./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 04ae9a4eaad9b026cab167b9d875c53fcb305c3c3f2af8aa4a0b048c8b5ef4cb --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:57:34,405 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:57:34,503 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 21:57:34,508 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:57:34,509 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:57:34,574 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:57:34,575 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:57:34,576 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:57:34,576 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:57:34,577 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:57:34,577 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:57:34,577 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:57:34,578 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:57:34,578 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:57:34,580 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:57:34,581 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:57:34,582 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:57:34,583 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:57:34,583 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:57:34,584 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:57:34,584 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:57:34,584 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:57:34,585 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:57:34,585 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:57:34,586 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:57:34,586 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:57:34,586 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:57:34,587 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:57:34,587 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:57:34,588 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:57:34,588 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:57:34,588 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:57:34,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:57:34,589 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:57:34,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:57:34,590 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:57:34,590 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:57:34,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:57:34,591 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:57:34,591 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:57:34,592 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:57:34,592 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:57:34,593 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04ae9a4eaad9b026cab167b9d875c53fcb305c3c3f2af8aa4a0b048c8b5ef4cb [2024-10-31 21:57:34,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:57:34,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:57:34,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:57:34,940 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:57:34,941 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:57:34,942 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c Unable to find full path for "g++" [2024-10-31 21:57:37,033 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:57:37,373 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:57:37,373 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c [2024-10-31 21:57:37,395 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/data/ed41932f7/be2dbf139ede4b2a9d2b5c37cabd4a8a/FLAGcb0bf77d4 [2024-10-31 21:57:37,411 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/data/ed41932f7/be2dbf139ede4b2a9d2b5c37cabd4a8a [2024-10-31 21:57:37,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:57:37,417 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:57:37,419 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:57:37,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:57:37,425 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:57:37,426 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:57:37" (1/1) ... [2024-10-31 21:57:37,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@175e0f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:37, skipping insertion in model container [2024-10-31 21:57:37,427 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:57:37" (1/1) ... [2024-10-31 21:57:37,506 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:57:37,839 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c[11232,11245] [2024-10-31 21:57:38,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:57:38,297 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:57:38,309 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2024-10-31 21:57:38,311 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [414] [2024-10-31 21:57:38,311 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [423] [2024-10-31 21:57:38,311 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2054] [2024-10-31 21:57:38,312 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2148] [2024-10-31 21:57:38,313 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2164] [2024-10-31 21:57:38,313 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [2282] [2024-10-31 21:57:38,313 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2463] [2024-10-31 21:57:38,313 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2816] [2024-10-31 21:57:38,314 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3481] [2024-10-31 21:57:38,361 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c[11232,11245] [2024-10-31 21:57:38,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:57:38,570 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:57:38,571 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:38 WrapperNode [2024-10-31 21:57:38,571 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:57:38,572 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:57:38,572 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:57:38,572 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:57:38,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:38" (1/1) ... [2024-10-31 21:57:38,611 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:38" (1/1) ... [2024-10-31 21:57:38,686 INFO L138 Inliner]: procedures = 97, calls = 350, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 954 [2024-10-31 21:57:38,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:57:38,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:57:38,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:57:38,688 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:57:38,704 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:38" (1/1) ... [2024-10-31 21:57:38,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:38" (1/1) ... [2024-10-31 21:57:38,714 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:38" (1/1) ... [2024-10-31 21:57:38,765 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]. [2024-10-31 21:57:38,765 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:38" (1/1) ... [2024-10-31 21:57:38,766 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:38" (1/1) ... [2024-10-31 21:57:38,814 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:38" (1/1) ... [2024-10-31 21:57:38,844 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:38" (1/1) ... [2024-10-31 21:57:38,851 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:38" (1/1) ... [2024-10-31 21:57:38,864 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:38" (1/1) ... [2024-10-31 21:57:38,886 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:57:38,888 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:57:38,888 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:57:38,888 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:57:38,889 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:38" (1/1) ... [2024-10-31 21:57:38,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:57:38,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:57:39,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:57:39,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:57:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-10-31 21:57:39,079 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-10-31 21:57:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-10-31 21:57:39,080 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-10-31 21:57:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-10-31 21:57:39,080 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-10-31 21:57:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-10-31 21:57:39,081 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-10-31 21:57:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-10-31 21:57:39,082 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-10-31 21:57:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-10-31 21:57:39,083 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-10-31 21:57:39,083 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-10-31 21:57:39,083 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-10-31 21:57:39,083 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-10-31 21:57:39,084 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-10-31 21:57:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-10-31 21:57:39,084 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-10-31 21:57:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-10-31 21:57:39,087 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-10-31 21:57:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-10-31 21:57:39,087 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-10-31 21:57:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-10-31 21:57:39,088 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-10-31 21:57:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:57:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-10-31 