitions. Word has length 141 [2024-11-28 02:07:04,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:04,539 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 607 transitions. [2024-11-28 02:07:04,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 02:07:04,540 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 607 transitions. [2024-11-28 02:07:04,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-28 02:07:04,543 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:04,543 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, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:04,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:07:04,543 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:04,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:04,544 INFO L85 PathProgramCache]: Analyzing trace with hash 239235943, now seen corresponding path program 2 times [2024-11-28 02:07:04,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:04,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73284689] [2024-11-28 02:07:04,544 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:07:04,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:04,588 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:07:04,588 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:04,841 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 02:07:04,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:04,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73284689] [2024-11-28 02:07:04,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73284689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:04,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:04,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:07:04,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548438411] [2024-11-28 02:07:04,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:04,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:07:04,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:04,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:07:04,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:07:04,843 INFO L87 Difference]: Start difference. First operand 402 states and 607 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 02:07:05,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:05,589 INFO L93 Difference]: Finished difference Result 929 states and 1411 transitions. [2024-11-28 02:07:05,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:07:05,590 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 142 [2024-11-28 02:07:05,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:05,597 INFO L225 Difference]: With dead ends: 929 [2024-11-28 02:07:05,597 INFO L226 Difference]: Without dead ends: 738 [2024-11-28 02:07:05,598 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 [2024-11-28 02:07:05,599 INFO L435 NwaCegarLoop]: 524 mSDtfsCounter, 1017 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:05,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 2827 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:07:05,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2024-11-28 02:07:05,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 679. [2024-11-28 02:07:05,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 525 states have (on average 1.5542857142857143) internal successors, (816), 532 states have internal predecessors, (816), 112 states have call successors, (112), 41 states have call predecessors, (112), 41 states have return successors, (125), 108 states have call predecessors, (125), 109 states have call successors, (125) [2024-11-28 02:07:05,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1053 transitions. [2024-11-28 02:07:05,647 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1053 transitions. Word has length 142 [2024-11-28 02:07:05,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:05,648 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 1053 transitions. [2024-11-28 02:07:05,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 02:07:05,648 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1053 transitions. [2024-11-28 02:07:05,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-28 02:07:05,652 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:05,652 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:05,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:07:05,653 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:05,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:05,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1074923263, now seen corresponding path program 1 times [2024-11-28 02:07:05,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:05,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439285095] [2024-11-28 02:07:05,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:05,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 02:07:05,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:05,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439285095] [2024-11-28 02:07:05,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439285095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:05,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:05,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:07:05,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099360931] [2024-11-28 02:07:05,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:05,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:07:05,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:05,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:07:05,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:07:05,927 INFO L87 Difference]: Start difference. First operand 679 states and 1053 transitions. Second operand has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 02:07:06,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:06,020 INFO L93 Difference]: Finished difference Result 1327 states and 2066 transitions. [2024-11-28 02:07:06,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:07:06,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 143 [2024-11-28 02:07:06,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:06,026 INFO L225 Difference]: With dead ends: 1327 [2024-11-28 02:07:06,027 INFO L226 Difference]: Without dead ends: 683 [2024-11-28 02:07:06,029 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 [2024-11-28 02:07:06,030 INFO L435 NwaCegarLoop]: 509 mSDtfsCounter, 1 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2024 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:06,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2024 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:06,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2024-11-28 02:07:06,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2024-11-28 02:07:06,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 527 states have (on average 1.5521821631878558) internal successors, (818), 536 states have internal predecessors, (818), 112 states have call successors, (112), 41 states have call predecessors, (112), 43 states have return successors, (128), 108 states have call predecessors, (128), 109 states have call successors, (128) [2024-11-28 02:07:06,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1058 transitions. [2024-11-28 02:07:06,098 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1058 transitions. Word has length 143 [2024-11-28 02:07:06,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:06,099 INFO L471 AbstractCegarLoop]: Abstraction has 683 states and 1058 transitions. [2024-11-28 02:07:06,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 02:07:06,099 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1058 transitions. [2024-11-28 02:07:06,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-28 02:07:06,104 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:06,105 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:06,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:07:06,106 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:06,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:06,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1977338408, now seen corresponding path program 1 times [2024-11-28 02:07:06,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:06,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643659111] [2024-11-28 02:07:06,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:06,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:06,321 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-28 