./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product31.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_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/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_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/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_17e4ca4a-785b-4f36-8ca2-b826dba19b50/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 2e77838346608929bef5ad1e655ea0710d74ebb9f10b29169ab985d305812d92 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:38:28,211 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:38:28,271 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:38:28,276 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:38:28,276 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:38:28,299 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:38:28,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:38:28,300 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:38:28,300 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:38:28,300 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:38:28,301 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:38:28,301 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:38:28,301 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:38:28,301 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:38:28,302 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:38:28,302 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:38:28,302 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:38:28,302 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:38:28,302 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:38:28,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:38:28,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:38:28,303 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:38:28,303 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:38:28,303 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:38:28,305 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:38:28,305 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:38:28,305 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:38:28,305 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:38:28,305 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:38:28,306 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:38:28,306 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:38:28,306 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:38:28,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:38:28,306 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:38:28,306 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:38:28,306 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:38:28,306 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:38:28,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:38:28,306 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:38:28,306 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:38:28,306 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:38:28,307 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:38:28,307 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:38:28,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:38:28,307 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:38:28,307 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:38:28,307 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:38:28,307 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:38:28,307 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_17e4ca4a-785b-4f36-8ca2-b826dba19b50/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 -> 2e77838346608929bef5ad1e655ea0710d74ebb9f10b29169ab985d305812d92 [2024-11-28 03:38:28,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:38:28,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:38:28,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:38:28,655 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:38:28,655 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:38:28,656 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c [2024-11-28 03:38:31,616 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/data/183c2531b/d39fb6722fe448f48fa829029c0951b5/FLAGf22cbcf44 [2024-11-28 03:38:32,065 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:38:32,065 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c [2024-11-28 03:38:32,092 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/data/183c2531b/d39fb6722fe448f48fa829029c0951b5/FLAGf22cbcf44 [2024-11-28 03:38:32,114 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/data/183c2531b/d39fb6722fe448f48fa829029c0951b5 [2024-11-28 03:38:32,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:38:32,119 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:38:32,121 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:38:32,122 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:38:32,127 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:38:32,128 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:38:32" (1/1) ... [2024-11-28 03:38:32,130 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2813acd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:32, skipping insertion in model container [2024-11-28 03:38:32,131 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:38:32" (1/1) ... [2024-11-28 03:38:32,217 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:38:32,424 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_17e4ca4a-785b-4f36-8ca2-b826dba19b50/sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c[1546,1559] [2024-11-28 03:38:32,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:38:32,982 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:38:32,992 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-11-28 03:38:32,993 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [57] [2024-11-28 03:38:32,994 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [423] [2024-11-28 03:38:32,995 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [517] [2024-11-28 03:38:32,995 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [638] [2024-11-28 03:38:32,995 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1306] [2024-11-28 03:38:32,995 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1664] [2024-11-28 03:38:32,997 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1679] [2024-11-28 03:38:32,997 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1714] [2024-11-28 03:38:32,997 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3329] [2024-11-28 03:38:33,000 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_17e4ca4a-785b-4f36-8ca2-b826dba19b50/sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c[1546,1559] [2024-11-28 03:38:33,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:38:33,154 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:38:33,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:33 WrapperNode [2024-11-28 03:38:33,155 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:38:33,156 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:38:33,156 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:38:33,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:38:33,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:33" (1/1) ... [2024-11-28 03:38:33,191 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:33" (1/1) ... [2024-11-28 03:38:33,262 INFO L138 Inliner]: procedures = 95, calls = 348, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 915 [2024-11-28 03:38:33,263 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:38:33,263 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:38:33,264 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:38:33,264 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:38:33,280 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:33" (1/1) ... [2024-11-28 03:38:33,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:33" (1/1) ... [2024-11-28 03:38:33,292 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:33" (1/1) ... [2024-11-28 03:38:33,339 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-28 03:38:33,342 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:33" (1/1) ... [2024-11-28 03:38:33,342 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:33" (1/1) ... [2024-11-28 03:38:33,375 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:33" (1/1) ... [2024-11-28 03:38:33,377 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:33" (1/1) ... [2024-11-28 03:38:33,391 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:33" (1/1) ... [2024-11-28 03:38:33,396 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:33" (1/1) ... [2024-11-28 03:38:33,420 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:33" (1/1) ... [2024-11-28 03:38:33,428 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:38:33,429 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:38:33,429 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:38:33,429 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:38:33,430 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:33" (1/1) ... [2024-11-28 03:38:33,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:38:33,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:33,472 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:38:33,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:38:33,511 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-28 03:38:33,511 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-28 03:38:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:38:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-28 03:38:33,512 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-28 03:38:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-28 03:38:33,512 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-28 03:38:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-28 03:38:33,512 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-28 03:38:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2024-11-28 03:38:33,512 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2024-11-28 03:38:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-28 03:38:33,512 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-28 03:38:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-28 03:38:33,513 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-28 03:38:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-28 03:38:33,513 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-28 03:38:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-28 03:38:33,513 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-28 03:38:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-28 03:38:33,513 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-28 03:38:33,514 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-11-28 03:38:33,514 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-11-28 03:38:33,514 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-28 03:38:33,514 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-28 03:38:33,514 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-28 03:38:33,514 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-28 03:38:33,514 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-28 03:38:33,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-28 03:38:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-28 03:38:33,515 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-28 03:38:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-28 03:38:33,515 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-28 03:38:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-28 03:38:33,515 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-28 03:38:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-28 03:38:33,515 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-28 03:38:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-28 03:38:33,515 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-28 03:38:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-28 03:38:33,515 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-28 03:38:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-28 03:38:33,515 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-28 03:38:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-28 03:38:33,515 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-28 03:38:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-28 03:38:33,516 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-28 03:38:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:38:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:38:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:38:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 03:38:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 03:38:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 03:38:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 03:38:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 03:38:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 03:38:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 03:38:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-28 03:38:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-28 03:38:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-28 03:38:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-28 03:38:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-28 03:38:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-28 03:38:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-28 03:38:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-28 03:38:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-28 03:38:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-28 03:38:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-28 03:38:33,517 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-28 03:38:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-28 03:38:33,517 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-28 03:38:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-28 03:38:33,517 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-28 03:38:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-28 03:38:33,517 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-28 03:38:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:38:33,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:38:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-28 03:38:33,517 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-28 03:38:33,774 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:38:33,777 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:38:35,483 INFO L? ?]: Removed 494 outVars from TransFormulas that were not future-live. [2024-11-28 03:38:35,483 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:38:35,507 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:38:35,507 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-28 03:38:35,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:38:35 BoogieIcfgContainer [2024-11-28 03:38:35,508 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:38:35,510 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:38:35,510 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:38:35,514 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:38:35,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:38:32" (1/3) ... [2024-11-28 03:38:35,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7266dda2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:38:35, skipping insertion in model container [2024-11-28 03:38:35,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:33" (2/3) ... [2024-11-28 03:38:35,516 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7266dda2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:38:35, skipping insertion in model container [2024-11-28 03:38:35,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:38:35" (3/3) ... [2024-11-28 03:38:35,517 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product31.cil.c [2024-11-28 03:38:35,532 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:38:35,535 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec13_product31.cil.c that has 29 procedures, 625 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-28 03:38:35,632 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:38:35,646 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;@7a444bc4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:38:35,646 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:38:35,652 INFO L276 IsEmpty]: Start isEmpty. Operand has 625 states, 487 states have (on average 1.6817248459958931) internal successors, (819), 505 states have internal predecessors, (819), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) [2024-11-28 03:38:35,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-28 03:38:35,690 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:35,691 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:38:35,691 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:35,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:35,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1539943334, now seen corresponding path program 1 times [2024-11-28 03:38:35,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:35,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290924851] [2024-11-28 03:38:35,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:35,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:36,675 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 03:38:36,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:36,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290924851] [2024-11-28 03:38:36,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290924851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:36,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112502413] [2024-11-28 03:38:36,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:36,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:36,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:36,684 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:36,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:38:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:37,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:38:37,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:37,290 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 03:38:37,290 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:37,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112502413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:37,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:37,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:38:37,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158252357] [2024-11-28 03:38:37,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:37,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:38:37,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:37,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:38:37,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:38:37,326 INFO L87 Difference]: Start difference. First operand has 625 states, 487 states have (on average 1.6817248459958931) internal successors, (819), 505 states have internal predecessors, (819), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 03:38:37,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:37,616 INFO L93 Difference]: Finished difference Result 1249 states and 2086 transitions. [2024-11-28 03:38:37,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:38:37,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2024-11-28 03:38:37,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:37,635 INFO L225 Difference]: With dead ends: 1249 [2024-11-28 03:38:37,635 INFO L226 Difference]: Without dead ends: 624 [2024-11-28 03:38:37,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:38:37,649 INFO L435 NwaCegarLoop]: 1010 mSDtfsCounter, 17 mSDsluCounter, 2012 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:37,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 3022 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:38:37,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2024-11-28 03:38:37,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 624. [2024-11-28 03:38:37,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 488 states have (on average 1.665983606557377) internal successors, (813), 504 states have internal predecessors, (813), 108 states have call successors, (108), 29 states have call predecessors, (108), 27 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-28 03:38:37,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 1026 transitions. [2024-11-28 03:38:37,782 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 1026 transitions. Word has length 131 [2024-11-28 03:38:37,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:37,782 INFO L471 AbstractCegarLoop]: Abstraction has 624 states and 1026 transitions. [2024-11-28 03:38:37,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 03:38:37,783 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 1026 transitions. [2024-11-28 03:38:37,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-28 03:38:37,800 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:37,800 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:38:37,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:38:38,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:38,001 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:38,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:38,002 INFO L85 PathProgramCache]: Analyzing trace with hash -890254002, now seen corresponding path program 1 times [2024-11-28 03:38:38,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:38,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225858494] [2024-11-28 03:38:38,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:38,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:38,551 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 03:38:38,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:38,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225858494] [2024-11-28 03:38:38,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225858494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:38,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861685628] [2024-11-28 03:38:38,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:38,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:38,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:38,558 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:38,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:38:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:39,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:38:39,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:39,133 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 03:38:39,134 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:39,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861685628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:39,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:39,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-28 03:38:39,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272068578] [2024-11-28 03:38:39,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:39,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:38:39,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:39,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:38:39,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:38:39,139 INFO L87 Difference]: Start difference. First operand 624 states and 1026 transitions. Second operand has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:38:39,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:39,342 INFO L93 Difference]: Finished difference Result 1254 states and 2066 transitions. [2024-11-28 