21:57:39,088 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-10-31 21:57:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-10-31 21:57:39,088 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-10-31 21:57:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-10-31 21:57:39,089 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-10-31 21:57:39,089 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-10-31 21:57:39,089 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-10-31 21:57:39,089 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-10-31 21:57:39,089 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-10-31 21:57:39,089 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-10-31 21:57:39,089 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-10-31 21:57:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-10-31 21:57:39,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-10-31 21:57:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-10-31 21:57:39,090 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-10-31 21:57:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-10-31 21:57:39,090 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-10-31 21:57:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-10-31 21:57:39,092 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-10-31 21:57:39,093 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-10-31 21:57:39,093 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-10-31 21:57:39,093 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-10-31 21:57:39,094 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-10-31 21:57:39,094 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-10-31 21:57:39,095 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-10-31 21:57:39,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:57:39,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 21:57:39,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 21:57:39,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 21:57:39,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-31 21:57:39,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-31 21:57:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-31 21:57:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-31 21:57:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-31 21:57:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-31 21:57:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-31 21:57:39,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-31 21:57:39,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-10-31 21:57:39,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-10-31 21:57:39,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-10-31 21:57:39,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-10-31 21:57:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-10-31 21:57:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-10-31 21:57:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-10-31 21:57:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-10-31 21:57:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-10-31 21:57:39,102 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-10-31 21:57:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:57:39,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:57:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-10-31 21:57:39,103 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-10-31 21:57:39,395 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:57:39,400 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:57:40,940 INFO L? ?]: Removed 483 outVars from TransFormulas that were not future-live. [2024-10-31 21:57:40,940 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:57:40,974 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:57:40,974 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 21:57:40,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:57:40 BoogieIcfgContainer [2024-10-31 21:57:40,975 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:57:40,977 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:57:40,977 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:57:40,983 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:57:40,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:57:37" (1/3) ... [2024-10-31 21:57:40,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a0582e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:57:40, skipping insertion in model container [2024-10-31 21:57:40,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:38" (2/3) ... [2024-10-31 21:57:40,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a0582e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:57:40, skipping insertion in model container [2024-10-31 21:57:40,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:57:40" (3/3) ... [2024-10-31 21:57:40,987 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product31.cil.c [2024-10-31 21:57:41,006 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:57:41,006 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 21:57:41,114 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:57:41,126 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;@31ba10b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:57:41,126 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 21:57:41,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 603 states, 469 states have (on average 1.67590618336887) internal successors, (786), 490 states have internal predecessors, (786), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 99 states have call predecessors, (105), 105 states have call successors, (105) [2024-10-31 21:57:41,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-10-31 21:57:41,185 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:41,186 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-10-31 21:57:41,186 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:41,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:41,192 INFO L85 PathProgramCache]: Analyzing trace with hash 953168523, now seen corresponding path program 1 times [2024-10-31 21:57:41,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:41,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493024157] [2024-10-31 21:57:41,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:41,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:42,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 21:57:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:42,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:42,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-31 21:57:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:42,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-31 21:57:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:42,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:42,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-31 21:57:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:42,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-31 21:57:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:43,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:43,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:43,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:43,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:57:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:43,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-31 21:57:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:43,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:43,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:43,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:57:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:43,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-31 21:57:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:43,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-31 21:57:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:43,100 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-31 21:57:43,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:43,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493024157] [2024-10-31 21:57:43,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493024157] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:57:43,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183959454] [2024-10-31 21:57:43,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:43,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:43,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:57:43,106 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:57:43,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 21:57:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:43,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 1855 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-31 21:57:43,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:57:43,660 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-31 21:57:43,660 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:57:43,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183959454] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:43,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:57:43,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2024-10-31 21:57:43,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436113228] [2024-10-31 21:57:43,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:43,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 21:57:43,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:43,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 21:57:43,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:57:43,707 INFO L87 Difference]: Start difference. First operand has 603 states, 469 states have (on average 1.67590618336887) internal successors, (786), 490 states have internal