02:07:06,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:06,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643659111] [2024-11-28 02:07:06,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643659111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:06,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374139321] [2024-11-28 02:07:06,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:06,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:06,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:06,325 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:06,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:07:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:06,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:07:06,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:06,893 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 02:07:06,894 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:06,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374139321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:06,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:07:06,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-28 02:07:06,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865322787] [2024-11-28 02:07:06,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:06,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:07:06,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:06,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:07:06,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:07:06,897 INFO L87 Difference]: Start difference. First operand 683 states and 1058 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:07:07,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:07,024 INFO L93 Difference]: Finished difference Result 1347 states and 2094 transitions. [2024-11-28 02:07:07,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:07:07,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2024-11-28 02:07:07,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:07,031 INFO L225 Difference]: With dead ends: 1347 [2024-11-28 02:07:07,031 INFO L226 Difference]: Without dead ends: 689 [2024-11-28 02:07:07,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:07:07,035 INFO L435 NwaCegarLoop]: 509 mSDtfsCounter, 1 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2018 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 [2024-11-28 02:07:07,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2018 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:07:07,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-11-28 02:07:07,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 685. [2024-11-28 02:07:07,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 528 states have (on average 1.5511363636363635) internal successors, (819), 538 states have internal predecessors, (819), 112 states have call successors, (112), 41 states have call predecessors, (112), 44 states have return successors, (131), 108 states have call predecessors, (131), 109 states have call successors, (131) [2024-11-28 02:07:07,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1062 transitions. [2024-11-28 02:07:07,091 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1062 transitions. Word has length 146 [2024-11-28 02:07:07,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:07,092 INFO L471 AbstractCegarLoop]: Abstraction has 685 states and 1062 transitions. [2024-11-28 02:07:07,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:07:07,093 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1062 transitions. [2024-11-28 02:07:07,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-28 02:07:07,097 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:07,097 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:07,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:07,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 02:07:07,298 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:07,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:07,298 INFO L85 PathProgramCache]: Analyzing trace with hash -649367994, now seen corresponding path program 1 times [2024-11-28 02:07:07,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:07,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633204444] [2024-11-28 02:07:07,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:07,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:07,609 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-28 02:07:07,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:07,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633204444] [2024-11-28 02:07:07,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633204444] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:07,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915098220] [2024-11-28 02:07:07,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:07,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:07,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:07,613 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:07,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:07:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:08,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:07:08,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:08,134 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 02:07:08,134 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:08,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915098220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:08,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:07:08,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-28 02:07:08,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580275161] [2024-11-28 02:07:08,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:08,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:08,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:08,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:08,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:07:08,137 INFO L87 Difference]: Start difference. First operand 685 states and 1062 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 02:07:08,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:08,204 INFO L93 Difference]: Finished difference Result 1553 states and 2468 transitions. [2024-11-28 02:07:08,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:08,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 148 [2024-11-28 02:07:08,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:08,214 INFO L225 Difference]: With dead ends: 1553 [2024-11-28 02:07:08,215 INFO L226 Difference]: Without dead ends: 917 [2024-11-28 02:07:08,218 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:07:08,220 INFO L435 NwaCegarLoop]: 538 mSDtfsCounter, 105 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1046 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 [2024-11-28 02:07:08,220 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1046 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:08,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2024-11-28 02:07:08,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 907. [2024-11-28 02:07:08,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 700 states have (on average 1.5814285714285714) internal successors, (1107), 710 states have internal predecessors, (1107), 162 states have call successors, (162), 41 states have call predecessors, (162), 44 states have return successors, (189), 158 states have call predecessors, (189), 159 states have call successors, (189) [2024-11-28 02:07:08,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1458 transitions. [2024-11-28 02:07:08,294 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1458 transitions. Word has length 148 [2024-11-28 02:07:08,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:08,295 INFO L471 AbstractCegarLoop]: Abstraction has 907 states and 1458 transitions. [2024-11-28 02:07:08,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 02:07:08,295 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1458 transitions. [2024-11-28 02:07:08,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 02:07:08,302 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:08,302 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] [2024-11-28 02:07:08,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:08,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:08,507 