03:38:39,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:38:39,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 133 [2024-11-28 03:38:39,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:39,351 INFO L225 Difference]: With dead ends: 1254 [2024-11-28 03:38:39,353 INFO L226 Difference]: Without dead ends: 640 [2024-11-28 03:38:39,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:38:39,359 INFO L435 NwaCegarLoop]: 999 mSDtfsCounter, 90 mSDsluCounter, 4903 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5902 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:39,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5902 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:38:39,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-11-28 03:38:39,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 637. [2024-11-28 03:38:39,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 498 states have (on average 1.6626506024096386) internal successors, (828), 516 states have internal predecessors, (828), 109 states have call successors, (109), 29 states have call predecessors, (109), 29 states have return successors, (111), 104 states have call predecessors, (111), 106 states have call successors, (111) [2024-11-28 03:38:39,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1048 transitions. [2024-11-28 03:38:39,434 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1048 transitions. Word has length 133 [2024-11-28 03:38:39,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:39,435 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 1048 transitions. [2024-11-28 03:38:39,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:38:39,435 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1048 transitions. [2024-11-28 03:38:39,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-28 03:38:39,442 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:39,442 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:38:39,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:38:39,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-28 03:38:39,647 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:39,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:39,647 INFO L85 PathProgramCache]: Analyzing trace with hash -393674420, now seen corresponding path program 1 times [2024-11-28 03:38:39,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:39,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277764740] [2024-11-28 03:38:39,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:39,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:40,025 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 03:38:40,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:40,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277764740] [2024-11-28 03:38:40,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277764740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:40,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536382954] [2024-11-28 03:38:40,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:40,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:40,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:40,029 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:40,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:38:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:40,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:38:40,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:40,512 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 03:38:40,512 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:40,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536382954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:40,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:40,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-28 03:38:40,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733705930] [2024-11-28 03:38:40,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:40,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:38:40,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:40,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:38:40,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:38:40,514 INFO L87 Difference]: Start difference. First operand 637 states and 1048 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:38:40,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:40,694 INFO L93 Difference]: Finished difference Result 1274 states and 2099 transitions. [2024-11-28 03:38:40,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:38:40,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 134 [2024-11-28 03:38:40,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:40,701 INFO L225 Difference]: With dead ends: 1274 [2024-11-28 03:38:40,701 INFO L226 Difference]: Without dead ends: 649 [2024-11-28 03:38:40,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:38:40,706 INFO L435 NwaCegarLoop]: 999 mSDtfsCounter, 101 mSDsluCounter, 4891 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 5890 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:40,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 5890 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:38:40,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2024-11-28 03:38:40,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 637. [2024-11-28 03:38:40,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 498 states have (on average 1.6626506024096386) internal successors, (828), 516 states have internal predecessors, (828), 109 states have call successors, (109), 29 states have call predecessors, (109), 29 states have return successors, (111), 104 states have call predecessors, (111), 106 states have call successors, (111) [2024-11-28 03:38:40,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1048 transitions. [2024-11-28 03:38:40,745 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1048 transitions. Word has length 134 [2024-11-28 03:38:40,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:40,746 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 1048 transitions. [2024-11-28 03:38:40,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:38:40,746 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1048 transitions. [2024-11-28 03:38:40,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-28 03:38:40,752 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:40,752 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:38:40,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:38:40,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-28 03:38:40,953 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:40,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:40,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1477525374, now seen corresponding path program 1 times [2024-11-28 03:38:40,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:40,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101525503] [2024-11-28 03:38:40,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:40,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:41,131 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 03:38:41,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:41,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101525503] [2024-11-28 03:38:41,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101525503] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:41,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029255516] [2024-11-28 03:38:41,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:41,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:41,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:41,134 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:41,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:38:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:41,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:38:41,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 03:38:41,535 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:41,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029255516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:41,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:41,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 03:38:41,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007525900] [2024-11-28 03:38:41,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:41,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:38:41,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:41,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:38:41,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:38:41,537 INFO L87 Difference]: Start difference. First operand 637 states and 1048 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 03:38:41,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:41,669 INFO L93 Difference]: Finished difference Result 1277 states and 2102 transitions. [2024-11-28 03:38:41,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:38:41,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2024-11-28 03:38:41,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:41,675 INFO L225 Difference]: With dead ends: 1277 [2024-11-28 03:38:41,675 INFO L226 Difference]: Without dead ends: 648 [2024-11-28 03:38:41,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:38:41,680 INFO L435 NwaCegarLoop]: 1000 mSDtfsCounter, 12 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:41,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2991 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:38:41,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2024-11-28 03:38:41,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 646. [2024-11-28 03:38:41,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 506 states have (on average 1.6541501976284585) internal successors, (837), 524 states have internal predecessors, (837), 109 states have call successors, (109), 30 states have call predecessors, (109), 30 states have return successors, (110), 104 states have call predecessors, (110), 106 states have call successors, (110) [2024-11-28 03:38:41,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1056 transitions. [2024-11-28 03:38:41,719 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1056 transitions. Word has length 134 [2024-11-28 03:38:41,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:41,720 INFO L471 AbstractCegarLoop]: Abstraction has 646 states and 1056 transitions. [2024-11-28 03:38:41,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 03:38:41,720 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1056 transitions. [2024-11-28 03:38:41,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-28 03:38:41,725 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:41,726 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:38:41,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:38:41,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:41,927 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:41,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:41,927 INFO L85 PathProgramCache]: Analyzing trace with hash 422781546, now seen corresponding path program 1 times [2024-11-28 03:38:41,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:41,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130545760] [2024-11-28 03:38:41,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:41,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:42,251 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 03:38:42,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:42,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130545760] [2024-11-28 03:38:42,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130545760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:42,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265385456] [2024-11-28 03:38:42,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:42,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:42,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:42,254 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:42,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:38:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:42,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:38:42,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 03:38:42,784 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:42,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265385456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:42,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:42,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-28 03:38:42,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535045664] [2024-11-28 03:38:42,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:42,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:38:42,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:42,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:38:42,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:38:42,791 INFO L87 Difference]: Start difference. First operand 646 states and 1056 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:38:42,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:42,968 INFO L93 Difference]: Finished difference Result 1283 states and 2102 transitions. [2024-11-28 03:38:42,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:38:42,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 135 [2024-11-28 03:38:42,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:42,974 INFO L225 Difference]: With dead ends: 1283 [2024-11-28 03:38:42,975 INFO L226 Difference]: Without dead ends: 660 [2024-11-28 03:38:42,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:38:42,979 INFO L435 NwaCegarLoop]: 999 mSDtfsCounter, 112 mSDsluCounter, 4879 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 5878 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:42,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 5878 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:38:42,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2024-11-28 03:38:43,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 646. [2024-11-28 03:38:43,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 506 states have (on average 1.6541501976284585) internal successors, (837), 524 states have internal predecessors, (837), 109 states have call successors, (109), 30 states have call predecessors, (109), 30 states have return successors, (110), 104 states have call predecessors, (110), 106 states have call successors, (110) [2024-11-28 03:38:43,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1056 transitions. [2024-11-28 03:38:43,020 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1056 transitions. Word has length 135 [2024-11-28 03:38:43,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:43,020 INFO L471 AbstractCegarLoop]: Abstraction has 646 states and 1056 transitions. [2024-11-28 03:38:43,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:38:43,020 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1056 transitions. [2024-11-28 03:38:43,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-28 03:38:43,025 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:43,026 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:38:43,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:38:43,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:43,227 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:43,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:43,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1729496472, now seen corresponding path program 1 times [2024-11-28 03:38:43,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:43,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329457710] [2024-11-28 03:38:43,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:43,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:43,470 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 03:38:43,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:43,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329457710] [2024-11-28 03:38:43,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329457710] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:43,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495842275] [2024-11-28 03:38:43,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:43,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:43,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:43,473 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:43,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:38:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:43,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:38:43,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:43,894 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 03:38:43,894 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:43,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495842275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:43,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:43,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:38:43,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972574950] [2024-11-28 03:38:43,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:43,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:38:43,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:43,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:38:43,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:38:43,897 INFO L87 Difference]: Start difference. First operand 646 states and 1056 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 03:38:44,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:44,234 INFO L93 Difference]: Finished difference Result 1341 states and 2213 transitions. [2024-11-28 03:38:44,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:38:44,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 136 [2024-11-28 03:38:44,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:44,242 INFO L225 Difference]: With dead ends: 1341 [2024-11-28 03:38:44,242 INFO L226 Difference]: Without dead ends: 718 [2024-11-28 03:38:44,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:38:44,248 INFO L435 NwaCegarLoop]: 986 mSDtfsCounter, 119 mSDsluCounter, 1895 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:44,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 2881 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:38:44,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2024-11-28 03:38:44,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 691. [2024-11-28 03:38:44,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 550 states have (on average 1.6745454545454546) internal successors, (921), 568 states have internal predecessors, (921), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2024-11-28 03:38:44,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1139 transitions. [2024-11-28 03:38:44,296 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1139 transitions. Word has length 136 [2024-11-28 03:38:44,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:44,296 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1139 transitions. [2024-11-28 03:38:44,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 03:38:44,297 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1139 transitions. [2024-11-28 03:38:44,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-28 03:38:44,302 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:44,302 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:38:44,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 03:38:44,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:44,503 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:44,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:44,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1521314598, now seen corresponding path program 1 times [2024-11-28 03:38:44,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:44,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006504034] [2024-11-28 03:38:44,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:44,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:44,752 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 03:38:44,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:44,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006504034] [2024-11-28 03:38:44,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006504034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:44,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807346543] [2024-11-28 03:38:44,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:44,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:44,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:44,755 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:44,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:38:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:45,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:38:45,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:45,221 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 03:38:45,221 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:45,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807346543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:45,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:45,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-28 03:38:45,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079492414] [2024-11-28 03:38:45,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:45,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:38:45,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:45,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:38:45,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:38:45,224 INFO L87 Difference]: Start difference. First operand 691 states and 1139 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:38:45,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:45,476 INFO L93 Difference]: Finished difference Result 1385 states and 2285 transitions. [2024-11-28 03:38:45,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:38:45,476 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 137 [2024-11-28 03:38:45,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:45,483 INFO L225 Difference]: With dead ends: 1385 [2024-11-28 03:38:45,483 INFO L226 Difference]: Without dead ends: 717 [2024-11-28 03:38:45,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:38:45,488 INFO L435 NwaCegarLoop]: 989 mSDtfsCounter, 95 mSDsluCounter, 5837 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 6826 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:45,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 6826 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:38:45,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2024-11-28 03:38:45,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 691. [2024-11-28 03:38:45,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 550 states have (on average 1.6745454545454546) internal successors, (921), 568 states have internal predecessors, (921), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2024-11-28 03:38:45,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1139 transitions. [2024-11-28 03:38:45,528 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1139 transitions. Word has length 137 [2024-11-28 03:38:45,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:45,528 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1139 transitions. [2024-11-28 03:38:45,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:38:45,529 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1139 transitions. [2024-11-28 03:38:45,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-28 03:38:45,535 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:45,535 