predecessors, (786), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 99 states have call predecessors, (105), 105 states have call successors, (105) Second operand has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-31 21:57:43,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:57:43,835 INFO L93 Difference]: Finished difference Result 624 states and 1026 transitions. [2024-10-31 21:57:43,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 21:57:43,838 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2024-10-31 21:57:43,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:57:43,878 INFO L225 Difference]: With dead ends: 624 [2024-10-31 21:57:43,878 INFO L226 Difference]: Without dead ends: 595 [2024-10-31 21:57:43,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:57:43,890 INFO L432 NwaCegarLoop]: 987 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:57:43,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 21:57:43,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2024-10-31 21:57:43,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2024-10-31 21:57:43,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 463 states have (on average 1.673866090712743) internal successors, (775), 482 states have internal predecessors, (775), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-10-31 21:57:43,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 980 transitions. [2024-10-31 21:57:44,003 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 980 transitions. Word has length 127 [2024-10-31 21:57:44,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:57:44,006 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 980 transitions. [2024-10-31 21:57:44,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-31 21:57:44,008 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 980 transitions. [2024-10-31 21:57:44,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-10-31 21:57:44,020 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:44,020 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-10-31 21:57:44,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 21:57:44,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-10-31 21:57:44,226 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:44,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:44,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1919451231, now seen corresponding path program 1 times [2024-10-31 21:57:44,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:44,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114892234] [2024-10-31 21:57:44,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:44,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:44,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 21:57:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:44,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:44,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-31 21:57:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:44,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-31 21:57:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:44,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:44,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-31 21:57:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:45,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-31 21:57:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:45,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:45,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:45,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:45,382 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:57:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:45,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-31 21:57:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:45,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:45,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:45,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:57:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:45,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-31 21:57:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:45,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-31 21:57:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:45,430 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-31 21:57:45,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:45,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114892234] [2024-10-31 21:57:45,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114892234] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:57:45,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045338295] [2024-10-31 21:57:45,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:45,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:45,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:57:45,434 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:57:45,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 21:57:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:45,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 21:57:45,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:57:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-31 21:57:46,046 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:57:46,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045338295] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:46,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:57:46,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-10-31 21:57:46,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257156273] [2024-10-31 21:57:46,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:46,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:57:46,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:46,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:57:46,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:57:46,050 INFO L87 Difference]: Start difference. First operand 595 states and 980 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-31 21:57:46,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:57:46,162 INFO L93 Difference]: Finished difference Result 1181 states and 1952 transitions. [2024-10-31 21:57:46,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:57:46,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 129 [2024-10-31 21:57:46,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:57:46,175 INFO L225 Difference]: With dead ends: 1181 [2024-10-31 21:57:46,175 INFO L226 Difference]: Without dead ends: 595 [2024-10-31 21:57:46,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:57:46,185 INFO L432 NwaCegarLoop]: 968 mSDtfsCounter, 5 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:57:46,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2898 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 21:57:46,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2024-10-31 21:57:46,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2024-10-31 21:57:46,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 463 states have (on average 1.6717062634989202) internal successors, (774), 482 states have internal predecessors, (774), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-10-31 21:57:46,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 979 transitions. [2024-10-31 21:57:46,231 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 979 transitions. Word has length 129 [2024-10-31 21:57:46,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:57:46,232 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 979 transitions. [2024-10-31 21:57:46,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-31 21:57:46,232 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 979 transitions. [2024-10-31 21:57:46,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-31 21:57:46,238 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:46,238 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-10-31 21:57:46,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 21:57:46,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:46,443 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:46,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:46,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1051469961, now seen corresponding path program 1 times [2024-10-31 21:57:46,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:46,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812680006] [2024-10-31 21:57:46,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:46,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 21:57:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 21:57:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 21:57:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 21:57:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-31 21:57:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:57:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-31 21:57:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:57:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-31 21:57:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,748 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-31 21:57:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,758 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-31 21:57:47,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:47,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812680006] [2024-10-31 21:57:47,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812680006] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:57:47,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881471504] [2024-10-31 21:57:47,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:47,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:47,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:57:47,764 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:57:47,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 