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:08,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:08,508 INFO L85 PathProgramCache]: Analyzing trace with hash -721869226, now seen corresponding path program 1 times [2024-11-28 02:07:08,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:08,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330792607] [2024-11-28 02:07:08,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:08,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:08,774 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 02:07:08,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:08,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330792607] [2024-11-28 02:07:08,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330792607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:08,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:08,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:07:08,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946682574] [2024-11-28 02:07:08,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:08,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:07:08,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:08,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:07:08,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:07:08,777 INFO L87 Difference]: Start difference. First operand 907 states and 1458 transitions. Second operand has 8 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 02:07:09,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:09,037 INFO L93 Difference]: Finished difference Result 1774 states and 2857 transitions. [2024-11-28 02:07:09,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:07:09,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 144 [2024-11-28 02:07:09,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:09,046 INFO L225 Difference]: With dead ends: 1774 [2024-11-28 02:07:09,047 INFO L226 Difference]: Without dead ends: 911 [2024-11-28 02:07:09,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:07:09,051 INFO L435 NwaCegarLoop]: 499 mSDtfsCounter, 7 mSDsluCounter, 2965 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3464 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:09,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3464 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:07:09,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2024-11-28 02:07:09,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 909. [2024-11-28 02:07:09,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 702 states have (on average 1.5797720797720798) internal successors, (1109), 711 states have internal predecessors, (1109), 162 states have call successors, (162), 42 states have call predecessors, (162), 44 states have return successors, (187), 158 states have call predecessors, (187), 159 states have call successors, (187) [2024-11-28 02:07:09,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1458 transitions. [2024-11-28 02:07:09,125 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1458 transitions. Word has length 144 [2024-11-28 02:07:09,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:09,126 INFO L471 AbstractCegarLoop]: Abstraction has 909 states and 1458 transitions. [2024-11-28 02:07:09,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 02:07:09,127 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1458 transitions. [2024-11-28 02:07:09,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-28 02:07:09,133 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:09,134 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:09,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:07:09,134 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:09,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:09,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1448843596, now seen corresponding path program 2 times [2024-11-28 02:07:09,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:09,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236736609] [2024-11-28 02:07:09,135 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:07:09,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:09,180 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:07:09,181 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:09,447 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-28 02:07:09,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:09,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236736609] [2024-11-28 02:07:09,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236736609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:09,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:09,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:07:09,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769610199] [2024-11-28 02:07:09,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:09,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:07:09,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:09,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:07:09,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:07:09,451 INFO L87 Difference]: Start difference. First operand 909 states and 1458 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:07:09,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:09,699 INFO L93 Difference]: Finished difference Result 1133 states and 1774 transitions. [2024-11-28 02:07:09,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:07:09,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 145 [2024-11-28 02:07:09,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:09,710 INFO L225 Difference]: With dead ends: 1133 [2024-11-28 02:07:09,710 INFO L226 Difference]: Without dead ends: 940 [2024-11-28 02:07:09,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:07:09,713 INFO L435 NwaCegarLoop]: 541 mSDtfsCounter, 26 mSDsluCounter, 3190 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3731 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:09,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3731 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:07:09,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2024-11-28 02:07:09,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 926. [2024-11-28 02:07:09,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 711 states have (on average 1.5766526019690577) internal successors, (1121), 723 states have internal predecessors, (1121), 169 states have call successors, (169), 42 states have call predecessors, (169), 45 states have return successors, (197), 164 states have call predecessors, (197), 166 states have call successors, (197) [2024-11-28 02:07:09,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1487 transitions. [2024-11-28 02:07:09,811 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1487 transitions. Word has length 145 [2024-11-28 02:07:09,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:09,812 INFO L471 AbstractCegarLoop]: Abstraction has 926 states and 1487 transitions. [2024-11-28 02:07:09,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:07:09,813 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1487 transitions. [2024-11-28 02:07:09,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-28 02:07:09,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:09,821 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:09,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:07:09,822 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:09,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:09,822 INFO L85 PathProgramCache]: Analyzing trace with hash 885323956, now seen corresponding path program 1 times [2024-11-28 02:07:09,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:09,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631360098] [2024-11-28 02:07:09,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:09,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:10,088 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 02:07:10,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:10,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631360098] [2024-11-28 02:07:10,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631360098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:10,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:10,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:07:10,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860989706] [2024-11-28 