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:38:45,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:38:45,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:45,737 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:45,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:45,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1712500486, now seen corresponding path program 1 times [2024-11-28 03:38:45,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:45,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055934262] [2024-11-28 03:38:45,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:45,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:46,019 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 03:38:46,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:46,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055934262] [2024-11-28 03:38:46,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055934262] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:46,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131089315] [2024-11-28 03:38:46,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:46,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:46,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:46,023 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:46,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:38:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:46,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:38:46,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:46,487 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 03:38:46,487 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:46,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131089315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:46,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:46,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-28 03:38:46,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790571067] [2024-11-28 03:38:46,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:46,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:38:46,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:46,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:38:46,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:38:46,492 INFO L87 Difference]: Start difference. First operand 691 states and 1139 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:38:46,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:46,743 INFO L93 Difference]: Finished difference Result 1385 states and 2285 transitions. [2024-11-28 03:38:46,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:38:46,744 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 138 [2024-11-28 03:38:46,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:46,750 INFO L225 Difference]: With dead ends: 1385 [2024-11-28 03:38:46,750 INFO L226 Difference]: Without dead ends: 717 [2024-11-28 03:38:46,753 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:38:46,754 INFO L435 NwaCegarLoop]: 989 mSDtfsCounter, 105 mSDsluCounter, 5825 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 6814 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:46,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 6814 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:38:46,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2024-11-28 03:38:46,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 691. [2024-11-28 03:38:46,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 550 states have (on average 1.6745454545454546) internal successors, (921), 568 states have internal predecessors, (921), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2024-11-28 03:38:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1139 transitions. [2024-11-28 03:38:46,792 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1139 transitions. Word has length 138 [2024-11-28 03:38:46,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:46,793 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1139 transitions. [2024-11-28 03:38:46,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:38:46,793 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1139 transitions. [2024-11-28 03:38:46,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-28 03:38:46,799 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:46,800 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:38:46,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 03:38:47,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:47,003 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:47,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:47,004 INFO L85 PathProgramCache]: Analyzing trace with hash -669448801, now seen corresponding path program 1 times [2024-11-28 03:38:47,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:47,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166773773] [2024-11-28 03:38:47,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:47,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:47,205 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 03:38:47,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:47,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166773773] [2024-11-28 03:38:47,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166773773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:47,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523878863] [2024-11-28 03:38:47,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:47,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:47,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:47,208 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:47,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:38:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:47,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:38:47,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:47,679 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 03:38:47,680 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:47,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523878863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:47,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:47,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-28 03:38:47,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234100623] [2024-11-28 03:38:47,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:47,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:38:47,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:47,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:38:47,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:38:47,682 INFO L87 Difference]: Start difference. First operand 691 states and 1139 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:38:47,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:47,890 INFO L93 Difference]: Finished difference Result 1376 states and 2270 transitions. [2024-11-28 03:38:47,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:38:47,890 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 139 [2024-11-28 03:38:47,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:47,897 INFO L225 Difference]: With dead ends: 1376 [2024-11-28 03:38:47,897 INFO L226 Difference]: Without dead ends: 708 [2024-11-28 03:38:47,901 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:38:47,903 INFO L435 NwaCegarLoop]: 989 mSDtfsCounter, 115 mSDsluCounter, 5813 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 6802 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:47,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 6802 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:38:47,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2024-11-28 03:38:47,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 691. [2024-11-28 03:38:47,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 550 states have (on average 1.6745454545454546) internal successors, (921), 568 states have internal predecessors, (921), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2024-11-28 03:38:47,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1139 transitions. [2024-11-28 03:38:47,938 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1139 transitions. Word has length 139 [2024-11-28 03:38:47,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:47,939 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1139 transitions. [2024-11-28 03:38:47,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:38:47,939 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1139 transitions. [2024-11-28 03:38:47,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-28 03:38:47,945 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:47,945 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:38:47,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:38:48,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:48,146 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:48,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:48,147 INFO L85 PathProgramCache]: Analyzing trace with hash -33985283, now seen corresponding path program 1 times [2024-11-28 03:38:48,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:48,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939020262] [2024-11-28 03:38:48,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:48,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:48,264 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 03:38:48,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:48,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939020262] [2024-11-28 03:38:48,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939020262] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:48,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088802182] [2024-11-28 03:38:48,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:48,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:48,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:48,267 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:48,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:38:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:48,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:38:48,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:48,674 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 03:38:48,674 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:48,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088802182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:48,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:48,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 03:38:48,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732280474] [2024-11-28 03:38:48,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:48,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:38:48,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:48,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:38:48,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:38:48,676 INFO L87 Difference]: Start difference. First operand 691 states and 1139 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 03:38:48,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:48,767 INFO L93 Difference]: Finished difference Result 1348 states and 2230 transitions. [2024-11-28 03:38:48,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:38:48,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 139 [2024-11-28 03:38:48,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:48,774 INFO L225 Difference]: With dead ends: 1348 [2024-11-28 03:38:48,774 INFO L226 Difference]: Without dead ends: 691 [2024-11-28 03:38:48,778 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:38:48,778 INFO L435 NwaCegarLoop]: 997 mSDtfsCounter, 20 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2985 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:48,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2985 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:38:48,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2024-11-28 03:38:48,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2024-11-28 03:38:48,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 550 states have (on average 1.6654545454545455) internal successors, (916), 568 states have internal predecessors, (916), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2024-11-28 03:38:48,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1134 transitions. [2024-11-28 03:38:48,810 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1134 transitions. Word has length 139 [2024-11-28 03:38:48,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:48,811 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1134 transitions. [2024-11-28 03:38:48,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 03:38:48,811 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1134 transitions. [2024-11-28 03:38:48,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 03:38:48,816 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:48,817 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:38:48,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 03:38:49,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 03:38:49,017 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:49,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:49,018 INFO L85 PathProgramCache]: Analyzing trace with hash 947141029, now seen corresponding path program 1 times [2024-11-28 03:38:49,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:49,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739251128] [2024-11-28 03:38:49,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:49,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:49,125 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 03:38:49,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:49,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739251128] [2024-11-28 03:38:49,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739251128] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:49,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835518371] [2024-11-28 03:38:49,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:49,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:49,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:49,128 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:49,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:38:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:49,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:38:49,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 03:38:49,587 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:49,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835518371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:49,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:49,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-28 03:38:49,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295038213] [2024-11-28 03:38:49,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:49,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:38:49,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:49,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:38:49,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:38:49,590 INFO L87 Difference]: Start difference. First operand 691 states and 1134 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:38:49,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:49,744 INFO L93 Difference]: Finished difference Result 1316 states and 2162 transitions. [2024-11-28 03:38:49,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:38:49,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 140 [2024-11-28 03:38:49,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:49,753 INFO L225 Difference]: With dead ends: 1316 [2024-11-28 03:38:49,753 INFO L226 Difference]: Without dead ends: 717 [2024-11-28 03:38:49,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:38:49,759 INFO L435 NwaCegarLoop]: 1002 mSDtfsCounter, 90 mSDsluCounter, 4920 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5922 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:49,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5922 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:38:49,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2024-11-28 03:38:49,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 704. [2024-11-28 03:38:49,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 560 states have (on average 1.6625) internal successors, (931), 580 states have internal predecessors, (931), 110 states have call successors, (110), 31 states have call predecessors, (110), 33 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2024-11-28 03:38:49,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1155 transitions. [2024-11-28 03:38:49,810 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1155 transitions. Word has length 140 [2024-11-28 03:38:49,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:49,811 INFO L471 AbstractCegarLoop]: Abstraction has 704 states and 1155 transitions. [2024-11-28 03:38:49,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:38:49,811 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1155 transitions. [2024-11-28 03:38:49,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 03:38:49,818 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:49,818 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:38:49,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 03:38:50,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 03:38:50,019 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:50,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:50,020 INFO L85 PathProgramCache]: Analyzing trace with hash 492880895, now seen corresponding path program 1 times [2024-11-28 03:38:50,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:50,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543012367] [2024-11-28 03:38:50,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:50,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:50,146 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 03:38:50,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:50,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543012367] [2024-11-28 03:38:50,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543012367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:50,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109566890] [2024-11-28 03:38:50,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:50,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:50,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:50,149 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:50,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:38:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:50,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 1411 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:38:50,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:50,613 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 03:38:50,614 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:50,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109566890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:50,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:50,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-28 03:38:50,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583357444] [2024-11-28 03:38:50,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:50,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:38:50,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:50,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:38:50,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:38:50,616 INFO L87 Difference]: Start difference. First operand 704 states and 1155 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:38:50,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:50,753 INFO L93 Difference]: Finished difference Result 1325 states and 2177 transitions. [2024-11-28 03:38:50,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:38:50,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 141 [2024-11-28 03:38:50,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:50,760 INFO L225 Difference]: With dead ends: 1325 [2024-11-28 03:38:50,760 INFO L226 Difference]: Without dead ends: 726 [2024-11-28 03:38:50,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:38:50,764 INFO L435 NwaCegarLoop]: 1002 mSDtfsCounter, 101 mSDsluCounter, 4908 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 5910 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:50,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 5910 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:38:50,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2024-11-28 03:38:50,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 704. [2024-11-28 03:38:50,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 560 states have (on average 1.6625) internal successors, (931), 580 states have internal predecessors, (931), 110 states have call successors, (110), 31 states have call predecessors, (110), 33 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2024-11-28 03:38:50,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1155 transitions. [2024-11-28 03:38:50,829 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1155 transitions. Word has length 141 [2024-11-28 03:38:50,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:50,829 INFO L471 AbstractCegarLoop]: Abstraction has 704 states and 1155 transitions. [2024-11-28 03:38:50,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:38:50,830 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1155 transitions. [2024-11-28 03:38:50,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 03:38:50,835 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:50,835 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:38:50,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 03:38:51,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 03:38:51,035 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:51,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:51,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1534168577, now seen corresponding path program 1 times [2024-11-28 03:38:51,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:51,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501403192] [2024-11-28 03:38:51,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:51,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:51,143 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 03:38:51,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:51,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501403192] [2024-11-28 03:38:51,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501403192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:51,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907391000] [2024-11-28 03:38:51,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:51,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:51,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:51,146 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:51,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:38:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:51,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 1411 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:38:51,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 03:38:51,548 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:51,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907391000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:51,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:51,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 03:38:51,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914659844] [2024-11-28 