21:57:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:48,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 21:57:48,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:57:48,385 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-31 21:57:48,385 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:57:48,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881471504] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:48,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:57:48,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-10-31 21:57:48,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871445487] [2024-10-31 21:57:48,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:48,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:57:48,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:48,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:57:48,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:57:48,389 INFO L87 Difference]: Start difference. First operand 595 states and 979 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-31 21:57:48,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:57:48,504 INFO L93 Difference]: Finished difference Result 1181 states and 1950 transitions. [2024-10-31 21:57:48,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:57:48,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2024-10-31 21:57:48,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:57:48,514 INFO L225 Difference]: With dead ends: 1181 [2024-10-31 21:57:48,514 INFO L226 Difference]: Without dead ends: 595 [2024-10-31 21:57:48,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:57:48,520 INFO L432 NwaCegarLoop]: 968 mSDtfsCounter, 4 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:57:48,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2898 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 21:57:48,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2024-10-31 21:57:48,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2024-10-31 21:57:48,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 463 states have (on average 1.6695464362850971) internal successors, (773), 482 states have internal predecessors, (773), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-10-31 21:57:48,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 978 transitions. [2024-10-31 21:57:48,552 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 978 transitions. Word has length 131 [2024-10-31 21:57:48,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:57:48,553 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 978 transitions. [2024-10-31 21:57:48,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-31 21:57:48,553 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 978 transitions. [2024-10-31 21:57:48,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-10-31 21:57:48,559 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:48,559 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-10-31 21:57:48,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 21:57:48,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:48,761 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:48,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:48,761 INFO L85 PathProgramCache]: Analyzing trace with hash 957772319, now seen corresponding path program 1 times [2024-10-31 21:57:48,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:48,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738772746] [2024-10-31 21:57:48,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:48,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:49,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 21:57:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:49,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:49,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:57:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:49,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-31 21:57:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:49,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:49,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:57:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:49,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-31 21:57:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:49,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:49,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:49,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:49,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:57:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:49,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-31 21:57:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:49,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:50,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:50,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:57:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:50,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-31 21:57:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:50,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-31 21:57:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:50,023 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-31 21:57:50,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:50,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738772746] [2024-10-31 21:57:50,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738772746] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:57:50,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540875910] [2024-10-31 21:57:50,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:50,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:50,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:57:50,027 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:57:50,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 21:57:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:50,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 21:57:50,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:57:50,523 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-31 21:57:50,523 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:57:50,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540875910] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:50,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:57:50,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-10-31 21:57:50,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566973912] [2024-10-31 21:57:50,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:50,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:57:50,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:50,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:57:50,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:57:50,526 INFO L87 Difference]: Start difference. First operand 595 states and 978 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-31 21:57:50,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:57:50,632 INFO L93 Difference]: Finished difference Result 1188 states and 1957 transitions. [2024-10-31 21:57:50,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:57:50,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2024-10-31 21:57:50,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:57:50,639 INFO L225 Difference]: With dead ends: 1188 [2024-10-31 21:57:50,639 INFO L226 Difference]: Without dead ends: 604 [2024-10-31 21:57:50,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:57:50,643 INFO L432 NwaCegarLoop]: 967 mSDtfsCounter, 13 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:57:50,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2895 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 21:57:50,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2024-10-31 21:57:50,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2024-10-31 21:57:50,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 471 states have (on average 1.6666666666666667) internal successors, (785), 490 states have internal predecessors, (785), 105 states have call successors, (105), 28 states have call predecessors, (105), 27 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-10-31 21:57:50,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 990 transitions. [2024-10-31 21:57:50,681 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 990 transitions. Word has length 133 [2024-10-31 21:57:50,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:57:50,682 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 990 transitions. [2024-10-31 21:57:50,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-31 21:57:50,682 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 990 transitions. [2024-10-31 21:57:50,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-10-31 21:57:50,687 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:50,688 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-10-31 21:57:50,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-31 21:57:50,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:50,892 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:50,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:50,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1893294337, now seen corresponding path program 1 times [2024-10-31 21:57:50,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:50,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443054611] [2024-10-31 21:57:50,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:50,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:51,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 21:57:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:51,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:51,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 21:57:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:51,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 