02:07:10,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:10,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:07:10,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:10,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:07:10,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:07:10,091 INFO L87 Difference]: Start difference. First operand 926 states and 1487 transitions. Second operand has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 02:07:10,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:10,350 INFO L93 Difference]: Finished difference Result 1821 states and 2937 transitions. [2024-11-28 02:07:10,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:07:10,350 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 146 [2024-11-28 02:07:10,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:10,358 INFO L225 Difference]: With dead ends: 1821 [2024-11-28 02:07:10,358 INFO L226 Difference]: Without dead ends: 936 [2024-11-28 02:07:10,362 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:07:10,362 INFO L435 NwaCegarLoop]: 501 mSDtfsCounter, 5 mSDsluCounter, 2977 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3478 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:10,363 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3478 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:07:10,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2024-11-28 02:07:10,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 934. [2024-11-28 02:07:10,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 717 states have (on average 1.5718270571827058) internal successors, (1127), 730 states have internal predecessors, (1127), 169 states have call successors, (169), 43 states have call predecessors, (169), 47 states have return successors, (205), 164 states have call predecessors, (205), 166 states have call successors, (205) [2024-11-28 02:07:10,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1501 transitions. [2024-11-28 02:07:10,435 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1501 transitions. Word has length 146 [2024-11-28 02:07:10,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:10,435 INFO L471 AbstractCegarLoop]: Abstraction has 934 states and 1501 transitions. [2024-11-28 02:07:10,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 02:07:10,435 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1501 transitions. [2024-11-28 02:07:10,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-28 02:07:10,442 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:10,443 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:10,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:07:10,444 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:10,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:10,445 INFO L85 PathProgramCache]: Analyzing trace with hash 562544350, now seen corresponding path program 1 times [2024-11-28 02:07:10,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:10,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960855809] [2024-11-28 02:07:10,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:10,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-28 02:07:10,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:10,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960855809] [2024-11-28 02:07:10,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960855809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:10,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593856944] [2024-11-28 02:07:10,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:10,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:10,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:10,624 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:10,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:07:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:11,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:07:11,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:11,116 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 02:07:11,116 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:11,264 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 02:07:11,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593856944] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:11,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:11,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-11-28 02:07:11,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492376597] [2024-11-28 02:07:11,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:11,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:07:11,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:11,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:07:11,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:07:11,268 INFO L87 Difference]: Start difference. First operand 934 states and 1501 transitions. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 3 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-28 02:07:11,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:11,599 INFO L93 Difference]: Finished difference Result 2350 states and 3870 transitions. [2024-11-28 02:07:11,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:07:11,600 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 3 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 149 [2024-11-28 02:07:11,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:11,613 INFO L225 Difference]: With dead ends: 2350 [2024-11-28 02:07:11,613 INFO L226 Difference]: Without dead ends: 1735 [2024-11-28 02:07:11,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:07:11,617 INFO L435 NwaCegarLoop]: 548 mSDtfsCounter, 314 mSDsluCounter, 3307 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 3855 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:11,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 3855 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:07:11,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2024-11-28 02:07:11,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1699. [2024-11-28 02:07:11,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1334 states have (on average 1.6131934032983508) internal successors, (2152), 1333 states have internal predecessors, (2152), 321 states have call successors, (321), 42 states have call predecessors, (321), 43 states have return successors, (384), 327 states have call predecessors, (384), 318 states have call successors, (384) [2024-11-28 02:07:11,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2857 transitions. [2024-11-28 02:07:11,739 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2857 transitions. Word has length 149 [2024-11-28 02:07:11,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:11,740 INFO L471 AbstractCegarLoop]: Abstraction has 1699 states and 2857 transitions. [2024-11-28 02:07:11,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 3 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-28 02:07:11,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2857 transitions. [2024-11-28 02:07:11,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-28 02:07:11,752 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:11,752 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:11,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:11,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 02:07:11,957 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:11,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:11,958 INFO L85 PathProgramCache]: Analyzing trace with hash -834368666, now seen corresponding path program 1 times [2024-11-28 02:07:11,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:11,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542777083] [2024-11-28 02:07:11,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:11,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:12,198 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-28 02:07:12,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:12,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542777083] [2024-11-28 02:07:12,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542777083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:12,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557600188] [2024-11-28 02:07:12,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:12,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:12,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:12,201 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:12,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:07:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:12,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 