03:38:51,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:51,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:38:51,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:51,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:38:51,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:38:51,551 INFO L87 Difference]: Start difference. First operand 704 states and 1155 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 03:38:51,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:51,618 INFO L93 Difference]: Finished difference Result 1370 states and 2260 transitions. [2024-11-28 03:38:51,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:38:51,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2024-11-28 03:38:51,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:51,625 INFO L225 Difference]: With dead ends: 1370 [2024-11-28 03:38:51,625 INFO L226 Difference]: Without dead ends: 704 [2024-11-28 03:38:51,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:38:51,629 INFO L435 NwaCegarLoop]: 1001 mSDtfsCounter, 2 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2994 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:51,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2994 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:38:51,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2024-11-28 03:38:51,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 704. [2024-11-28 03:38:51,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 560 states have (on average 1.6571428571428573) internal successors, (928), 580 states have internal predecessors, (928), 110 states have call successors, (110), 31 states have call predecessors, (110), 33 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2024-11-28 03:38:51,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1152 transitions. [2024-11-28 03:38:51,662 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1152 transitions. Word has length 141 [2024-11-28 03:38:51,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:51,662 INFO L471 AbstractCegarLoop]: Abstraction has 704 states and 1152 transitions. [2024-11-28 03:38:51,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 03:38:51,663 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1152 transitions. [2024-11-28 03:38:51,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-28 03:38:51,667 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:51,667 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:38:51,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 03:38:51,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:51,871 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:51,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:51,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1644675339, now seen corresponding path program 1 times [2024-11-28 03:38:51,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:51,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632956515] [2024-11-28 03:38:51,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:51,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:51,983 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 03:38:51,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:51,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632956515] [2024-11-28 03:38:51,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632956515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:51,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973709758] [2024-11-28 03:38:51,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:51,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:51,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:51,986 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:51,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 03:38:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:52,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:38:52,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:52,419 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 03:38:52,419 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:52,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973709758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:52,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:52,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-28 03:38:52,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835770319] [2024-11-28 03:38:52,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:52,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:38:52,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:52,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:38:52,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:38:52,421 INFO L87 Difference]: Start difference. First operand 704 states and 1152 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:38:52,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:52,623 INFO L93 Difference]: Finished difference Result 1328 states and 2178 transitions. [2024-11-28 03:38:52,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:38:52,624 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 142 [2024-11-28 03:38:52,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:52,630 INFO L225 Difference]: With dead ends: 1328 [2024-11-28 03:38:52,630 INFO L226 Difference]: Without dead ends: 729 [2024-11-28 03:38:52,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:38:52,634 INFO L435 NwaCegarLoop]: 989 mSDtfsCounter, 96 mSDsluCounter, 5842 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 6831 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:52,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 6831 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:38:52,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-11-28 03:38:52,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 704. [2024-11-28 03:38:52,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 560 states have (on average 1.6571428571428573) internal successors, (928), 580 states have internal predecessors, (928), 110 states have call successors, (110), 31 states have call predecessors, (110), 33 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2024-11-28 03:38:52,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1152 transitions. [2024-11-28 03:38:52,672 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1152 transitions. Word has length 142 [2024-11-28 03:38:52,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:52,673 INFO L471 AbstractCegarLoop]: Abstraction has 704 states and 1152 transitions. [2024-11-28 03:38:52,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:38:52,674 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1152 transitions. [2024-11-28 03:38:52,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-28 03:38:52,680 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:52,680 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:38:52,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 03:38:52,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 03:38:52,882 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:52,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:52,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1274569187, now seen corresponding path program 1 times [2024-11-28 03:38:52,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:52,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384974996] [2024-11-28 03:38:52,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:52,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:52,989 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 03:38:52,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:52,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384974996] [2024-11-28 03:38:52,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384974996] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:52,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640160844] [2024-11-28 03:38:52,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:52,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:52,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:52,991 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:52,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 03:38:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:53,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:38:53,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:53,451 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 03:38:53,455 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:53,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640160844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:53,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:53,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-28 03:38:53,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299395243] [2024-11-28 03:38:53,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:53,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:38:53,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:53,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:38:53,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:38:53,458 INFO L87 Difference]: Start difference. First operand 704 states and 1152 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:38:53,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:53,664 INFO L93 Difference]: Finished difference Result 1319 states and 2163 transitions. [2024-11-28 03:38:53,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:38:53,665 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 143 [2024-11-28 03:38:53,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:53,671 INFO L225 Difference]: With dead ends: 1319 [2024-11-28 03:38:53,671 INFO L226 Difference]: Without dead ends: 720 [2024-11-28 03:38:53,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:38:53,676 INFO L435 NwaCegarLoop]: 989 mSDtfsCounter, 106 mSDsluCounter, 5830 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 6819 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:53,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 6819 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:38:53,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-11-28 03:38:53,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 704. [2024-11-28 03:38:53,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 560 states have (on average 1.6571428571428573) internal successors, (928), 580 states have internal predecessors, (928), 110 states have call successors, (110), 31 states have call predecessors, (110), 33 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2024-11-28 03:38:53,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1152 transitions. [2024-11-28 03:38:53,712 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1152 transitions. Word has length 143 [2024-11-28 03:38:53,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:53,712 INFO L471 AbstractCegarLoop]: Abstraction has 704 states and 1152 transitions. [2024-11-28 03:38:53,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:38:53,713 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1152 transitions. [2024-11-28 03:38:53,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-28 03:38:53,718 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:53,718 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:38:53,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 03:38:53,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 03:38:53,922 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:53,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:53,923 INFO L85 PathProgramCache]: Analyzing trace with hash -963632634, now seen corresponding path program 1 times [2024-11-28 03:38:53,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:53,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045003074] [2024-11-28 03:38:53,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:53,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:54,015 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 03:38:54,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:54,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045003074] [2024-11-28 03:38:54,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045003074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:54,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266825141] [2024-11-28 03:38:54,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:54,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:54,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:54,018 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:54,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 03:38:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:54,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:38:54,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 03:38:54,418 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:54,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266825141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:54,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:54,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 03:38:54,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349392362] [2024-11-28 03:38:54,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:54,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:38:54,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:54,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:38:54,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:38:54,420 INFO L87 Difference]: Start difference. First operand 704 states and 1152 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 03:38:54,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:54,667 INFO L93 Difference]: Finished difference Result 1405 states and 2312 transitions. [2024-11-28 03:38:54,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:38:54,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2024-11-28 03:38:54,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:54,674 INFO L225 Difference]: With dead ends: 1405 [2024-11-28 03:38:54,674 INFO L226 Difference]: Without dead ends: 806 [2024-11-28 03:38:54,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:38:54,677 INFO L435 NwaCegarLoop]: 958 mSDtfsCounter, 171 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2845 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:54,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2845 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:38:54,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2024-11-28 03:38:54,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 749. [2024-11-28 03:38:54,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 604 states have (on average 1.6754966887417218) internal successors, (1012), 624 states have internal predecessors, (1012), 110 states have call successors, (110), 32 states have call predecessors, (110), 34 states have return successors, (111), 105 states have call predecessors, (111), 107 states have call successors, (111) [2024-11-28 03:38:54,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1233 transitions. [2024-11-28 03:38:54,712 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1233 transitions. Word has length 143 [2024-11-28 03:38:54,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:54,713 INFO L471 AbstractCegarLoop]: Abstraction has 749 states and 1233 transitions. [2024-11-28 03:38:54,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 03:38:54,713 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1233 transitions. [2024-11-28 03:38:54,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 03:38:54,718 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:54,718 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:38:54,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 03:38:54,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 03:38:54,923 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:54,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:54,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1769676112, now seen corresponding path program 1 times [2024-11-28 03:38:54,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:54,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766330363] [2024-11-28 03:38:54,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:54,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 03:38:55,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:55,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766330363] [2024-11-28 03:38:55,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766330363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:55,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134055761] [2024-11-28 03:38:55,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:55,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:55,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:55,032 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:55,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 03:38:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:55,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:38:55,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 03:38:55,525 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:55,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134055761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:55,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:55,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-28 03:38:55,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498285712] [2024-11-28 03:38:55,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:55,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:38:55,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:55,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:38:55,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:38:55,529 INFO L87 Difference]: Start difference. First operand 749 states and 1233 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 03:38:56,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:56,311 INFO L93 Difference]: Finished difference Result 1352 states and 2254 transitions. [2024-11-28 03:38:56,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:38:56,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2024-11-28 03:38:56,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:56,321 INFO L225 Difference]: With dead ends: 1352 [2024-11-28 03:38:56,321 INFO L226 Difference]: Without dead ends: 757 [2024-11-28 03:38:56,324 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:38:56,325 INFO L435 NwaCegarLoop]: 991 mSDtfsCounter, 952 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:56,325 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 2553 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:38:56,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2024-11-28 03:38:56,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 757. [2024-11-28 03:38:56,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 611 states have (on average 1.6759410801963994) internal successors, (1024), 631 states have internal predecessors, (1024), 110 states have call successors, (110), 33 states have call predecessors, (110), 35 states have return successors, (112), 105 states have call predecessors, (112), 107 states have call successors, (112) [2024-11-28 03:38:56,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1246 transitions. [2024-11-28 03:38:56,373 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1246 transitions. Word has length 144 [2024-11-28 03:38:56,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:56,374 INFO L471 AbstractCegarLoop]: Abstraction has 757 states and 1246 transitions. [2024-11-28 03:38:56,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 03:38:56,374 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1246 transitions. [2024-11-28 03:38:56,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-28 03:38:56,381 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:56,381 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:38:56,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 03:38:56,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 03:38:56,582 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:56,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:56,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1586343808, now seen corresponding path program 1 times [2024-11-28 03:38:56,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:56,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518717158] [2024-11-28 03:38:56,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:56,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:56,710 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 03:38:56,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:56,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518717158] [2024-11-28 03:38:56,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518717158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:56,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328297516] [2024-11-28 03:38:56,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:56,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:56,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:56,713 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:56,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 03:38:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:57,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:38:57,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:57,218 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 03:38:57,218 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:57,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328297516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:57,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:57,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-28 03:38:57,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070648276] [2024-11-28 03:38:57,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:57,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:38:57,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:57,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:38:57,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:38:57,221 INFO L87 Difference]: Start difference. First operand 757 states and 1246 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 03:38:57,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:57,884 INFO L93 Difference]: Finished difference Result 1368 states and 2277 transitions. [2024-11-28 03:38:57,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:38:57,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 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 03:38:57,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:57,892 INFO L225 Difference]: With dead ends: 1368 [2024-11-28 03:38:57,892 INFO L226 Difference]: Without dead ends: 765 [2024-11-28 03:38:57,895 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:38:57,896 INFO L435 NwaCegarLoop]: 988 mSDtfsCounter, 953 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:57,896 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 2550 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:38:57,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2024-11-28 03:38:57,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 765. [2024-11-28 03:38:57,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 618 states have (on average 1.6763754045307444) internal successors, (1036), 638 states have internal predecessors, (1036), 110 states have call successors, (110), 34 states have call predecessors, (110), 36 states have return successors, (113), 105 states have call predecessors, (113), 107 states have call successors, (113) [2024-11-28 03:38:57,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1259 transitions. [2024-11-28 03:38:57,929 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1259 