21:57:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:51,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:51,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:57:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:51,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-31 21:57:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:51,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:51,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:51,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:51,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:57:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:51,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-31 21:57:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:51,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:51,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:51,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:57:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:51,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-31 21:57:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:51,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-31 21:57:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:51,883 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-31 21:57:51,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:51,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443054611] [2024-10-31 21:57:51,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443054611] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:57:51,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412869871] [2024-10-31 21:57:51,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:51,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:51,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:57:51,887 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:57:51,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 21:57:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:52,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 21:57:52,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:57:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-31 21:57:52,410 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:57:52,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412869871] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:52,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:57:52,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-10-31 21:57:52,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994743669] [2024-10-31 21:57:52,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:52,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:57:52,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:52,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:57:52,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:57:52,415 INFO L87 Difference]: Start difference. First operand 604 states and 990 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-31 21:57:52,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:57:52,506 INFO L93 Difference]: Finished difference Result 1190 states and 1958 transitions. [2024-10-31 21:57:52,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:57:52,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2024-10-31 21:57:52,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:57:52,513 INFO L225 Difference]: With dead ends: 1190 [2024-10-31 21:57:52,514 INFO L226 Difference]: Without dead ends: 604 [2024-10-31 21:57:52,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:57:52,518 INFO L432 NwaCegarLoop]: 967 mSDtfsCounter, 11 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:57:52,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2895 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 21:57:52,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2024-10-31 21:57:52,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2024-10-31 21:57:52,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 471 states have (on average 1.664543524416136) internal successors, (784), 490 states have internal predecessors, (784), 105 states have call successors, (105), 28 states have call predecessors, (105), 27 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-10-31 21:57:52,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 989 transitions. [2024-10-31 21:57:52,548 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 989 transitions. Word has length 134 [2024-10-31 21:57:52,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:57:52,548 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 989 transitions. [2024-10-31 21:57:52,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-31 21:57:52,548 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 989 transitions. [2024-10-31 21:57:52,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-10-31 21:57:52,553 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:52,553 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-10-31 21:57:52,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 21:57:52,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:52,754 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:52,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:52,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1648575267, now seen corresponding path program 1 times [2024-10-31 21:57:52,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:52,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553413719] [2024-10-31 21:57:52,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:52,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:53,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 21:57:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:53,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:53,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-31 21:57:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:53,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-31 21:57:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:53,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:53,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:57:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:53,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-31 21:57:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:53,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:53,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:53,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:53,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:57:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:53,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-31 21:57:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:53,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:53,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:53,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:57:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:53,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-31 21:57:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:53,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-31 21:57:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:53,657 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-31 21:57:53,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:53,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553413719] [2024-10-31 21:57:53,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553413719] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:57:53,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760095276] [2024-10-31 21:57:53,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:53,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:53,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:57:53,660 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:57:53,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 21:57:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:54,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 21:57:54,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:57:54,122 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-31 21:57:54,122 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:57:54,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760095276] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:54,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:57:54,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-10-31 21:57:54,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213176731] [2024-10-31 21:57:54,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:54,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:57:54,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:54,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:57:54,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:57:54,125 INFO L87 Difference]: Start difference. First operand 604 states and 989 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-31 21:57:54,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:57:54,212 INFO L93 Difference]: Finished difference Result 1190 states and 1957 transitions. [2024-10-31 21:57:54,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:57:54,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 135 [2024-10-31 21:57:54,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:57:54,219 INFO L225 Difference]: With dead ends: 1190 [2024-10-31 21:57:54,219 INFO L226 Difference]: Without dead ends: 604 [2024-10-31 21:57:54,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:57:54,223 INFO L432 NwaCegarLoop]: 967 mSDtfsCounter, 10 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:57:54,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2895 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 21:57:54,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2024-10-31 21:57:54,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2024-10-31 21:57:54,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 471 states have (on