1235 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:07:12,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:12,669 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-28 02:07:12,669 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:12,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557600188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:12,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:07:12,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-28 02:07:12,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046776508] [2024-11-28 02:07:12,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:12,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:12,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:12,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:12,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:07:12,672 INFO L87 Difference]: Start difference. First operand 1699 states and 2857 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 02:07:12,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:12,774 INFO L93 Difference]: Finished difference Result 3990 states and 6790 transitions. [2024-11-28 02:07:12,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:12,775 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), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 166 [2024-11-28 02:07:12,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:12,793 INFO L225 Difference]: With dead ends: 3990 [2024-11-28 02:07:12,793 INFO L226 Difference]: Without dead ends: 2457 [2024-11-28 02:07:12,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:07:12,800 INFO L435 NwaCegarLoop]: 514 mSDtfsCounter, 99 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1019 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 [2024-11-28 02:07:12,801 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 1019 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:12,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2024-11-28 02:07:12,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 2447. [2024-11-28 02:07:12,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2447 states, 1954 states have (on average 1.6248720573183213) internal successors, (3175), 1944 states have internal predecessors, (3175), 449 states have call successors, (449), 42 states have call predecessors, (449), 43 states have return successors, (549), 464 states have call predecessors, (549), 446 states have call successors, (549) [2024-11-28 02:07:13,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 4173 transitions. [2024-11-28 02:07:13,011 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 4173 transitions. Word has length 166 [2024-11-28 02:07:13,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:13,011 INFO L471 AbstractCegarLoop]: Abstraction has 2447 states and 4173 transitions. [2024-11-28 02:07:13,011 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), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 02:07:13,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 4173 transitions. [2024-11-28 02:07:13,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-28 02:07:13,031 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:13,032 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:13,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:07:13,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 02:07:13,232 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:13,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:13,233 INFO L85 PathProgramCache]: Analyzing trace with hash -300533425, now seen corresponding path program 1 times [2024-11-28 02:07:13,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:13,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337494089] [2024-11-28 02:07:13,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:13,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:13,323 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 02:07:13,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:13,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337494089] [2024-11-28 02:07:13,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337494089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:13,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:13,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:13,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641496286] [2024-11-28 02:07:13,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:13,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:13,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:13,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:13,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:13,326 INFO L87 Difference]: Start difference. First operand 2447 states and 4173 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:07:13,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:13,488 INFO L93 Difference]: Finished difference Result 6262 states and 10754 transitions. [2024-11-28 02:07:13,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:13,489 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2024-11-28 02:07:13,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:13,516 INFO L225 Difference]: With dead ends: 6262 [2024-11-28 02:07:13,517 INFO L226 Difference]: Without dead ends: 3953 [2024-11-28 02:07:13,528 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 [2024-11-28 02:07:13,529 INFO L435 NwaCegarLoop]: 521 mSDtfsCounter, 103 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1030 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 [2024-11-28 02:07:13,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 1030 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:13,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3953 states. [2024-11-28 02:07:13,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3953 to 3943. [2024-11-28 02:07:13,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3943 states, 3172 states have (on average 1.6330390920554856) internal successors, (5180), 3162 states have internal predecessors, (5180), 727 states have call successors, (727), 42 states have call predecessors, (727), 43 states have return successors, (853), 742 states have call predecessors, (853), 724 states have call successors, (853) [2024-11-28 02:07:13,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3943 states to 3943 states and 6760 transitions. [2024-11-28 02:07:13,829 INFO L78 Accepts]: Start accepts. Automaton has 3943 states and 6760 transitions. Word has length 153 [2024-11-28 02:07:13,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:13,829 INFO L471 AbstractCegarLoop]: Abstraction has 3943 states and 6760 transitions. [2024-11-28 02:07:13,829 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:07:13,830 INFO L276 IsEmpty]: Start isEmpty. Operand 3943 states and 6760 transitions. [2024-11-28 02:07:13,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-28 02:07:13,858 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:13,858 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:13,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:07:13,859 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:13,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:13,859 INFO L85 PathProgramCache]: Analyzing trace with hash -828613649, now seen corresponding path program 1 times [2024-11-28 02:07:13,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:13,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300537039] [2024-11-28 02:07:13,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:13,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-28 02:07:14,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:14,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300537039] [2024-11-28 02:07:14,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300537039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:14,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469386777] [2024-11-28 02:07:14,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:14,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:14,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:14,143 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:14,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:07:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:14,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 1240 