transitions. Word has length 146 [2024-11-28 03:38:57,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:57,930 INFO L471 AbstractCegarLoop]: Abstraction has 765 states and 1259 transitions. [2024-11-28 03:38:57,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 03:38:57,930 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1259 transitions. [2024-11-28 03:38:57,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-28 03:38:57,955 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:57,955 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:38:57,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 03:38:58,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 03:38:58,156 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:58,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:58,157 INFO L85 PathProgramCache]: Analyzing trace with hash -723077680, now seen corresponding path program 1 times [2024-11-28 03:38:58,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:58,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121126945] [2024-11-28 03:38:58,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:58,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:58,252 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 03:38:58,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:58,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121126945] [2024-11-28 03:38:58,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121126945] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:58,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476977169] [2024-11-28 03:38:58,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:58,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:58,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:58,256 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:58,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 03:38:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:58,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 1414 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:38:58,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:58,758 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 03:38:58,758 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:58,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476977169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:58,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:58,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-28 03:38:58,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518965542] [2024-11-28 03:38:58,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:58,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:38:58,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:58,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:38:58,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:38:58,761 INFO L87 Difference]: Start difference. First operand 765 states and 1259 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 03:38:59,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:59,407 INFO L93 Difference]: Finished difference Result 1384 states and 2300 transitions. [2024-11-28 03:38:59,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:38:59,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 148 [2024-11-28 03:38:59,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:59,414 INFO L225 Difference]: With dead ends: 1384 [2024-11-28 03:38:59,414 INFO L226 Difference]: Without dead ends: 773 [2024-11-28 03:38:59,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:38:59,418 INFO L435 NwaCegarLoop]: 985 mSDtfsCounter, 947 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 2547 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:59,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 2547 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:38:59,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2024-11-28 03:38:59,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 773. [2024-11-28 03:38:59,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 625 states have (on average 1.6768) internal successors, (1048), 645 states have internal predecessors, (1048), 110 states have call successors, (110), 35 states have call predecessors, (110), 37 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2024-11-28 03:38:59,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1272 transitions. [2024-11-28 03:38:59,456 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1272 transitions. Word has length 148 [2024-11-28 03:38:59,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:59,456 INFO L471 AbstractCegarLoop]: Abstraction has 773 states and 1272 transitions. [2024-11-28 03:38:59,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 03:38:59,457 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1272 transitions. [2024-11-28 03:38:59,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-28 03:38:59,461 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:59,462 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:38:59,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-28 03:38:59,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:59,663 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:59,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:59,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1204207480, now seen corresponding path program 1 times [2024-11-28 03:38:59,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:59,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824262776] [2024-11-28 03:38:59,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:59,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:59,778 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-28 03:38:59,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:59,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824262776] [2024-11-28 03:38:59,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824262776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:59,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640830464] [2024-11-28 03:38:59,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:59,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:59,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:59,781 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:59,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 03:39:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:00,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:39:00,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:00,255 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 03:39:00,256 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:39:00,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640830464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:00,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:39:00,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-28 03:39:00,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388739986] [2024-11-28 03:39:00,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:00,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:39:00,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:00,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:39:00,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:39:00,258 INFO L87 Difference]: Start difference. First operand 773 states and 1272 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 03:39:00,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:00,887 INFO L93 Difference]: Finished difference Result 1400 states and 2323 transitions. [2024-11-28 03:39:00,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:39:00,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 150 [2024-11-28 03:39:00,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:00,894 INFO L225 Difference]: With dead ends: 1400 [2024-11-28 03:39:00,894 INFO L226 Difference]: Without dead ends: 781 [2024-11-28 03:39:00,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:39:00,898 INFO L435 NwaCegarLoop]: 982 mSDtfsCounter, 925 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:00,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 2544 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:39:00,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2024-11-28 03:39:00,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 781. [2024-11-28 03:39:00,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 632 states have (on average 1.6772151898734178) internal successors, (1060), 652 states have internal predecessors, (1060), 110 states have call successors, (110), 36 states have call predecessors, (110), 38 states have return successors, (115), 105 states have call predecessors, (115), 107 states have call successors, (115) [2024-11-28 03:39:00,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1285 transitions. [2024-11-28 03:39:00,930 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1285 transitions. Word has length 150 [2024-11-28 03:39:00,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:00,931 INFO L471 AbstractCegarLoop]: Abstraction has 781 states and 1285 transitions. [2024-11-28 03:39:00,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 03:39:00,931 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1285 transitions. [2024-11-28 03:39:00,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-28 03:39:00,935 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:00,935 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:39:00,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-28 03:39:01,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:01,136 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:01,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:01,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1396936624, now seen corresponding path program 1 times [2024-11-28 03:39:01,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:01,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933415656] [2024-11-28 03:39:01,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:01,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:01,232 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 03:39:01,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:01,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933415656] [2024-11-28 03:39:01,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933415656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:01,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287025405] [2024-11-28 03:39:01,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:01,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:01,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:01,235 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:01,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 03:39:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:01,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 1418 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:39:01,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:01,608 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-28 03:39:01,608 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:39:01,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287025405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:01,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:39:01,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-28 03:39:01,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276967748] [2024-11-28 03:39:01,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:01,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:39:01,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:01,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:39:01,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:39:01,610 INFO L87 Difference]: Start difference. First operand 781 states and 1285 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 03:39:01,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:01,686 INFO L93 Difference]: Finished difference Result 1539 states and 2544 transitions. [2024-11-28 03:39:01,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:39:01,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2024-11-28 03:39:01,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:01,694 INFO L225 Difference]: With dead ends: 1539 [2024-11-28 03:39:01,694 INFO L226 Difference]: Without dead ends: 746 [2024-11-28 03:39:01,697 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:39:01,698 INFO L435 NwaCegarLoop]: 998 mSDtfsCounter, 7 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2986 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:01,699 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2986 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:39:01,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2024-11-28 03:39:01,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 746. [2024-11-28 03:39:01,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 600 states have (on average 1.6566666666666667) internal successors, (994), 618 states have internal predecessors, (994), 109 states have call successors, (109), 36 states have call predecessors, (109), 36 states have return successors, (112), 104 states have call predecessors, (112), 106 states have call successors, (112) [2024-11-28 03:39:01,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1215 transitions. [2024-11-28 03:39:01,740 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1215 transitions. Word has length 152 [2024-11-28 03:39:01,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:01,740 INFO L471 AbstractCegarLoop]: Abstraction has 746 states and 1215 transitions. [2024-11-28 03:39:01,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 03:39:01,740 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1215 transitions. [2024-11-28 03:39:01,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-28 03:39:01,745 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:01,746 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:39:01,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 03:39:01,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:01,946 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:01,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:01,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1946789330, now seen corresponding path program 1 times [2024-11-28 03:39:01,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:01,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712219424] [2024-11-28 03:39:01,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:01,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:02,121 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 03:39:02,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:02,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712219424] [2024-11-28 03:39:02,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712219424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:02,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619495356] [2024-11-28 03:39:02,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:02,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:02,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:02,124 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:02,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 03:39:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:02,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 03:39:02,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:02,524 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 03:39:02,524 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:39:02,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619495356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:02,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:39:02,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-11-28 03:39:02,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601771235] [2024-11-28 03:39:02,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:02,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:39:02,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:02,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:39:02,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:39:02,527 INFO L87 Difference]: Start difference. First operand 746 states and 1215 transitions. Second operand has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:39:02,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:02,667 INFO L93 Difference]: Finished difference Result 1489 states and 2424 transitions. [2024-11-28 03:39:02,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:39:02,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 153 [2024-11-28 03:39:02,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:02,678 INFO L225 Difference]: With dead ends: 1489 [2024-11-28 03:39:02,678 INFO L226 Difference]: Without dead ends: 760 [2024-11-28 03:39:02,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:39:02,683 INFO L435 NwaCegarLoop]: 1008 mSDtfsCounter, 122 mSDsluCounter, 4901 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 5909 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:02,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 5909 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:39:02,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2024-11-28 03:39:02,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 739. [2024-11-28 03:39:02,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 593 states have (on average 1.6492411467116357) internal successors, (978), 611 states have internal predecessors, (978), 109 states have call successors, (109), 36 states have call predecessors, (109), 36 states have return successors, (112), 104 states have call predecessors, (112), 106 states have call successors, (112) [2024-11-28 03:39:02,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1199 transitions. [2024-11-28 03:39:02,724 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1199 transitions. Word has length 153 [2024-11-28 03:39:02,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:02,724 INFO L471 AbstractCegarLoop]: Abstraction has 739 states and 1199 transitions. [2024-11-28 03:39:02,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:39:02,725 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1199 transitions. [2024-11-28 03:39:02,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-28 03:39:02,729 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:02,729 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:39:02,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 03:39:02,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:02,930 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:02,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:02,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1983977010, now seen corresponding path program 1 times [2024-11-28 03:39:02,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:02,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802608254] [2024-11-28 03:39:02,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:02,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:03,102 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 03:39:03,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:03,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802608254] [2024-11-28 03:39:03,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802608254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:03,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:03,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:39:03,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492846471] [2024-11-28 03:39:03,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:03,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:39:03,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:03,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:39:03,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:39:03,106 INFO L87 Difference]: Start difference. First operand 739 states and 1199 transitions. Second operand has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:39:03,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:03,225 INFO L93 Difference]: Finished difference Result 1393 states and 2272 transitions. [2024-11-28 03:39:03,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:39:03,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 154 [2024-11-28 03:39:03,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:03,231 INFO L225 Difference]: With dead ends: 1393 [2024-11-28 03:39:03,231 INFO L226 Difference]: Without dead ends: 762 [2024-11-28 03:39:03,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:39:03,235 INFO L435 NwaCegarLoop]: 996 mSDtfsCounter, 126 mSDsluCounter, 4857 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5853 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:03,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5853 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:39:03,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2024-11-28 03:39:03,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 739. [2024-11-28 03:39:03,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 593 states have (on average 1.6492411467116357) internal successors, (978), 611 states have internal predecessors, (978), 109 states have call successors, (109), 36 states have call predecessors, (109), 36 states have return successors, (112), 104 states have call predecessors, (112), 106 states have call successors, (112) [2024-11-28 03:39:03,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1199 transitions. [2024-11-28 03:39:03,265 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1199 transitions. Word has length 154 [2024-11-28 03:39:03,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:03,266 INFO L471 AbstractCegarLoop]: Abstraction has 739 states and 1199 transitions. [2024-11-28 03:39:03,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 03:39:03,266 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1199 transitions. [2024-11-28 03:39:03,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-28 03:39:03,269 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:03,269 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:39:03,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 03:39:03,269 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:03,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:03,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1547062338, now seen corresponding path program 1 times [2024-11-28 03:39:03,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:03,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373247223] [2024-11-28 03:39:03,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:03,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:03,379 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 03:39:03,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:03,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373247223] [2024-11-28 03:39:03,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373247223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:03,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:03,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:39:03,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655249877] [2024-11-28 03:39:03,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:03,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:39:03,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:03,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:39:03,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:39:03,382 INFO L87 Difference]: Start difference. First operand 739 states and 1199 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 