average 1.6624203821656052) internal successors, (783), 490 states have internal predecessors, (783), 105 states have call successors, (105), 28 states have call predecessors, (105), 27 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-10-31 21:57:54,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 988 transitions. [2024-10-31 21:57:54,253 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 988 transitions. Word has length 135 [2024-10-31 21:57:54,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:57:54,253 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 988 transitions. [2024-10-31 21:57:54,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-31 21:57:54,254 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 988 transitions. [2024-10-31 21:57:54,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-10-31 21:57:54,259 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:54,259 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-10-31 21:57:54,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-31 21:57:54,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:54,461 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:54,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:54,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1508006019, now seen corresponding path program 1 times [2024-10-31 21:57:54,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:54,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811705943] [2024-10-31 21:57:54,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:54,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:54,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 21:57:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:55,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:55,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:57:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:55,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-31 21:57:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:55,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:55,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:57:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:55,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-31 21:57:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:55,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:55,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:55,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:55,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:57:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:55,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-31 21:57:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:55,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:55,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:55,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:57:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:55,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-31 21:57:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:55,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-31 21:57:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:55,608 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-31 21:57:55,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:55,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811705943] [2024-10-31 21:57:55,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811705943] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:57:55,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304707566] [2024-10-31 21:57:55,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:55,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:55,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:57:55,611 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:57:55,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-31 21:57:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:56,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 21:57:56,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:57:56,124 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-31 21:57:56,124 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:57:56,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304707566] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:56,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:57:56,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2024-10-31 21:57:56,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905758552] [2024-10-31 21:57:56,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:56,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:57:56,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:56,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:57:56,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-10-31 21:57:56,127 INFO L87 Difference]: Start difference. First operand 604 states and 988 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-31 21:57:56,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:57:56,317 INFO L93 Difference]: Finished difference Result 1216 states and 2004 transitions. [2024-10-31 21:57:56,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:57:56,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 136 [2024-10-31 21:57:56,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:57:56,324 INFO L225 Difference]: With dead ends: 1216 [2024-10-31 21:57:56,324 INFO L226 Difference]: Without dead ends: 619 [2024-10-31 21:57:56,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-10-31 21:57:56,328 INFO L432 NwaCegarLoop]: 942 mSDtfsCounter, 76 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 21:57:56,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2786 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 21:57:56,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2024-10-31 21:57:56,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 604. [2024-10-31 21:57:56,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 471 states have (on average 1.6518046709129512) internal successors, (778), 490 states have internal predecessors, (778), 105 states have call successors, (105), 28 states have call predecessors, (105), 27 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-10-31 21:57:56,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 983 transitions. [2024-10-31 21:57:56,354 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 983 transitions. Word has length 136 [2024-10-31 21:57:56,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:57:56,354 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 983 transitions. [2024-10-31 21:57:56,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-31 21:57:56,355 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 983 transitions. [2024-10-31 21:57:56,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-10-31 21:57:56,359 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:56,360 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-10-31 21:57:56,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-31 21:57:56,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-31 21:57:56,560 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:56,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:56,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1186299491, now seen corresponding path program 1 times [2024-10-31 21:57:56,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:56,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174285522] [2024-10-31 21:57:56,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:56,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:57,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 21:57:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:57,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:57,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:57:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:57,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-31 21:57:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:57,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:57,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:57:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:57,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-31 21:57:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:57,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:57,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:57,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:57,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:57:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:57,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-31 21:57:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:57,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:57,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:57,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:57:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:57,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-31 21:57:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:57,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-31 21:57:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:57,746 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-31 21:57:57,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:57,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174285522] [2024-10-31 21:57:57,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174285522] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:57:57,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004927332] [2024-10-31 21:57:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:57,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:57,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:57:57,751 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:57:57,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-31 21:57:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:58,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 