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:07:14,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:14,652 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-28 02:07:14,652 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:14,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469386777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:14,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:07:14,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-28 02:07:14,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935666464] [2024-11-28 02:07:14,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:14,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:14,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:14,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:14,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:07:14,654 INFO L87 Difference]: Start difference. First operand 3943 states and 6760 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 02:07:14,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:14,873 INFO L93 Difference]: Finished difference Result 9314 states and 16108 transitions. [2024-11-28 02:07:14,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:14,874 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), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 167 [2024-11-28 02:07:14,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:14,914 INFO L225 Difference]: With dead ends: 9314 [2024-11-28 02:07:14,914 INFO L226 Difference]: Without dead ends: 6027 [2024-11-28 02:07:14,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:07:14,930 INFO L435 NwaCegarLoop]: 514 mSDtfsCounter, 97 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1019 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 [2024-11-28 02:07:14,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1019 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:14,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6027 states. [2024-11-28 02:07:15,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6027 to 6017. [2024-11-28 02:07:15,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6017 states, 4926 states have (on average 1.6382460414129112) internal successors, (8070), 4904 states have internal predecessors, (8070), 1047 states have call successors, (1047), 42 states have call predecessors, (1047), 43 states have return successors, (1252), 1074 states have call predecessors, (1252), 1044 states have call successors, (1252) [2024-11-28 02:07:15,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6017 states to 6017 states and 10369 transitions. [2024-11-28 02:07:15,386 INFO L78 Accepts]: Start accepts. Automaton has 6017 states and 10369 transitions. Word has length 167 [2024-11-28 02:07:15,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:15,387 INFO L471 AbstractCegarLoop]: Abstraction has 6017 states and 10369 transitions. [2024-11-28 02:07:15,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 02:07:15,387 INFO L276 IsEmpty]: Start isEmpty. Operand 6017 states and 10369 transitions. [2024-11-28 02:07:15,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 02:07:15,432 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:15,432 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:15,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:15,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 02:07:15,636 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:15,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:15,637 INFO L85 PathProgramCache]: Analyzing trace with hash 579148948, now seen corresponding path program 1 times [2024-11-28 02:07:15,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:15,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402890502] [2024-11-28 02:07:15,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:15,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:15,756 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 02:07:15,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:15,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402890502] [2024-11-28 02:07:15,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402890502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:15,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:15,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:15,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583985793] [2024-11-28 02:07:15,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:15,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:15,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:15,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:15,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:15,759 INFO L87 Difference]: Start difference. First operand 6017 states and 10369 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:07:16,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:16,108 INFO L93 Difference]: Finished difference Result 14940 states and 25908 transitions. [2024-11-28 02:07:16,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:16,109 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2024-11-28 02:07:16,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:16,182 INFO L225 Difference]: With dead ends: 14940 [2024-11-28 02:07:16,182 INFO L226 Difference]: Without dead ends: 9883 [2024-11-28 02:07:16,204 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 [2024-11-28 02:07:16,204 INFO L435 NwaCegarLoop]: 523 mSDtfsCounter, 97 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1035 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 [2024-11-28 02:07:16,204 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 1035 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:16,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9883 states. [2024-11-28 02:07:16,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9883 to 9873. [2024-11-28 02:07:16,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9873 states, 8091 states have (on average 1.632431096279817) internal successors, (13208), 8054 states have internal predecessors, (13208), 1738 states have call successors, (1738), 42 states have call predecessors, (1738), 43 states have return successors, (2082), 1780 states have call predecessors, (2082), 1735 states have call successors, (2082) [2024-11-28 02:07:16,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9873 states to 9873 states and 17028 transitions. [2024-11-28 02:07:16,768 INFO L78 Accepts]: Start accepts. Automaton has 9873 states and 17028 transitions. Word has length 155 [2024-11-28 02:07:16,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:16,768 INFO L471 AbstractCegarLoop]: Abstraction has 9873 states and 17028 transitions. [2024-11-28 02:07:16,769 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:07:16,770 INFO L276 IsEmpty]: Start isEmpty. Operand 9873 states and 17028 transitions. [2024-11-28 02:07:16,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 02:07:16,818 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:16,819 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:16,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 02:07:16,819 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:16,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:16,819 INFO L85 PathProgramCache]: Analyzing trace with hash 988845057, now seen corresponding path program 1 times [2024-11-28 02:07:16,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:16,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776710225] [2024-11-28 02:07:16,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:16,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 02:07:16,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:16,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776710225] [2024-11-28 02:07:16,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776710225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:16,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:16,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:16,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363032644] [2024-11-28 02:07:16,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:16,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:16,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:16,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:16,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:16,895 INFO L87 Difference]: Start difference. First operand 9873 states and 17028 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:07:17,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:17,418 