03:39:03,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:03,463 INFO L93 Difference]: Finished difference Result 1433 states and 2341 transitions. [2024-11-28 03:39:03,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:39:03,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 154 [2024-11-28 03:39:03,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:03,469 INFO L225 Difference]: With dead ends: 1433 [2024-11-28 03:39:03,469 INFO L226 Difference]: Without dead ends: 697 [2024-11-28 03:39:03,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:39:03,474 INFO L435 NwaCegarLoop]: 997 mSDtfsCounter, 8 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2985 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:03,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2985 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:39:03,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-11-28 03:39:03,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2024-11-28 03:39:03,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 554 states have (on average 1.6335740072202165) internal successors, (905), 570 states have internal predecessors, (905), 108 states have call successors, (108), 36 states have call predecessors, (108), 34 states have return successors, (109), 103 states have call predecessors, (109), 105 states have call successors, (109) [2024-11-28 03:39:03,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1122 transitions. [2024-11-28 03:39:03,499 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1122 transitions. Word has length 154 [2024-11-28 03:39:03,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:03,500 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 1122 transitions. [2024-11-28 03:39:03,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 03:39:03,500 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1122 transitions. [2024-11-28 03:39:03,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 03:39:03,503 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:03,503 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:39:03,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 03:39:03,503 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:03,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:03,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1179844116, now seen corresponding path program 1 times [2024-11-28 03:39:03,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:03,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316706007] [2024-11-28 03:39:03,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:03,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 03:39:03,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:03,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316706007] [2024-11-28 03:39:03,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316706007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:03,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669001096] [2024-11-28 03:39:03,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:03,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:03,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:03,837 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:03,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 03:39:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:04,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 1426 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 03:39:04,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:04,435 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-28 03:39:04,435 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:39:04,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669001096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:04,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:39:04,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-28 03:39:04,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583699665] [2024-11-28 03:39:04,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:04,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:39:04,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:04,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:39:04,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:39:04,439 INFO L87 Difference]: Start difference. First operand 697 states and 1122 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 03:39:05,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:05,066 INFO L93 Difference]: Finished difference Result 1957 states and 3236 transitions. [2024-11-28 03:39:05,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:39:05,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 155 [2024-11-28 03:39:05,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:05,076 INFO L225 Difference]: With dead ends: 1957 [2024-11-28 03:39:05,076 INFO L226 Difference]: Without dead ends: 1330 [2024-11-28 03:39:05,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:39:05,080 INFO L435 NwaCegarLoop]: 1055 mSDtfsCounter, 923 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 3905 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:05,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 3905 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:39:05,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2024-11-28 03:39:05,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1320. [2024-11-28 03:39:05,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1048 states have (on average 1.6498091603053435) internal successors, (1729), 1080 states have internal predecessors, (1729), 206 states have call successors, (206), 66 states have call predecessors, (206), 65 states have return successors, (230), 199 states have call predecessors, (230), 202 states have call successors, (230) [2024-11-28 03:39:05,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 2165 transitions. [2024-11-28 03:39:05,139 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 2165 transitions. Word has length 155 [2024-11-28 03:39:05,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:05,139 INFO L471 AbstractCegarLoop]: Abstraction has 1320 states and 2165 transitions. [2024-11-28 03:39:05,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 03:39:05,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 2165 transitions. [2024-11-28 03:39:05,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 03:39:05,143 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:05,143 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:39:05,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 03:39:05,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:05,347 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:05,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:05,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1991027621, now seen corresponding path program 1 times [2024-11-28 03:39:05,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:05,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85399876] [2024-11-28 03:39:05,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:05,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:05,720 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 03:39:05,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:05,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85399876] [2024-11-28 03:39:05,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85399876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:05,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626744302] [2024-11-28 03:39:05,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:05,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:05,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:05,723 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:05,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 03:39:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:06,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 1443 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:39:06,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:06,098 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-28 03:39:06,098 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:39:06,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626744302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:06,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:39:06,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-28 03:39:06,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099876353] [2024-11-28 03:39:06,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:06,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:39:06,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:06,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:39:06,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:39:06,101 INFO L87 Difference]: Start difference. First operand 1320 states and 2165 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 03:39:06,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:06,203 INFO L93 Difference]: Finished difference Result 3188 states and 5307 transitions. [2024-11-28 03:39:06,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:39:06,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2024-11-28 03:39:06,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:06,218 INFO L225 Difference]: With dead ends: 3188 [2024-11-28 03:39:06,218 INFO L226 Difference]: Without dead ends: 1939 [2024-11-28 03:39:06,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:39:06,224 INFO L435 NwaCegarLoop]: 1875 mSDtfsCounter, 974 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:06,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 2875 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:39:06,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2024-11-28 03:39:06,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1320. [2024-11-28 03:39:06,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1048 states have (on average 1.6488549618320612) internal successors, (1728), 1080 states have internal predecessors, (1728), 206 states have call successors, (206), 66 states have call predecessors, (206), 65 states have return successors, (230), 199 states have call predecessors, (230), 202 states have call successors, (230) [2024-11-28 03:39:06,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 2164 transitions. [2024-11-28 03:39:06,289 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 2164 transitions. Word has length 160 [2024-11-28 03:39:06,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:06,290 INFO L471 AbstractCegarLoop]: Abstraction has 1320 states and 2164 transitions. [2024-11-28 03:39:06,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 03:39:06,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 2164 transitions. [2024-11-28 03:39:06,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 03:39:06,293 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:06,294 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:39:06,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 03:39:06,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 03:39:06,496 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:06,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:06,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1716268007, now seen corresponding path program 1 times [2024-11-28 03:39:06,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:06,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435390484] [2024-11-28 03:39:06,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:06,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:06,834 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 03:39:06,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:06,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435390484] [2024-11-28 03:39:06,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435390484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:06,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254041400] [2024-11-28 03:39:06,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:06,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:06,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:06,837 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:06,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 03:39:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:07,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:39:07,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:07,279 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-28 03:39:07,279 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:39:07,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254041400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:07,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:39:07,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-11-28 03:39:07,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942121920] [2024-11-28 03:39:07,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:07,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:39:07,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:07,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:39:07,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:39:07,281 INFO L87 Difference]: Start difference. First operand 1320 states and 2164 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 03:39:07,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:07,798 INFO L93 Difference]: Finished difference Result 1941 states and 3213 transitions. [2024-11-28 03:39:07,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:39:07,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2024-11-28 03:39:07,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:07,813 INFO L225 Difference]: With dead ends: 1941 [2024-11-28 03:39:07,814 INFO L226 Difference]: Without dead ends: 1938 [2024-11-28 03:39:07,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:39:07,819 INFO L435 NwaCegarLoop]: 1827 mSDtfsCounter, 946 mSDsluCounter, 5406 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 7233 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:07,820 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 7233 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:39:07,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2024-11-28 03:39:07,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 1930. [2024-11-28 03:39:07,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1534 states have (on average 1.6577574967405475) internal successors, (2543), 1578 states have internal predecessors, (2543), 302 states have call successors, (302), 95 states have call predecessors, (302), 93 states have return successors, (346), 295 states have call predecessors, (346), 297 states have call successors, (346) [2024-11-28 03:39:07,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 3191 transitions. [2024-11-28 03:39:07,902 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 3191 transitions. Word has length 160 [2024-11-28 03:39:07,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:07,904 INFO L471 AbstractCegarLoop]: Abstraction has 1930 states and 3191 transitions. [2024-11-28 03:39:07,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 03:39:07,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 3191 transitions. [2024-11-28 03:39:07,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 03:39:07,907 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:07,907 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:39:07,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-28 03:39:08,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 03:39:08,108 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:08,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:08,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2063414179, now seen corresponding path program 1 times [2024-11-28 03:39:08,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:08,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136566473] [2024-11-28 03:39:08,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:08,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 03:39:08,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:08,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136566473] [2024-11-28 03:39:08,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136566473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:08,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868722205] [2024-11-28 03:39:08,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:08,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:08,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:08,455 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:08,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 03:39:08,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:08,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:39:08,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:08,869 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-28 03:39:08,869 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:39:08,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868722205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:08,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:39:08,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-28 03:39:08,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057228958] [2024-11-28 03:39:08,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:08,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:39:08,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:08,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:39:08,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:39:08,871 INFO L87 Difference]: Start difference. First operand 1930 states and 3191 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 03:39:08,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:08,974 INFO L93 Difference]: Finished difference Result 3808 states and 6364 transitions. [2024-11-28 03:39:08,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:39:08,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2024-11-28 03:39:08,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:08,987 INFO L225 Difference]: With dead ends: 3808 [2024-11-28 03:39:08,988 INFO L226 Difference]: Without dead ends: 1948 [2024-11-28 03:39:09,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:39:09,049 INFO L435 NwaCegarLoop]: 1003 mSDtfsCounter, 25 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2976 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:09,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2976 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:39:09,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2024-11-28 03:39:09,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1948. [2024-11-28 03:39:09,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1549 states have (on average 1.6533247256294383) internal successors, (2561), 1593 states have internal predecessors, (2561), 302 states have call successors, (302), 98 states have call predecessors, (302), 96 states have return successors, (346), 295 states have call predecessors, (346), 297 states have call successors, (346) [2024-11-28 03:39:09,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 3209 transitions. [2024-11-28 03:39:09,154 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 3209 transitions. Word has length 160 [2024-11-28 03:39:09,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:09,157 INFO L471 AbstractCegarLoop]: Abstraction has 1948 states and 3209 transitions. [2024-11-28 03:39:09,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 03:39:09,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 3209 transitions. [2024-11-28 03:39:09,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-28 03:39:09,163 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:09,163 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:39:09,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 03:39:09,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 03:39:09,367 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:09,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:09,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1065403566, now seen corresponding path program 1 times [2024-11-28 03:39:09,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:09,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125960563] [2024-11-28 03:39:09,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:09,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:09,731 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 03:39:09,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:09,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125960563] [2024-11-28 03:39:09,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125960563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:09,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485829011] [2024-11-28 03:39:09,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:09,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:09,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:09,734 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:09,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 03:39:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:10,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:39:10,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:10,318 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 03:39:10,318 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:39:10,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485829011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:10,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:39:10,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-28 03:39:10,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686274035] [2024-11-28 03:39:10,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:10,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:39:10,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:10,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:39:10,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:39:10,320 INFO L87 Difference]: Start difference. First operand 1948 states and 3209 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 03:39:15,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:15,326 INFO L93 Difference]: Finished difference Result 6834 states and 11518 transitions. [2024-11-28 03:39:15,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:39:15,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 161 [2024-11-28 03:39:15,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:15,362 INFO L225 Difference]: With dead ends: 6834 [2024-11-28 03:39:15,362 INFO L226 Difference]: Without dead ends: 4956 [2024-11-28 03:39:15,375 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:39:15,380 INFO L435 NwaCegarLoop]: 452 mSDtfsCounter, 3333 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 5878 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3450 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 6670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 5878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:15,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3450 Valid, 1670 Invalid, 6670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [792 Valid, 5878 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-28 03:39:15,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4956 states. [2024-11-28 03:39:15,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4956 to 4682. [2024-11-28 03:39:15,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4682 states, 3705 states have (on average 1.641565452091768) internal successors, (6082), 3804 states have internal predecessors, (6082), 733 states have call successors, (733), 