21:57:58,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:57:58,242 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-31 21:57:58,242 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:57:58,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004927332] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:58,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:57:58,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2024-10-31 21:57:58,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337812304] [2024-10-31 21:57:58,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:58,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:57:58,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:58,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:57:58,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-10-31 21:57:58,269 INFO L87 Difference]: Start difference. First operand 604 states and 983 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-31 21:57:58,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:57:58,469 INFO L93 Difference]: Finished difference Result 1216 states and 1994 transitions. [2024-10-31 21:57:58,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:57:58,470 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 138 [2024-10-31 21:57:58,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:57:58,476 INFO L225 Difference]: With dead ends: 1216 [2024-10-31 21:57:58,476 INFO L226 Difference]: Without dead ends: 619 [2024-10-31 21:57:58,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-10-31 21:57:58,480 INFO L432 NwaCegarLoop]: 942 mSDtfsCounter, 75 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 21:57:58,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2786 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 21:57:58,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2024-10-31 21:57:58,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 604. [2024-10-31 21:57:58,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 471 states have (on average 1.6411889596602973) internal successors, (773), 490 states have internal predecessors, (773), 105 states have call successors, (105), 28 states have call predecessors, (105), 27 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-10-31 21:57:58,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 978 transitions. [2024-10-31 21:57:58,505 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 978 transitions. Word has length 138 [2024-10-31 21:57:58,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:57:58,506 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 978 transitions. [2024-10-31 21:57:58,506 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-31 21:57:58,506 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 978 transitions. [2024-10-31 21:57:58,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-10-31 21:57:58,510 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:58,511 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:58,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-31 21:57:58,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-31 21:57:58,714 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:58,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:58,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1781935453, now seen corresponding path program 1 times [2024-10-31 21:57:58,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:58,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378531891] [2024-10-31 21:57:58,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:58,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:59,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 21:57:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:59,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:59,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:57:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:59,382 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 21:57:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:59,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:59,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:57:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:59,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-31 21:57:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:59,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:59,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:59,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:59,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:57:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:59,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-31 21:57:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:59,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:59,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:59,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:57:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:59,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-31 21:57:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:59,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-31 21:57:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-31 21:57:59,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:59,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378531891] [2024-10-31 21:57:59,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378531891] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:57:59,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100866641] [2024-10-31 21:57:59,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:59,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:59,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:57:59,869 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:57:59,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-31 21:58:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:00,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 21:58:00,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:00,368 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-31 21:58:00,368 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:58:00,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100866641] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:00,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:58:00,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-10-31 21:58:00,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669266625] [2024-10-31 21:58:00,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:00,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:58:00,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:00,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:58:00,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-10-31 21:58:00,371 INFO L87 Difference]: Start difference. First operand 604 states and 978 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-31 21:58:00,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:58:00,603 INFO L93 Difference]: Finished difference Result 1267 states and 2067 transitions. [2024-10-31 21:58:00,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:58:00,604 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 140 [2024-10-31 21:58:00,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:58:00,609 INFO L225 Difference]: With dead ends: 1267 [2024-10-31 21:58:00,610 INFO L226 Difference]: Without dead ends: 685 [2024-10-31 21:58:00,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-10-31 21:58:00,613 INFO L432 NwaCegarLoop]: 975 mSDtfsCounter, 130 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2817 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 21:58:00,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2817 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 21:58:00,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2024-10-31 21:58:00,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 655. [2024-10-31 21:58:00,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 521 states have (on average 1.6468330134357005) internal successors, (858), 540 states have internal predecessors, (858), 105 states have call successors, (105), 29 states have call predecessors, (105), 28 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-10-31 21:58:00,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1063 transitions. [2024-10-31 21:58:00,638 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1063 transitions. Word has length 140 [2024-10-31 21:58:00,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:58:00,638 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 1063 transitions. [2024-10-31 21:58:00,639 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-31 21:58:00,639 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1063 transitions. [2024-10-31 21:58:00,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-31 21:58:00,643 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:58:00,643 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-10-31 21:58:00,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:00,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:00,845 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:58:00,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:00,845 INFO L85 PathProgramCache]: Analyzing trace with hash -704308656, now seen corresponding path program 1 times [2024-10-31 21:58:00,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:00,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607701773] [2024-10-31 21:58:00,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:00,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:01,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 21:58:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:01,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:58:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:01,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:58:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:01,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 