INFO L93 Difference]: Finished difference Result 25486 states and 44163 transitions. [2024-11-28 02:07:17,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:17,419 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 156 [2024-11-28 02:07:17,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:17,504 INFO L225 Difference]: With dead ends: 25486 [2024-11-28 02:07:17,504 INFO L226 Difference]: Without dead ends: 17061 [2024-11-28 02:07:17,539 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 [2024-11-28 02:07:17,539 INFO L435 NwaCegarLoop]: 514 mSDtfsCounter, 95 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1022 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 [2024-11-28 02:07:17,539 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 1022 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:17,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17061 states. [2024-11-28 02:07:18,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17061 to 17051. [2024-11-28 02:07:18,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17051 states, 14057 states have (on average 1.6310734865191718) internal successors, (22928), 14020 states have internal predecessors, (22928), 2950 states have call successors, (2950), 42 states have call predecessors, (2950), 43 states have return successors, (3483), 2992 states have call predecessors, (3483), 2947 states have call successors, (3483) [2024-11-28 02:07:18,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17051 states to 17051 states and 29361 transitions. [2024-11-28 02:07:18,600 INFO L78 Accepts]: Start accepts. Automaton has 17051 states and 29361 transitions. Word has length 156 [2024-11-28 02:07:18,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:18,600 INFO L471 AbstractCegarLoop]: Abstraction has 17051 states and 29361 transitions. [2024-11-28 02:07:18,600 INFO L472 AbstractCegarLoop]: INTERPOLANT 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:07:18,600 INFO L276 IsEmpty]: Start isEmpty. Operand 17051 states and 29361 transitions. [2024-11-28 02:07:18,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-28 02:07:18,774 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:18,775 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:18,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 02:07:18,775 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:18,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:18,776 INFO L85 PathProgramCache]: Analyzing trace with hash -283954968, now seen corresponding path program 1 times [2024-11-28 02:07:18,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:18,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895838303] [2024-11-28 02:07:18,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:18,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:19,105 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-28 02:07:19,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:19,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895838303] [2024-11-28 02:07:19,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895838303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:19,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909295433] [2024-11-28 02:07:19,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:19,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:19,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:19,109 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:19,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:07:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:19,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 1255 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:07:19,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:19,672 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-28 02:07:19,672 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:19,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909295433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:19,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:07:19,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-28 02:07:19,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663238955] [2024-11-28 02:07:19,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:19,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:19,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:19,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:19,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:07:19,675 INFO L87 Difference]: Start difference. First operand 17051 states and 29361 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 02:07:20,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:20,867 INFO L93 Difference]: Finished difference Result 45020 states and 77813 transitions. [2024-11-28 02:07:20,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:20,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 170 [2024-11-28 02:07:20,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:21,025 INFO L225 Difference]: With dead ends: 45020 [2024-11-28 02:07:21,025 INFO L226 Difference]: Without dead ends: 30245 [2024-11-28 02:07:21,072 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:07:21,073 INFO L435 NwaCegarLoop]: 528 mSDtfsCounter, 91 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1040 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 [2024-11-28 02:07:21,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1040 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:21,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30245 states. [2024-11-28 02:07:22,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30245 to 30235. [2024-11-28 02:07:22,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30235 states, 24910 states have (on average 1.6215174628663187) internal successors, (40392), 24855 states have internal predecessors, (40392), 5281 states have call successors, (5281), 42 states have call predecessors, (5281), 43 states have return successors, (6233), 5341 states have call predecessors, (6233), 5278 states have call successors, (6233) [2024-11-28 02:07:22,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30235 states to 30235 states and 51906 transitions. [2024-11-28 02:07:22,710 INFO L78 Accepts]: Start accepts. Automaton has 30235 states and 51906 transitions. Word has length 170 [2024-11-28 02:07:22,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:22,711 INFO L471 AbstractCegarLoop]: Abstraction has 30235 states and 51906 transitions. [2024-11-28 02:07:22,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 02:07:22,711 INFO L276 IsEmpty]: Start isEmpty. Operand 30235 states and 51906 transitions. [2024-11-28 02:07:22,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 02:07:22,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:22,821 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:22,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 02:07:23,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2938be22-e57e-4757-8ac9-f7da354e344b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:23,022 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:23,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:23,022 INFO L85 PathProgramCache]: Analyzing trace with hash 17311584, now seen corresponding path program 1 times [2024-11-28 02:07:23,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:23,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743094617] [2024-11-28 02:07:23,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:23,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:23,106 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 02:07:23,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:23,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743094617] [2024-11-28 02:07:23,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743094617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:23,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:23,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:23,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335899126] [2024-11-28 02:07:23,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:23,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:23,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:23,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:23,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:23,108 INFO L87 Difference]: Start difference. First operand 30235 states and 51906 