244 states have call predecessors, (733), 243 states have return successors, (951), 717 states have call predecessors, (951), 724 states have call successors, (951) [2024-11-28 03:39:15,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4682 states to 4682 states and 7766 transitions. [2024-11-28 03:39:15,606 INFO L78 Accepts]: Start accepts. Automaton has 4682 states and 7766 transitions. Word has length 161 [2024-11-28 03:39:15,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:15,606 INFO L471 AbstractCegarLoop]: Abstraction has 4682 states and 7766 transitions. [2024-11-28 03:39:15,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 03:39:15,606 INFO L276 IsEmpty]: Start isEmpty. Operand 4682 states and 7766 transitions. [2024-11-28 03:39:15,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-28 03:39:15,641 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:15,642 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:39:15,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 03:39:15,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 03:39:15,842 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:15,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:15,843 INFO L85 PathProgramCache]: Analyzing trace with hash 536596573, now seen corresponding path program 1 times [2024-11-28 03:39:15,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:15,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760756468] [2024-11-28 03:39:15,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:15,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:16,148 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 03:39:16,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:16,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760756468] [2024-11-28 03:39:16,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760756468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:16,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950157915] [2024-11-28 03:39:16,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:16,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:16,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:16,151 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:16,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 03:39:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:16,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:39:16,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:16,772 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-28 03:39:16,772 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:39:16,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950157915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:16,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:39:16,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-11-28 03:39:16,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521092816] [2024-11-28 03:39:16,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:16,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:39:16,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:16,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:39:16,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:39:16,774 INFO L87 Difference]: Start difference. First operand 4682 states and 7766 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 03:39:17,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:17,680 INFO L93 Difference]: Finished difference Result 10517 states and 17626 transitions. [2024-11-28 03:39:17,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:39:17,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 162 [2024-11-28 03:39:17,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:17,714 INFO L225 Difference]: With dead ends: 10517 [2024-11-28 03:39:17,714 INFO L226 Difference]: Without dead ends: 5894 [2024-11-28 03:39:17,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:39:17,739 INFO L435 NwaCegarLoop]: 1336 mSDtfsCounter, 1759 mSDsluCounter, 4364 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 5700 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:17,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1761 Valid, 5700 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:39:17,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5894 states. [2024-11-28 03:39:18,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5894 to 5879. [2024-11-28 03:39:18,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5879 states, 4727 states have (on average 1.6333826951554897) internal successors, (7721), 4828 states have internal predecessors, (7721), 815 states have call successors, (815), 336 states have call predecessors, (815), 336 states have return successors, (1283), 798 states have call predecessors, (1283), 800 states have call successors, (1283) [2024-11-28 03:39:18,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5879 states to 5879 states and 9819 transitions. [2024-11-28 03:39:18,120 INFO L78 Accepts]: Start accepts. Automaton has 5879 states and 9819 transitions. Word has length 162 [2024-11-28 03:39:18,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:18,121 INFO L471 AbstractCegarLoop]: Abstraction has 5879 states and 9819 transitions. [2024-11-28 03:39:18,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 03:39:18,121 INFO L276 IsEmpty]: Start isEmpty. Operand 5879 states and 9819 transitions. [2024-11-28 03:39:18,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-28 03:39:18,127 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:18,127 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:39:18,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-28 03:39:18,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:18,331 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:18,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:18,332 INFO L85 PathProgramCache]: Analyzing trace with hash -751535514, now seen corresponding path program 1 times [2024-11-28 03:39:18,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:18,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451363413] [2024-11-28 03:39:18,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:18,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:18,688 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 03:39:18,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:18,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451363413] [2024-11-28 03:39:18,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451363413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:18,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104562945] [2024-11-28 03:39:18,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:18,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:18,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:18,691 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:18,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 03:39:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:19,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:39:19,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:19,250 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 03:39:19,250 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:39:19,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104562945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:19,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:39:19,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-28 03:39:19,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614897794] [2024-11-28 03:39:19,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:19,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:39:19,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:19,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:39:19,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:39:19,252 INFO L87 Difference]: Start difference. First operand 5879 states and 9819 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 03:39:23,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:23,595 INFO L93 Difference]: Finished difference Result 11436 states and 19114 transitions. [2024-11-28 03:39:23,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:39:23,595 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 164 [2024-11-28 03:39:23,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:23,633 INFO L225 Difference]: With dead ends: 11436 [2024-11-28 03:39:23,633 INFO L226 Difference]: Without dead ends: 6342 [2024-11-28 03:39:23,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:39:23,656 INFO L435 NwaCegarLoop]: 456 mSDtfsCounter, 3454 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 5159 mSolverCounterSat, 821 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3571 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 5980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 821 IncrementalHoareTripleChecker+Valid, 5159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:23,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3571 Valid, 1381 Invalid, 5980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [821 Valid, 5159 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-28 03:39:23,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6342 states. [2024-11-28 03:39:23,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6342 to 5875. [2024-11-28 03:39:23,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5875 states, 4723 states have (on average 1.6322252805420283) internal successors, (7709), 4824 states have internal predecessors, (7709), 815 states have call successors, (815), 336 states have call predecessors, (815), 336 states have return successors, (1283), 798 states have call predecessors, (1283), 800 states have call successors, (1283) [2024-11-28 03:39:23,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5875 states to 5875 states and 9807 transitions. [2024-11-28 03:39:23,949 INFO L78 Accepts]: Start accepts. Automaton has 5875 states and 9807 transitions. Word has length 164 [2024-11-28 03:39:23,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:23,950 INFO L471 AbstractCegarLoop]: Abstraction has 5875 states and 9807 transitions. [2024-11-28 03:39:23,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 03:39:23,950 INFO L276 IsEmpty]: Start isEmpty. Operand 5875 states and 9807 transitions. [2024-11-28 03:39:23,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-28 03:39:23,953 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:23,954 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:39:23,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-28 03:39:24,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:24,155 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:24,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:24,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1217994614, now seen corresponding path program 1 times [2024-11-28 03:39:24,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:24,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608136163] [2024-11-28 03:39:24,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:24,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:24,492 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-28 03:39:24,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:24,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608136163] [2024-11-28 03:39:24,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608136163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:24,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657731561] [2024-11-28 03:39:24,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:24,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:24,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:24,496 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:24,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 03:39:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:24,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:39:24,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 03:39:25,120 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:39:25,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657731561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:25,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:39:25,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-28 03:39:25,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474541820] [2024-11-28 03:39:25,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:25,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:39:25,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:25,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:39:25,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:39:25,173 INFO L87 Difference]: Start difference. First operand 5875 states and 9807 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 03:39:29,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:29,753 INFO L93 Difference]: Finished difference Result 17700 states and 30875 transitions. [2024-11-28 03:39:29,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:39:29,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 165 [2024-11-28 03:39:29,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:29,828 INFO L225 Difference]: With dead ends: 17700 [2024-11-28 03:39:29,828 INFO L226 Difference]: Without dead ends: 11893 [2024-11-28 03:39:29,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:39:29,869 INFO L435 NwaCegarLoop]: 300 mSDtfsCounter, 4175 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 3595 mSolverCounterSat, 1076 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4288 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 4671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1076 IncrementalHoareTripleChecker+Valid, 3595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:29,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4288 Valid, 1130 Invalid, 4671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1076 Valid, 3595 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-28 03:39:29,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11893 states. [2024-11-28 03:39:30,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11893 to 10456. [2024-11-28 03:39:30,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10456 states, 8386 states have (on average 1.6050560457906033) internal successors, (13460), 8574 states have internal predecessors, (13460), 1449 states have call successors, (1449), 611 states have call predecessors, (1449), 620 states have return successors, (2259), 1426 states have call predecessors, (2259), 1430 states have call successors, (2259) [2024-11-28 03:39:30,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10456 states to 10456 states and 17168 transitions. [2024-11-28 03:39:30,638 INFO L78 Accepts]: Start accepts. Automaton has 10456 states and 17168 transitions. Word has length 165 [2024-11-28 03:39:30,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:30,639 INFO L471 AbstractCegarLoop]: Abstraction has 10456 states and 17168 transitions. [2024-11-28 03:39:30,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 03:39:30,639 INFO L276 IsEmpty]: Start isEmpty. Operand 10456 states and 17168 transitions. [2024-11-28 03:39:30,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-28 03:39:30,643 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:30,644 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:39:30,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-28 03:39:30,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:30,848 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:30,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:30,848 INFO L85 PathProgramCache]: Analyzing trace with hash 517217660, now seen corresponding path program 1 times [2024-11-28 03:39:30,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:30,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243842709] [2024-11-28 03:39:30,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:30,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:31,275 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 03:39:31,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:31,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243842709] [2024-11-28 03:39:31,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243842709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:31,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958188455] [2024-11-28 03:39:31,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:31,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:31,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:31,283 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:31,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 03:39:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:31,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:39:31,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:31,692 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 03:39:31,693 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:39:31,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958188455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:31,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:39:31,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-28 03:39:31,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075673680] [2024-11-28 03:39:31,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:31,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:39:31,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:31,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:39:31,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:39:31,697 INFO L87 Difference]: Start difference. First operand 10456 states and 17168 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 03:39:32,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:32,284 INFO L93 Difference]: Finished difference Result 20912 states and 34967 transitions. [2024-11-28 03:39:32,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:39:32,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 166 [2024-11-28 03:39:32,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:32,345 INFO L225 Difference]: With dead ends: 20912 [2024-11-28 03:39:32,345 INFO L226 Difference]: Without dead ends: 10431 [2024-11-28 03:39:32,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:39:32,403 INFO L435 NwaCegarLoop]: 1002 mSDtfsCounter, 31 mSDsluCounter, 1969 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 2971 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:32,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 2971 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:39:32,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10431 states. [2024-11-28 03:39:33,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10431 to 10431. [2024-11-28 03:39:33,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10431 states, 8361 states have (on average 1.5978949886377227) internal successors, (13360), 8549 states have internal predecessors, (13360), 1449 states have call successors, (1449), 611 states have call predecessors, (1449), 620 states have return successors, (2259), 1426 states have call predecessors, (2259), 1430 states have call successors, (2259) [2024-11-28 03:39:33,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10431 states to 10431 states and 17068 transitions. [2024-11-28 03:39:33,485 INFO L78 Accepts]: Start accepts. Automaton has 10431 states and 17068 transitions. Word has length 166 [2024-11-28 03:39:33,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:33,485 INFO L471 AbstractCegarLoop]: Abstraction has 10431 states and 17068 transitions. [2024-11-28 03:39:33,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 03:39:33,486 INFO L276 IsEmpty]: Start isEmpty. Operand 10431 states and 17068 transitions. [2024-11-28 03:39:33,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-28 03:39:33,489 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:33,490 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:39:33,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-28 03:39:33,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:33,691 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:33,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:33,691 INFO L85 PathProgramCache]: Analyzing trace with hash 381597227, now seen corresponding path program 1 times [2024-11-28 03:39:33,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:33,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499720573] [2024-11-28 03:39:33,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:33,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:33,984 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 03:39:33,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:33,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499720573] [2024-11-28 03:39:33,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499720573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:33,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553722343] [2024-11-28 03:39:33,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:33,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:33,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:33,987 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:33,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 03:39:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:34,366 INFO L256 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:39:34,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:34,616 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 03:39:34,616 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:39:34,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553722343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:34,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:39:34,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-28 03:39:34,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612817186] [2024-11-28 03:39:34,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:34,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:39:34,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:34,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:39:34,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:39:34,618 INFO L87 Difference]: Start difference. First operand 10431 states and 17068 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 03:39:39,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:39,263 INFO L93 Difference]: Finished difference Result 22321 states and 37860 transitions. [2024-11-28 03:39:39,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:39:39,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 166 [2024-11-28 03:39:39,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:39,324 INFO L225 Difference]: With dead ends: 22321 [2024-11-28 03:39:39,324 INFO L226 Difference]: Without dead ends: 11965 [2024-11-28 03:39:39,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:39:39,381 INFO L435 NwaCegarLoop]: 301 mSDtfsCounter, 5462 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 3775 mSolverCounterSat, 1403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5575 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 5178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1403 IncrementalHoareTripleChecker+Valid, 3775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:39,381 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5575 Valid, 1186 Invalid, 5178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1403 Valid, 3775 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-28 03:39:39,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11965 states. [2024-11-28 03:39:39,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11965 to 10539. [2024-11-28 03:39:39,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10539 