21:58:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:01,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:58:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:01,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:58:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:01,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-31 21:58:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:01,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:58:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:01,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:58:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:01,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:58:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:01,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:58:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:01,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-31 21:58:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:01,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:58:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:01,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:58:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:01,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:58:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:01,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-31 21:58:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:01,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-31 21:58:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-31 21:58:01,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:01,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607701773] [2024-10-31 21:58:01,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607701773] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:01,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763599758] [2024-10-31 21:58:01,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:01,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:01,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:01,905 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:01,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-31 21:58:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:02,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 21:58:02,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:02,412 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-31 21:58:02,413 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:58:02,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763599758] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:02,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:58:02,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-10-31 21:58:02,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894803021] [2024-10-31 21:58:02,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:02,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:58:02,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:02,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:58:02,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-10-31 21:58:02,417 INFO L87 Difference]: Start difference. First operand 655 states and 1063 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-31 21:58:02,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:58:02,658 INFO L93 Difference]: Finished difference Result 1282 states and 2091 transitions. [2024-10-31 21:58:02,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:58:02,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2024-10-31 21:58:02,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:58:02,665 INFO L225 Difference]: With dead ends: 1282 [2024-10-31 21:58:02,666 INFO L226 Difference]: Without dead ends: 685 [2024-10-31 21:58:02,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-10-31 21:58:02,669 INFO L432 NwaCegarLoop]: 974 mSDtfsCounter, 124 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 21:58:02,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2790 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 21:58:02,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2024-10-31 21:58:02,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 655. [2024-10-31 21:58:02,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 521 states have (on average 1.637236084452975) internal successors, (853), 540 states have internal predecessors, (853), 105 states have call successors, (105), 29 states have call predecessors, (105), 28 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-10-31 21:58:02,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1058 transitions. [2024-10-31 21:58:02,695 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1058 transitions. Word has length 141 [2024-10-31 21:58:02,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:58:02,696 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 1058 transitions. [2024-10-31 21:58:02,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-31 21:58:02,696 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1058 transitions. [2024-10-31 21:58:02,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-31 21:58:02,701 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:58:02,701 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:02,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:02,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-31 21:58:02,902 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:58:02,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:02,903 INFO L85 PathProgramCache]: Analyzing trace with hash 421752975, now seen corresponding path program 1 times [2024-10-31 21:58:02,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:02,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741748993] [2024-10-31 21:58:02,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:02,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:03,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 21:58:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:03,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:58:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:03,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:58:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:03,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 21:58:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:03,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:58:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:03,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:58:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:04,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-31 21:58:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:04,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:58:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:04,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:58:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:04,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:58:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:04,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:58:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:04,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-31 21:58:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:04,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:58:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:04,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:58:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:04,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:58:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:04,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-31 21:58:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:04,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-31 21:58:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:04,143 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-31 21:58:04,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:04,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741748993] [2024-10-31 21:58:04,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741748993] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:04,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523656866] [2024-10-31 21:58:04,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:04,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:04,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:04,146 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:04,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e23d798-d055-495e-9a85-a7229636e10a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-31 21:58:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:04,627 INFO L255 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 21:58:04,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:04,762 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-31 21:58:04,763 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:58:04,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523656866] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:04,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:58:04,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 21 [2024-10-31 21:58:04,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328717056] [2024-10-31 21:58:04,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:04,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 21:58:04,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:04,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 21:58:04,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2024-10-31 21:58:04,765 INFO L87 Difference]: Start difference. First operand 655 states and 1058 transitions. Second operand has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16)