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:07:25,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:25,123 INFO L93 Difference]: Finished difference Result 81643 states and 140747 transitions. [2024-11-28 02:07:25,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:25,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 158 [2024-11-28 02:07:25,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:25,470 INFO L225 Difference]: With dead ends: 81643 [2024-11-28 02:07:25,470 INFO L226 Difference]: Without dead ends: 54498 [2024-11-28 02:07:25,578 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 [2024-11-28 02:07:25,581 INFO L435 NwaCegarLoop]: 514 mSDtfsCounter, 91 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1022 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 [2024-11-28 02:07:25,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1022 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:25,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54498 states. [2024-11-28 02:07:28,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54498 to 54488. [2024-11-28 02:07:28,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54488 states, 45167 states have (on average 1.616888436247703) internal successors, (73030), 45091 states have internal predecessors, (73030), 9277 states have call successors, (9277), 42 states have call predecessors, (9277), 43 states have return successors, (11036), 9358 states have call predecessors, (11036), 9274 states have call successors, (11036) [2024-11-28 02:07:28,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54488 states to 54488 states and 93343 transitions. [2024-11-28 02:07:28,636 INFO L78 Accepts]: Start accepts. Automaton has 54488 states and 93343 transitions. Word has length 158 [2024-11-28 02:07:28,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:28,637 INFO L471 AbstractCegarLoop]: Abstraction has 54488 states and 93343 transitions. [2024-11-28 02:07:28,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:07:28,637 INFO L276 IsEmpty]: Start isEmpty. Operand 54488 states and 93343 transitions. [2024-11-28 02:07:28,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-28 02:07:28,771 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:28,771 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:28,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 02:07:28,771 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:28,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:28,772 INFO L85 PathProgramCache]: Analyzing trace with hash 2024242992, now seen corresponding path program 1 times [2024-11-28 02:07:28,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:28,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672300972] [2024-11-28 02:07:28,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:28,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:28,858 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 02:07:28,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:28,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672300972] [2024-11-28 02:07:28,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672300972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:28,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:28,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:28,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541638430] [2024-11-28 02:07:28,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:28,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:28,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:28,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:28,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:28,861 INFO L87 Difference]: Start difference. First operand 54488 states and 93343 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:07:32,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:32,008 INFO L93 Difference]: Finished difference Result 150938 states and 258868 transitions. [2024-11-28 02:07:32,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:32,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 159 [2024-11-28 02:07:32,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:32,744 INFO L225 Difference]: With dead ends: 150938 [2024-11-28 02:07:32,744 INFO L226 Difference]: Without dead ends: 101036 [2024-11-28 02:07:32,917 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 [2024-11-28 02:07:32,919 INFO L435 NwaCegarLoop]: 516 mSDtfsCounter, 89 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1024 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 [2024-11-28 02:07:32,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1024 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:32,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101036 states. [2024-11-28 02:07:37,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101036 to 101026. [2024-11-28 02:07:37,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101026 states, 84281 states have (on average 1.6105053333491535) internal successors, (135735), 84205 states have internal predecessors, (135735), 16701 states have call successors, (16701), 42 states have call predecessors, (16701), 43 states have return successors, (19524), 16782 states have call predecessors, (19524), 16698 states have call successors, (19524) [2024-11-28 02:07:37,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101026 states to 101026 states and 171960 transitions. [2024-11-28 02:07:37,650 INFO L78 Accepts]: Start accepts. Automaton has 101026 states and 171960 transitions. Word has length 159 [2024-11-28 02:07:37,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:37,650 INFO L471 AbstractCegarLoop]: Abstraction has 101026 states and 171960 transitions. [2024-11-28 02:07:37,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:07:37,650 INFO L276 IsEmpty]: Start isEmpty. Operand 101026 states and 171960 transitions. [2024-11-28 02:07:37,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 02:07:37,840 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:37,840 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:37,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 02:07:37,840 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:37,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:37,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1345591552, now seen corresponding path program 1 times [2024-11-28 02:07:37,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:37,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195324832] [2024-11-28 02:07:37,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:37,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:38,311 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 02:07:38,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:38,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195324832] [2024-11-28 02:07:38,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195324832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:38,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:38,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:38,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590239001] [2024-11-28 02:07:38,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:38,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:38,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:38,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:38,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:38,313 INFO L87 Difference]: Start difference. First operand 101026 states and 171960 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:07:42,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:42,358 INFO L93 Difference]: Finished difference Result 189431 states and 323083 transitions. [2024-11-28 02:07:42,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:42,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2024-11-28 02:07:42,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:43,696 INFO L225 Difference]: With dead ends: 189431 [2024-11-28 02:07:43,697 INFO L226 Difference]: Without dead ends: 189138 [2024-11-28 02:07:43,793 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 [2024-11-28 02:07:43,796 INFO L435 NwaCegarLoop]: 523 mSDtfsCounter, 84 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1036 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 [2024-11-28 02:07:43,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1036 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:43,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189138 states.