states, 8469 states have (on average 1.597355059629236) internal successors, (13528), 8657 states have internal predecessors, (13528), 1449 states have call successors, (1449), 611 states have call predecessors, (1449), 620 states have return successors, (2259), 1426 states have call predecessors, (2259), 1430 states have call successors, (2259) [2024-11-28 03:39:40,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10539 states to 10539 states and 17236 transitions. [2024-11-28 03:39:40,081 INFO L78 Accepts]: Start accepts. Automaton has 10539 states and 17236 transitions. Word has length 166 [2024-11-28 03:39:40,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:40,082 INFO L471 AbstractCegarLoop]: Abstraction has 10539 states and 17236 transitions. [2024-11-28 03:39:40,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 03:39:40,082 INFO L276 IsEmpty]: Start isEmpty. Operand 10539 states and 17236 transitions. [2024-11-28 03:39:40,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-28 03:39:40,085 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:40,085 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:39:40,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-28 03:39:40,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-28 03:39:40,286 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:40,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:40,287 INFO L85 PathProgramCache]: Analyzing trace with hash -644345306, now seen corresponding path program 1 times [2024-11-28 03:39:40,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:40,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264573109] [2024-11-28 03:39:40,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:40,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:40,703 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 03:39:40,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:40,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264573109] [2024-11-28 03:39:40,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264573109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:40,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285994624] [2024-11-28 03:39:40,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:40,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:40,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:40,706 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:40,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 03:39:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:41,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:39:41,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:41,430 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 03:39:41,430 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:39:41,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285994624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:41,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:39:41,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-28 03:39:41,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469714305] [2024-11-28 03:39:41,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:41,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:39:41,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:41,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:39:41,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:39:41,432 INFO L87 Difference]: Start difference. First operand 10539 states and 17236 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 03:39:46,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:46,652 INFO L93 Difference]: Finished difference Result 20957 states and 34457 transitions. [2024-11-28 03:39:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:39:46,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 167 [2024-11-28 03:39:46,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:46,723 INFO L225 Difference]: With dead ends: 20957 [2024-11-28 03:39:46,723 INFO L226 Difference]: Without dead ends: 11283 [2024-11-28 03:39:46,772 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:39:46,773 INFO L435 NwaCegarLoop]: 527 mSDtfsCounter, 2923 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 5747 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3044 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 6394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 5747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:46,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3044 Valid, 1924 Invalid, 6394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 5747 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-28 03:39:46,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11283 states. [2024-11-28 03:39:47,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11283 to 10527. [2024-11-28 03:39:47,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10527 states, 8457 states have (on average 1.5953647865673406) internal successors, (13492), 8645 states have internal predecessors, (13492), 1449 states have call successors, (1449), 611 states have call predecessors, (1449), 620 states have return successors, (2259), 1426 states have call predecessors, (2259), 1430 states have call successors, (2259) [2024-11-28 03:39:47,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10527 states to 10527 states and 17200 transitions. [2024-11-28 03:39:47,330 INFO L78 Accepts]: Start accepts. Automaton has 10527 states and 17200 transitions. Word has length 167 [2024-11-28 03:39:47,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:47,330 INFO L471 AbstractCegarLoop]: Abstraction has 10527 states and 17200 transitions. [2024-11-28 03:39:47,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 03:39:47,331 INFO L276 IsEmpty]: Start isEmpty. Operand 10527 states and 17200 transitions. [2024-11-28 03:39:47,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-28 03:39:47,333 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:47,333 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:39:47,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-28 03:39:47,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-28 03:39:47,537 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:47,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:47,538 INFO L85 PathProgramCache]: Analyzing trace with hash 563500752, now seen corresponding path program 1 times [2024-11-28 03:39:47,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:47,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403421712] [2024-11-28 03:39:47,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:47,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:47,819 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 03:39:47,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:47,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403421712] [2024-11-28 03:39:47,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403421712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:47,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357410664] [2024-11-28 03:39:47,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:47,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:47,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:47,821 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:47,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 03:39:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:48,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:39:48,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:48,242 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 03:39:48,243 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:39:48,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357410664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:48,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:39:48,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-28 03:39:48,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002732556] [2024-11-28 03:39:48,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:48,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:39:48,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:48,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:39:48,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:39:48,245 INFO L87 Difference]: Start difference. First operand 10527 states and 17200 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 03:39:48,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:48,785 INFO L93 Difference]: Finished difference Result 21129 states and 34919 transitions. [2024-11-28 03:39:48,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:39:48,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 169 [2024-11-28 03:39:48,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:48,863 INFO L225 Difference]: With dead ends: 21129 [2024-11-28 03:39:48,863 INFO L226 Difference]: Without dead ends: 10677 [2024-11-28 03:39:48,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:39:48,926 INFO L435 NwaCegarLoop]: 1009 mSDtfsCounter, 0 mSDsluCounter, 3010 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4019 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:48,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4019 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:39:48,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10677 states. [2024-11-28 03:39:49,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10677 to 10603. [2024-11-28 03:39:49,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10603 states, 8520 states have (on average 1.590962441314554) internal successors, (13555), 8696 states have internal predecessors, (13555), 1449 states have call successors, (1449), 611 states have call predecessors, (1449), 633 states have return successors, (2284), 1451 states have call predecessors, (2284), 1430 states have call successors, (2284) [2024-11-28 03:39:49,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10603 states to 10603 states and 17288 transitions. [2024-11-28 03:39:49,624 INFO L78 Accepts]: Start accepts. Automaton has 10603 states and 17288 transitions. Word has length 169 [2024-11-28 03:39:49,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:49,625 INFO L471 AbstractCegarLoop]: Abstraction has 10603 states and 17288 transitions. [2024-11-28 03:39:49,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 03:39:49,625 INFO L276 IsEmpty]: Start isEmpty. Operand 10603 states and 17288 transitions. [2024-11-28 03:39:49,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-28 03:39:49,628 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:49,629 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:39:49,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-28 03:39:49,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-28 03:39:49,829 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:49,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:49,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1946716336, now seen corresponding path program 1 times [2024-11-28 03:39:49,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:49,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238932155] [2024-11-28 03:39:49,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:49,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:50,048 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 03:39:50,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:50,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238932155] [2024-11-28 03:39:50,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238932155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:50,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716947921] [2024-11-28 03:39:50,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:50,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:50,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:50,050 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:50,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 03:39:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:50,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:39:50,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:50,701 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 03:39:50,701 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:39:51,075 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-28 03:39:51,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716947921] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:39:51,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:39:51,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 21 [2024-11-28 03:39:51,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406017945] [2024-11-28 03:39:51,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:39:51,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 03:39:51,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:51,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 03:39:51,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2024-11-28 03:39:51,078 INFO L87 Difference]: Start difference. First operand 10603 states and 17288 transitions. Second operand has 21 states, 21 states have (on average 13.428571428571429) internal successors, (282), 19 states have internal predecessors, (282), 9 states have call successors, (51), 8 states have call predecessors, (51), 10 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) [2024-11-28 03:40:22,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:22,275 INFO L93 Difference]: Finished difference Result 77950 states and 150331 transitions. [2024-11-28 03:40:22,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2024-11-28 03:40:22,276 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 13.428571428571429) internal successors, (282), 19 states have internal predecessors, (282), 9 states have call successors, (51), 8 states have call predecessors, (51), 10 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) Word has length 173 [2024-11-28 03:40:22,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:22,944 INFO L225 Difference]: With dead ends: 77950 [2024-11-28 03:40:22,944 INFO L226 Difference]: Without dead ends: 67370 [2024-11-28 03:40:23,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 389 SyntacticMatches, 2 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8818 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3487, Invalid=17105, Unknown=0, NotChecked=0, Total=20592 [2024-11-28 03:40:23,142 INFO L435 NwaCegarLoop]: 1177 mSDtfsCounter, 17431 mSDsluCounter, 9321 mSDsCounter, 0 mSdLazyCounter, 34742 mSolverCounterSat, 6466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17452 SdHoareTripleChecker+Valid, 10498 SdHoareTripleChecker+Invalid, 41208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 6466 IncrementalHoareTripleChecker+Valid, 34742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:23,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17452 Valid, 10498 Invalid, 41208 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [6466 Valid, 34742 Invalid, 0 Unknown, 0 Unchecked, 23.6s Time] [2024-11-28 03:40:23,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67370 states. [2024-11-28 03:40:26,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67370 to 49973. [2024-11-28 03:40:26,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49973 states, 39276 states have (on average 1.5719523373052247) internal successors, (61740), 40570 states have internal predecessors, (61740), 7456 states have call successors, (7456), 2699 states have call predecessors, (7456), 3240 states have return successors, (12464), 7602 states have call predecessors, (12464), 7416 states have call successors, (12464) [2024-11-28 03:40:27,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49973 states to 49973 states and 81660 transitions. [2024-11-28 03:40:27,345 INFO L78 Accepts]: Start accepts. Automaton has 49973 states and 81660 transitions. Word has length 173 [2024-11-28 03:40:27,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:27,345 INFO L471 AbstractCegarLoop]: Abstraction has 49973 states and 81660 transitions. [2024-11-28 03:40:27,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 13.428571428571429) internal successors, (282), 19 states have internal predecessors, (282), 9 states have call successors, (51), 8 states have call predecessors, (51), 10 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) [2024-11-28 03:40:27,346 INFO L276 IsEmpty]: Start isEmpty. Operand 49973 states and 81660 transitions. [2024-11-28 03:40:27,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-28 03:40:27,354 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:27,354 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:40:27,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-28 03:40:27,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-28 03:40:27,554 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:27,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:27,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1282697468, now seen corresponding path program 1 times [2024-11-28 03:40:27,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:27,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692022091] [2024-11-28 03:40:27,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:27,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:27,680 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-28 03:40:27,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:27,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692022091] [2024-11-28 03:40:27,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692022091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:27,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972207860] [2024-11-28 03:40:27,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:27,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:27,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:27,682 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:27,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-28 03:40:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:28,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:40:28,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:28,078 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-28 03:40:28,078 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:40:28,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972207860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:28,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:40:28,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-28 03:40:28,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750838663] [2024-11-28 03:40:28,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:28,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:40:28,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:28,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:40:28,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:40:28,081 INFO L87 Difference]: Start difference. First operand 49973 states and 81660 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 03:40:31,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:31,120 INFO L93 Difference]: Finished difference Result 98392 states and 160514 transitions. [2024-11-28 03:40:31,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:40:31,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 189 [2024-11-28 03:40:31,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:31,453 INFO L225 Difference]: With dead ends: 98392 [2024-11-28 03:40:31,453 INFO L226 Difference]: Without dead ends: 48844 [2024-11-28 03:40:31,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:40:31,738 INFO L435 NwaCegarLoop]: 998 mSDtfsCounter, 46 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 2933 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:31,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 2933 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:40:31,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48844 states. [2024-11-28 03:40:34,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48844 to 48844. [2024-11-28 03:40:34,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48844 states, 38290 states have (on average 1.5680856620527552) internal successors, (60042), 39582 states have internal predecessors, (60042), 7377 states have call successors, (7377), 2637 states have call predecessors, (7377), 3176 states have return successors, (12191), 7523 states have call predecessors, (12191), 7337 states have call successors, (12191) [2024-11-28 03:40:34,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48844 states to 48844 states and 79610 transitions. [2024-11-28 03:40:34,673 INFO L78 Accepts]: Start accepts. Automaton has 48844 states and 79610 transitions. Word has length 189 [2024-11-28 03:40:34,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:34,674 INFO L471 AbstractCegarLoop]: Abstraction has 48844 states and 79610 transitions. [2024-11-28 03:40:34,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 03:40:34,674 INFO L276 IsEmpty]: Start isEmpty. Operand 48844 states and 79610 transitions. [2024-11-28 03:40:34,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-28 03:40:34,676 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:34,676 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2024-11-28 03:40:34,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-28 03:40:34,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-28 03:40:34,877 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:34,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:34,877 INFO L85 PathProgramCache]: Analyzing trace with hash 567608911, now seen corresponding path program 1 times [2024-11-28 03:40:34,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:34,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172710931] [2024-11-28 03:40:34,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:34,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:35,110 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-28 03:40:35,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:35,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172710931] [2024-11-28 03:40:35,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172710931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:35,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511197502] [2024-11-28 03:40:35,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:35,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:35,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:35,114 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:35,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4ca4a-785b-4f36-8ca2-b826dba19b50/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 03:40:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:35,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:40:35,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:35,550 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-28 03:40:35,550 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:40:35,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511197502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:35,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:40:35,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-28 03:40:35,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422503927] [2024-11-28 03:40:35,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:35,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:40:35,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:35,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:40:35,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:40:35,552 INFO L87 Difference]: Start difference. First operand 48844 states and 79610 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19)